NEET ha .n et Model Grand Test 2017 Instructions : This paper contains 180 objective questions; 90 from Biology, 45 from Physics and 45 from Chemistry 2. Each question caries 4 marks. Candidate will get 4 marks for a correct response. For each incorrect response 1 mark will be deducted from the total score 3. Maximum time is 3 hours and maximum marks is 720 4. To darken the appropriate circle of the correct option against each question use blue or black ball point pen only. Answer marked with pencil would not be evaluated. ra tib 1. up BIOLOGY : Column I A. Wheat 4. The given below figure shows a generalized life cycle of a fungus. The suitable terms for A, B, C, D and E are 2. Diptera w .e B. Mango Column II (Taxonomic category order) 1. Primata en (Common name) ad 1. Match the following and choose the correct combination from the options given 3. Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom 1) Monera 2) Protista 3) Fungi 4) Animalia C. Housefly 3. Sapindales D. Man 4. Poales w 1) A-1, B-2, C-4, D-3 2) A-4, B-3, C-2, D-1 3) A-2, B-4, C-1, D-3 4) A-3, B-4, C-2, D-1 A B C D E Fertilizat ion Spore Dikaryoti c phase Mitosis Dikaryot ic phase Fertilizat ion Amitosis 1) Meiosis Mitosis Spore 1) Meiosis is arrested 2) Fertiliza tion Meiosis 2) The two haploid cells do not fuse immediately 3) Dikaryo tic phase Fertiliza tion Myceliu m Meiosis Mitosis Mitosis Meisis w 2. A dikaryon is formed when 3) Cytoplasm does not fuse 4) None of the above Page 1 4) Spore 5. ‘Viroids’ differ from ‘viruses’ in being 9. In the diagram of lenticel identify the parts as A, B, C, D 1) Naked RNA molecules only 2) Naked DNA molecules only ha .n et 3) Naked DNA packaged with viral genome 4) Satellite RNA packaged with viral genome 6. Consider the following statements regarding the major pigments and stored food in the different groups of algae and select the correct options given below 2) A-phellem, B-complementary cells, Cphelloderm, D-periderm 3) A-complementary cells, B-phellogen, Cphelloderm, D-periderm ra B. In phaeophyceae, laminarin is the stored food and major pigments are chlorophylla and b 1) A-phellem, B-complementary cells, Cphellogen, D-phelloderm tib A. In chlorophyceae the stored food material is starch and the major pigments are chlorophyll-a and d 4) A-complementary cells, B-phellem, Cperiderm, D-phelloderm up C. In rhodophyceae, floridean starch is the stored food and the major pigments are chlorophyll-a, d and phycoerythrin 1) A is correct, but B and C are wrong ad 2) A and B are correct, but C is wrong 10. Trees near sea do not have annual rings because 1) Soil is sandy 3) A and C are correct, but B is wrong 2) There is climatic variation 4) C is correct, but A and B are wrong 3) There is no marked climatic variation w .e en 7. Cells of this tissue are living and show angular wall thickening. They also provide mechanical support. The tissue is 1) Xylem 2) Sclerenchyma 3) Collenchyma 4) Epidermis 8. Which of the following represents the floral characters of Liliaceae w 1) Six tepals, zygomorphic, six stamens, bilocular, ovary, axile placentation w 2) Tetramerous, actinomorphic, polyphyllous, unilocular ovary, axile placentation 3) Trimerous, actinomorphic, polyandrous, superior ovary, axile placentation 4) Bisexual, zygomorphic, gamophyllous, inferior ovary, marginal placentation Page 2 4) There is enough moisture in the atmosphere 11. Which one of the following pairs is not correctly matched Cristae The “Shelves” formed by the folding of the inner membrane of the mitochondrion 2) Plasmodes The membrane surrounding mata the vacuole in plants 3) Grana Membrane bound discs in chloroplasts that contain chlorophylls and carotenoids 4) Middle Layer between adjacent lamella cell wall in plants derived from cell plate A B Vmax Km Km Km C Vmax/2 Vmax/2 Ki Vmax ad A Km Vmax Vmax/2 Ki X [S] en B w w .e 14. ‘G0’ state of cells in eukaryotic cell cycle denotes 1) Check point before entering the next phase 2) Pausing in the middle of a cycle to cope with a temporary delay 3) Death of a cell 4) Exit of cells from cell cycle w 15. Observe the following figure Page 3 4) The water level is higher in side A than in side B 16. The given diagram illustrates a Potato plant forming new tubers. Which route would be taken by most of the food at this time 1) 6 → 5 → 4 → 1 2) 1 → 4 → 5 → 6 3) 6 → 5 → 2 → 3 4) 1 → 4 → 2 → 3 up C 1) 2) 3) 4) 3) The water level is higher in side B than in side A ra Y 2) No change is observed ha .n et 13. The given adjacent graph depicts the change in conc. Of substrate on enzyme activity. Identify A, B and C 1) First the level of water is high in tube A and then water level is decreased tib 12. Which one of the following biomolecules is correctly characterised 1) Lecithin – a phosphorylated glyceride found in cell membrane 2) Palmitic acid – an unsaturated fatty acid with 18 carbon atoms 3) Adenylic acid – adenosine with a glucose phosphate molecule 4) Alanine amino acid – Contains an amino group and an acidic group anywhere in the molecule After the system reaches equilibrium, Which of the following changes will have occrred 17. Which one of the following statements can best explain the term critical concentration of an essential element. 1) Essential element concentration below which plant growth is retarded 2) Essential element concentration below which plant growth becomes stunted 3) Essential element concentration below which plant remains in the vegetative phase 4) None of the above 18. The correct sequence of flow of electrons in the light reaction is 1 PSII, plastoquinone, cytochromes, PSI, ferredoxin 2) PSI, plastoquinone, cytochromes, PSII, ferredoxin 3) PSI, ferredoxin, PSII 4) PSI, plastoquinone, cytochromes, PSII, ferredoxin 20. The end product of oxidative phosphorylation is 1) NADH 2) Oxygen 3) ADP 4) ATP + H2O 24. Geitonogamy involves 1) Fertilization of a flower by the pollen from a flower of another plant in the same population 2) Fertilization of a flower by the pollen from a flower of another plant belonging to a distant population 3) Fertilization of a flower by the pollen from another flower of the same plant 4) Fertilization of a flower by the pollen from the same flower up ra 21. Apical dominance in plant is caused by 1) High concentration of auxins in the terminal bud 2) High concentration of gibberellins in the apical bud 3) Low concentration of auxins in the lateral bud 4) Absence of auxins and gibberellins in the apical bud 23. Which of the following statements is not correct 1) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style 2) Insects that consume pollen or nectar without bringing about pollination are called pollen/nectar robbers 3) Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil 4) Some reptiles have also been reported as pollinators in some plant species ha .n et Photolysis of each water molecule in light reaction will yield 1) 2 electrons and 4 protons 2) 4 electrons and 4 protons 3) 4 electrons and 3 protons 4) 2 electrons and 2 protons tib 19. w .e en ad 22. See the following experiment and observe the result w Now identify plants (P-I, II and III) w 1) P-I = Long day plant; P-II = Long day plant; P-III = Day neutral plant 2) P-I = Short day plant; P-II = Short day plant; P-III = Day neutral plant 3) P-I = Short day plant; P-II = Long day plant; P-III = Day neutral plant 4) P-I = Long day plant; P-II = Short day plant; P-III = Day neutral plant Page 4 25. Read the following statements and choose the correct option A. Nitrogenous base is linked to the pentose sugar through a N-glycosidic linkage B. Phosphate group is linked to 5’- OH of a nucleoside through phosphoester linkage C. Two nucleosides are linked through 3’-5’ N-glycosidic linkage D. Negatively charged DNA is wrapped around positively charged histone octamer to form nucleosome E. The chromatin that is more densely packed and stains dark is called euchromatin 1) A, B and C alone are wrong 2) D alone is wrong 3) C and E alone are wrong 4) A, B and D alone are wrong 29. Refer the given flowchart of sewage treatment, accordingly match Column I with Column II and select the correct answer from the codes given below ha .n et 26 Which of the given statements is correct in the context of visualizing DNA molecules separated by agarose gel electrophoresis 1) DNA can be seen in visible light 2) DNA can be seen without staining in visible light 3) Ethidium bromide stained DNA can be seen in visible light 4) Ethidium bromide stained DNA can be seen under exposure to UV light 27. Given below are a few statements regarding somatic hybridization. Choose the correct statements A. The stage in which physical treatment of sewage is done B. The stage in which biological treatment of sewage is done C. Name of the sediment in primary treatment D. It is carried to aeration tanks from primary settling E. Name of the sediment in secondary treatment F. Site of flocs growth G. Function of sludge digester ra ii. Protoplasts from cells of different species can be fused Column I tib i. Protoplasts of different cells of the same plant are fused up iii. Treatment of cells with cellulase and pectinase is mandatory iv. The hybrid protoplast contains characters of only one parental protoplast 2) i and ii 3) i and iv 4) ii and iii ad 1) i and iii en 28. Match the microbes in column I with their commercial/industrial products in column II and choose the correct answer Column I Column II 1. Ethanol w .e A. Aspergillus niger w w B. Clostridium 2. butylicum C. Saccharomyces 3. cerevisiae D. Trichoderma 4. polysporum E. Monascus 5. purpureus 1) A-4, B-5, C-2, D-1, E-3 2) A-5, B-4, C-1, D-2, E-3 3) A-3, B-4, C-1, D-5, E-2 4) A-3, B-4, C-5, D-1, E-2 Page 5 Statins Citric acid Butyric acid Cyclosporin A Column II i. ii. Anaerobic digestion of activated sludge and production of biogas Activated sludge iii. Aeration tanks iv. Primary effluent v. Primary sludge vi. Secondary treatment Primary treatment vii. 1) A-vii, B-vi, C-v, D-iv, E-ii, F-iii, G-i 2) A-i, B-iii, C-v, D-vii, E-ii, F-iv, G-vi 3) A-i, B-ii, C-iii, D-iv, E-v, F-vi, G-vii 4) A-vii, B-vi, C-i, D-ii, E-iii, F-iv, G-v 31. Which of the following is not a feature of the plasmids 1) Independent replication 2) Circular structure 3) Transferable 4) Single – stranded → Malic OAA + NADPH + H + Dehydrogenase acid + NADP + 3) Malic → Pyruvic Malic acid + NADPH 2 enzyme acid + CO2 + NADP + 4) Both 1 and 2 36. Bacterial structure respectively: 1) Simple, Simple 3) Simple, Complex and behaviour are 2) Complex, Simple 4) Complex, Complex 37. In pea plant, genotype (Bb) shows 1) Round seed with large sized starch grain 2) Round seed with intermediate sized starch grain 3) Round seed with small sized starch grain 4) Wrinkled seed with small sized starch grain en ad up ra 32. What is true about Bt toxin 1) The inactive protoxin gets converted into active form due to alkaline ph of the insect gut 2) Bt protein exists as active toxin in the Bacillus 3) The activated toxin enters the ovaries of the pest to sterilize it and thus prevent its multiplication 4) The concerned Bacillus has antitoxins 2) ha .n et 1) Exonuclease enzyme removes nucleotides from site within DNA 2) Endonuclease enzyme removes nucleotides from the ends of DNA 3) Endocuclease enzyme cut long palyndromic DNA strand 4) Exonuclease enzyme removes nucleotides from ends of DNA 35. Which of the following equation holds true for acidification reactions of CAM pathway ? 1) PEP + CO2 + H 2O → OAA + H 2 PO4 PEP case tib 30. Which of the following option is correct for recombinant DNA technology w .e 33. When peacock eats snakes which eat insects thriving on green plants, the peacock is 1) A primary consumer 2) A primary decomposer 3) Final decomposer 4) The apex of food pyramid w w 34. Which one of the following regarding ecological pyramid is not correct 1) In most ecosystems, the pyramid of numbers and biomass are upright 2) In tree-dominated ecosystem the pyramid of numbers is inverted 3) The pyramid of energy expresses mainly the rate of food production 4) In deep water ecosystem, the pyramid of biomass is upright Page 6 38. In plant cells during cytokinesis wall formation :1) Starts at periphery of the cell and grows inward 2) Starts at centre of the cell and grows inward 3) Starts at centre of the cell and grows outward 4) Starts at periphery of the cell and grows outward 39. The life cycle in Bryophyta is haplo – diplontic type, it means that 1) Haploid generation is multicellular and diploid generation is single celled 2) Haploid generation is dominant and multicellular, diploid generation is also multicellular but comparatively less developed. 3) Haploid and diploid generations are equally developed. 4) Haploid generation is highly reduced. 40. Tap roots of carrot, turnip and adventitious roots of sweet potato become swollen for :1) Support 2) Respiration 3) Storage 4) Nitrogen fixation 44. Enzymes, which catalyse joining of C – O, C – S, C – N, P – O etc. Bonds, are included in which of the following classes ? 1) Oxidoreductases 2) Ligases 3) Isomerases 4) Lyases en ad up ra tib ha .n et 41. Identify the correct match from the column, I, 45. Double fertilization is the fusion of :II and III and select the correct option. 1) Two eggs ColumnColumnColumn-I 2) Two eggs and polar nuclei with pollen II III nuclei A Catkin i Modified a Neem 3) One male gamete with egg and other with calyx synergid B Pinnately ii Additional b Mulberry 4) One male gamete with egg and other with compound support secondary nucleus leaf 46. The term ‘Systematics’ is related to C Pappus iii Unisexual c Maize 1) Systematic arrangement of organisms flowers 2) It gives relationships among organisms D Stilt root iv Rachis d Sunflower 3) It gives evolutionary differences among 1) A – iii - b; B – iv – a; C – i - d; D – ii – c 2) A – i – b; B – ii – a; C – iii – d; D – iv – c animals only. 3) A – ii – a B – iii – b; C – iv – c; D – i – d 4) Both 1 and 2 4) A – iii – c; B – iv – d; C- i – b; D – ii – a 47. The given figure shows mouth parts of 42. In monocot stems, water canals are present cockroach .Identify the parts labeled as A to they are formed by :E and select the correct option 1) Disintegration of protoxylem elements 2) Fusion of metaxylem elements 3) The dissoulution of phloem parenchyma 4) Disintegration of rhytidome layers. 43. Fill up the blanks. w w w .e I. Ethanol is produced by ......A....... II. Large scale production of beverages in industries is done in very large vessels called .....B..... III. Pencillin is discovered by ......C...... IV. LAB checks disease causing microbes in ....D.....A to D in the above statements refers to 1) A-virus, B-fermentors, C-Alexander Fleming, D-intesine 2) A-yeast, B-Fermentors, C-Alexander Fleming, D-stomach 3) A- bacteria, B-fermentors, C-S Waksman, D-chest 4) A-bacteria,B-fermentors,C-S Waksman, D-liver Page 7 1) A–Labrum, B–Hypopharynx, C– Mandible, D– Labium, E– Maxilla 2) A– Labrum, B– Mandible, C– Hypopharynx,D– Maxilla,E– Labium 3) A– Hypopharynx, B–Labrum, C– Labium, D– Mandible, E– Maxilla 4) A– Maxilla, B– Mandible, C– Labium, D– Labrum, E– Hypopharynx 48. Which of the following is deviation from the rules of nomenclature 1) The names are generally in ‘Latin’ and written in italics. 2) Mangifera indica Linn. indicates Linnaeus first discovered mango tree 3) The first word, genus and the second component species epithet. 4) ICZN for animal nomenclature. 52. Match the name of the animal Column - I with Column – II and find out the incorrect? 49. Which one of the following figure shows pseudocoelomate condition? 53. The figures (A-D ) show four animals. Select the correct option with respect to a common characterstic of two of these animals Column - II 1 Limulus Living fossil arthropod 2 Adamsia Radially symmetrical ctenophore ha .n et Column - I 3 Petromyzon Ichthyophis Terrestrial Limbless amphibian 2) c 3) b 4) b& c ad 1) a up ra tib 4 Ectoparasitic cyclostome w .e en 50. Which of the following is incorrect combination 1) Mast cells - Heparin 2) Macrophages - Phagocytosis 3) Plasma cells - Antibodies 4) Adipocytes - Heat storage w 51. Which type of tissue correctly matches with its location? Tissue Location Cuboidal epithelium Lining of intestine 2 Areolar tissue Tendons 3 Skeletal muscle Diaphragm 4 Transitional epithelium Ear pinna w 1 Page 8 1) A and D respire mainly through body wall 2) B and C are aquatic marine 3) A and B have cnidoblasts for self-defence 4) C and D have haemocoel 54. All these members of the following class are with internal fertilization and oviparous 1) Prototherians 2) Reptilia 3) Vertebrata 4) Aves 55. Drowsiness after a heavy meal occurs due to 1) Increased blood pressure in the brain 2) Decreased pulse rate 3) Reduced blood pressure in the brain 4) Increased pulse rate 2) A-IV, B- III, C and D-I, E-III ad 3) A-II, B and C- III, D-I, E-IV up 1) A-IV, B and C- III, D-I, E-II 4) A-III, B and C- I, D-II, E-IV The graph shows the percentage saturation of haemoglobin with oxygen at different partial pressures of oxygen. Which range of partial pressure of oxygen produces the greatest change of percentage saturation of haemoglobin per unit oxygen tension? w w .e en 58. 60. Observe the abnormality in the given ECG ra 1) Statement-I & Statement-II are correct 2) Statement-I is correct & Statement-II is incorrect 3) Statement-I is incorrect but Statement-II is correct 4) Both Statement-I andStatement-II are incorrect 57. Match the following correctly – Respiratory Organs Animals A Earthworms I Lungs B Most aquatic II Trachea arthropods C Fishes III Gills D Birds/Reptiles IV Moist cuticle E Insects ha .n et Statement-II: Movement ofwater molecule requires energy 59. Which one of the following is matching pair? 1) Lubb – Sharp closure of AV valves at the beginning of ventricular systole 2) Dup – Sudden opening of semilunar valves at the beginning of ventricular diastole 3) Pulsation of the radial artery – Valves in the blood vessels 4) Initiation of the heartbeat – Purkinje fibres tib 56. Statement-I: At the time of absorption water moves into the cells by diffusion 1) Tachycardia 3) Arythmia 61. Match the following Excretory organ Page 9 Animal A Antennal glands 1 Pheretima B Protonephridia 2 Limulus C Nephridia 3 Palaeomon D Malpighian tubules 4 Amphioxus 5 Periplaneta w 1) A 2) Hyperkalemia 4) Myocardial infarction 2) B 3) C 4) D 1) 2) 3) 4) A 2 3 5 3 B 4 4 1 2 C 1 1 4 1 D 5 5 3 5 62. Human urine is usually acidic, because 1) Sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries 2) Excreted plasma proteins are acidic 65. Release of a neurotransmitter in a synapse results in the activation of ligand gated ionic channels, leading to the generation of IPSPs (Inhibitory post synaptic potentials) in the post synaptic neuron The neurotransmitter must be 1) Glycine or GABA 4) Sodium and potassium exchange generates acidity 3) Oxytocin or serotonin I) Actin is the contractile protein II) Myosin is the major constituent of thick filaments 4) Acetyl choline or glycine 66. Select the answer with correct matching of the structure, its location and function. Structure Location Function 1 Blind spot ra III) Tn I subunit of troponin has a binding site (active site) for myosin 2) Epinephrine or Norephiner phrine tib 63. Which of the following statements are true/false about the skeletal muscle proteins. ha .n et 3) Hydrogen ions are actively secreted into the filtrate ad 1) I, II are true & III, IV are false up IV)Actin and myosin,which generate force during contraction are called structural proteins 2) III, IV are true & I, II are false 3) All are true except III en 4) All are true except IV w w .e 64. Statement-I : Myasthenia gravis is an autoimmune disorder Statement-II : In myasthenia gravis, neuromuscular junctions are affected leading to fatigue, weakening & paralysis of smooth muscles w 1) Both statement-I & statement-II are true 2) Statement-I is true but statement-II is false 3) Both statement-I & statement -II both are false 4) Statement-I is false but statement-II is true. Page 10 2 Hippo campus 3 Macula Near the place where optic nerve leaves the eye Cerebellar cortex Recall memory otolith organ angular acceleration 4 Eustachai connects n tube middle ear cavity with pharynx Rods and cones are present but inactive here of Equalizes the presure of air on either side of ear drum 67. A pregnant female delivers a baby who suffers from stunted growth, mental retardation, low intelligence quotient and abnormal skin. This is a result of 1) Deficiency of iodine in diet 2) Cancer of the thyroid gland 3) Over secretion of thyroxine 4) Over secretion of TSH 72. The first movements of the fetus and appearance of hair on its head are usually observed during which month of pregnancy? 69. Why do all copulations not lead to fertilization and pregnancy? The root cause is ______ 1) Due to numerous sperms and one ovum 1) Third month 2) Fourth month 3) Fifth month 4) Sixth month 73. Match the following in relation to contraceptive methods LIST-I LIST-II ha .n et 68. Damage to thymus in a child may lead to 1) a reduction in RBC of blood. 2) a reduction in stem cell production. 3) loss of cell mediated immunity. 4) loss of antibody mediated immunity. 2) Due to less progesterone A Vasectomy 3) Ovum and sperms are not transported simultaneously tothe ampullary- isthmic junction B Coitus interrptus 2 Fallopian tube C Condom D Tubectomy 70. Mark the incorrect statement 4 Natural method 5 Vas deferens ra 1) Polyspermy is prevented bydepolarization of the membrane of ovum is called as fast block 3 Barrier method tib 4) Due to non – formation of corpus luteum 1 vaginal rings 3)A-4, B-5, C-3, D-2 4)A-2, B-4, C-3, D-5 up 2) Entry of sperm into ovum restarts the cell cycle by breaking down MPF and turning on the APC 1)A-5, B-4, C-3, D-2 2)A-5, B-4, C-2, D-3 ad 3) If fertilization occurs anywhere else other than uterus, it is called tubal pregnancy en 4) Ability to reproduce is lost in female primate after menopause 75. Pedigree chart for pattern baldness in humans, is given below w .e 71. Statement-I: Lack of menstruation may be indicative of pregnancy Statement-II: Menstruation only occurs if the released ovum is fertilized 74. Find the incorrect match 1) Genital warts - Human papilloma virus 2) Gonorrhoea - Neisseria gonorrhoea 3) Syphilis - Treponema pallidum 4) Genital herpes - Trichomonas vaginalis 1) Both Statement-I and Statement-II are correct. Statement-II is the correct explanation of Statement-I. w w 2) Both Statement-I and Statement-II are correct. Statement-II is not the correct explanation of Statement-I. 3) Statement-I is true, but Statement-II is false 4) Statement-I is false, but Statement-II is true Page 11 Identify the respectively genotypes of A, 1) Bb, bb, Bb 2) Bb, Bb, BB 3) Bb, Bb, Bb 4) Bb, BB, Bb B, C 80. What is the principle of vaccination? 1) Feeding of antibodies in our body 2) Feeding of immunological memory 76. Find out the incorrect match. Type of sex Character Determinatio n Example 3) To give active pathogens is our body 4) To provide passive immunity Sex of offspring Fumea depends of fertilizing ovum ZW - ZZ 81. The following drug shows effects on cardiovascular system of the body. ha .n et 2) ZO -ZZ Sex of offspring Butterflies depends of fertilizing sperm XX-XY Sex of offspring Man depends of fertilizing sperm 4) XX-XO Sex of offspring Bugs depends of fertilizing sperm 2) Coca alkaloid 3) Cannabinoids 4) LSD 82. The equation for the population growth depicted in the following graph is ra 3) 1) Opioids tib 1) I II b a c b c c + 1) b b + 2) ca c + a b 4) + w .e 3) a en a ad up 77. This segment of DNA has restrictions sites I and II which create restriction fragments a, b and c. Which of the following gel (s) produced by electrophoresis would represent the separation and identify of these fragments? 78. In a small population the Genetic drift is the change in the frequency of gene that occurs merely by w 1) Selection but not by chance 2) Chance but not by selection w 3) neither by selection nor chance 4) special creation but not by biological evolution 79. The cranial capacity waslargest among the 1) Pekingman 2) Java ape man 3) African man 4) Neanderthal man Page 12 1) dN = rN dt dN dt 2) dN 3) Nt = N0ert dt 4) K-N K = rN K-N N = rN 83. Match the items in column I with those in column II and choose the correct option using the codes given below: Column I (a) Ophrys Column II (i) Roots of higher plants (b) Fig tree (ii) (c) Mycorrhizae (iii) (d) Bee (iv) Code: (b) (a) (1) (ii) (iv) (2) (iii) (ii) (3) (iv) (ii) (4) (iv) (ii) Wasp Pseudocopulation Sexual deceit (c) (i) (i) (iii) (i) (d) (iii) (iv) (i) (iii) Read the following ha .n et 84. What is true for marine animals? 89. 1) Because of exosmosis they drink Sea water 2) As they drink sea water exosmosis occurs 3) They have glomerular kidneys 4) Salt gaining mechanism is evolved in them to a maintain homoeostasis 85. As we move away from the equator towards the poles, the species diversity 1) Increases 2) Decreases 3) First increases then decreases 4) First decreases then increases In the above ‘A’ and ‘B’ respectively are 1) Dissolved O2 and BOD 2) BOD and dissolved O2 3) Dissolved O2 and COD 4) COD and dissolved O2 ra tib 86. Given below are pie diagrams A, B and C related to proportionate number of species of major taxa of invertebrates, vertebrates and plants respectively. Critically study and fill in the blank I, II, III and IV Statement(1) : High concentration of DDT in birds causes thinning of egg shell and their premature breaking. up 90. III – 2) I- Molluscs, II – Amphibians, Angiosperms, IV - Fungi III – 3) I- Hexapoda, II – Amphibians, Fungi, IV - Angiosperms III – en ad 1) I- Molluscs, II – Amphibians, Fungi, IV – Angiosperms w .e 4) I- Turtles, II – Amphibians, III – Fungi, IV – Angiosperms w w 87. Find out the incorrect match 1. Dodo - Mauritius 2. Reserpine - Rauwolfia 3. Botanical gardens - In-situ conservation 4. Sacred forests - Khasi and Jaintia hills 88. Bioindicator of SO2 pollution 1) Pseudomonas putida 2) Lichens 4) Corals Page 13 3) Escherichia coli Statement(2) : DDT disturbs metabolism calcium 1) Statement 1 and 2 are correct 2) Statement 1 and 2 are in correct 3) Statement 1 is correct but 2 in correct 4) Statement 1 is incorrect and statement 2 is correct PHYSICS : αz α − 91. In the relation P = e k θ , P is pressure, z β is distance, k is Boltzmann constant and θ is the temperature . The dimensional formula of β will be 1) M 0 L2T 0 2) ML2T 3) ML0T −1 4) M 0 L2T −1 1) 2 2) 0.5 3) 3 2 4) 1 α 2 + β2 2) t 2 α 2 + β2 3) 3t α 2 + β2 4) 2mg 1) µ = 2 tan θ 1 3) µ = tan θ 2) µ = tan θ 2 4) µ = tan θ 97. The work done by a force acting on a body is as shown in the graph. The total work done in covering an initial distance of 20m is up 1) 3) zero 96. The upper half of an inclined plane of inclination θ is perfectly smooth while lower half is rough. A block starting from rest at the top of the plane will again come to rest at the bottom, if the coefficient of friction between the block and lower half of the plane is given by ra 93. The co-ordinates of a moving particle at any time t are given by x = αt 3 and y = βt 3 . The speed of the particle at time t is given by :- 1) 3mg 2) 6mg tib At the same time, another body is projected vertically upwards from B with velocity v2 . The point B lies vertically below the highest v point. For both the bodies to collide, 2 v1 should be ha .n et 92. A body is projected with velocity v1 from the point A as shown in figure. 4) 3t 2 α 2 + β2 en ad 94. Two blocks A and B of masses 2m and m, respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in the figure. The magnitudes of accelerations of A and B, immediately after the string is cut, are respectively 1) 225 J g g 2) , g 2 2 3) g , g 1) 100 4) g g , 2 2 95. Three blocks with masses m, 2m and 3m are connected by strings, as shown in the figure. After an upward force F is applied on block m, the masses move upward at constant speed v . The net force on the block of mass 2m is (g is the acceleration due to gravity) Page 14 3) 400 J 4) 175 J 98. In the non-relativistic regime, if the momentum, is increased by 100%, the percentage increase in kinetic energy is w .e w w 1) g , 2) 200 J 2) 200 3) 300 4) 400 99. An engine pumps water continuously through a hose. Water leaves the hose with a velocity v and m is the mass per unit length of the water jet. The rate at which kinetic energy imparted to water is 1 2) mv 2 1) mv 3 2 3) 1 2 2 m v 2 4) 1 3 mv 2 2 3) n(n + 1)l 2 4) 2l 105. Two wires are made of the same material and have the same volume. However wire 1 has cross-sectional area A and wire 2 has cross-sectional area 3A. If length of wire 1 increased by ∆x on applying force F, how much force is needed to stretch wire 2 by the same amount? 1) 4F ha .n et 100. Particles of masses m, 2m,3m,..., nm grams are placed on the same line at distances l , 2l ,3l ,...., nl cm from a fixed point. The distance of centre of mass of the particles from the fixed point in centimeters is (2n + 1)l l 1) 2) 3 n +1 2) 6F 3) 9F 4) F 106. A copper rod of length l1 and an iron rod of 2 n(n + 1) l2 always maintained at the same common temperature T. If the difference ( l2 − l1 ) is 15 cm and is independent of the value length of T, the l1 and l2 have the values (given the coefficient of linear expansion for copper and iron are 2.0 × 10 −6 C −1 and 1.0 × 10 −6 C −1 respectively) :1) l1 = 15cm, l2 = 30cm tib 101. A T joint is formed by two identical rods A and B each of mass m and length L in the XY plane as shown. Its moment of inertia about axis coinciding with A is 2mL 3 2) mL 12 4) None of these 2 3) mL 6 en ad 102. A thin rod of length L and mass M is bent at its midpoint into two halves so that the angle between them is 90°. The moment of inertia of the bent rod about an axis passing through the bending point and perpendicular to the plane defined by the two halves of the rod is 2ML2 24 ML2 3) 24 w .e ML2 2) 1) 6 ML2 4) 12 w 103. The height of the point vertically above the earth’s surface at which the acceleration due to gravity becomes 1% of its value at the surface is (R is the radius of the earth) 1) 8R 2) 9R 3) 10R 3) l1 = 10cm, l2 = 25cm 4) l1 = 25cm, l2 = 10cm up 1) 2 ra 2) l1 = 30cm, l2 = 15cm 2 107. Copper of fixed volume V is drawn into wire of length l . When this wire is subjected to a constant force F, the extension produced in the wire is ∆l . Which of the following graphs is a straight line? 1) ∆l versus 1 / l 2) ∆l versus l 2 3) ∆l versus 1 / l 2 4) ∆l versus l 108. A thermodynamic system undergoes cyclic process ABCDA as shown in figure. The net work done by the system is 4) 20R w 104. Infinite number of bodies, each of mass 2kg are situated on x-axis at distances 1m, 2m, 4m, 8m,…., respectively, from the origin. The resulting gravitational potential due to this system at the origin will be 1) − Page 15 4 G 3 2) −4G 3) −G 8 3 4) − G 1) zero 2) 2 P0V0 3) P0V0 4) 3 P0V0 2 113. A thick metallic spherical shell of inner radius r1 and outer radius r2 has a charge + Q . A charge + q is placed at the centre of the shell. The charge per unit area on the outer surface is r2 ha .n et 109. The oscillation of a body on a smooth horizontal surface is represented by the where equation, X is X = A cos(ωt ) displacement at time t and ω is frequency of oscillation. Which one of the following graphs shows correctly the variation of a with t ? r •+1q +Q 1) 2) 1) (Q − q ) 4π(r22 a O 4) 4πr22 2) 4) (Q − q ) 4πr22 (Q + q ) 4π(r22 + r12 ) 114. A parallel plate condenser with plate area A and separation ‘d’ is filled with two dielectric materials as shown in the figure. The dielectric constants are K1 and K2 respectively. The capacitance will be:- up ra 110. Two sound waves with wavelengths 5.0m and 5.5m respectively, each propagate in a gas with velocity 330m/s. We expect the following number of beats per second. 1) 6 2) 12 3) 0 4) 1 (Q + q ) tib 3) 3) − r12 ) 111. A train emiting a sound of frequency ad 1000 Hz , is moving at a speed of 220 ms −1 en towards a stationary object. Some of the sound reaching the object gets reflected back to the train as echo. The frequency of the echo as detected by the driver of the w .e train is (Speed of sound in air is 330 ms −1 ) 1) 3500 Hz 2) 4000 Hz 4) 3000 Hz 3) 5000 Hz ε0 A ( K1 + K 2 ) d 2) ε 0 A K1 + K 2 d K1 K 2 3) 2ε 0 A K1K 2 d K1 + K 2 4) 2ε 0 A K1 + K 2 d K1K 2 115. A network of six identical capacitors, each of value C is made as shown in the figure. Equivalent capacitance between points A and B is w w 112. In the circuit shown in figure, charge stored in the capacitor of capacitance 5µF is 1) 1) 20 µC 3) 60 µC Page 16 2) zero 4) 30 µC 1) C 4 2) 3C 4 3) 4C 3 4) 3C 116. In the network shown below, the ring has zero resistance. The equivalent resistance between the points A and B is 121. What is the value of inductance L for which the current is maximum in a series LCR circuit with C = 10 µF and ω = 1000 s −1 ? 1) 1 mH 2) 10 mH 3) 100 mH 1) 2R 2) 4R 3) 7R 4) 10R 117. A uniform wire of resistance 36 ohm is bent in the form of a circle. The effective resistance across the points A and B is ha .n et 4) cannot be calculated unless R is known 122. A conducting circular loop is placed in a uniform magnetic field 0.04T with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at 2mm/s. The induced emf in the loop when the radius is 2 cm is 2) 0.8 πµV 1) 4.8 πµV 4) 3.2 πµV 123. A small square loop of wire of side l is placed inside a large square loop of wire of side L(>> l ) . The loops are coplanar and their centres coincide. The mutual inductance of the system is ad up ra 1) 5Ω 2) 15Ω 3) 7.2 Ω 4) 30 Ω 118. A galvanometer has resistance of 5 ohm and a full scale deflection is produced by 15 milliamperes. What resistance may be connected in series with it to enable it to read maximum 1.5 volt? 2) 100 Ω 1) 95Ω tib 3) 1.6 πµV 3) 105 Ω 4) 110 Ω 2 en 119. An arc of a circle of radius R subtends an angle π at the centre. It carries a current I . The magnetic field at the centre will be µ0 I 2R 2) µ0 I µ I 3) 0 8R 4R w .e 1) 4) 2µ0 I 5R 120. P, Q and R are long straight wires in air, carrying currents as shown in the figure. The force on Q is directed Q w w P 20A 40A R 60 A 1) to the left 2) to the right 3) perpendicular to the plane of the diagram 4) along the current in Q Page 17 µ0 l 2 1) 2 2 π L µ0 l 2 2) 8 2 π L µ l2 3) 2 2 0 µ L 4) 2 2 0 2 2π L 124. A plane πl electromagnetic wave 8 E z = 100cos(6 × 10 t + 4 x ) V / m propagates in a medium. The refractive index of the medium is 1) 1.5 2) 2.0 3) 2.4 4) 4.0 125. The energy of the em waves is of the order of 15 keV. To which part of the spectrum does it belong? 1) Ultraviolet rays 2) γ - rays 3) X - rays 4) Infra-red rays 126. If one face of a prism of prism angle 30° and µ = 2 is silvered, the incident ray retraces its initial path. The angle of incidence is 1) 60° 2) 30° 3) 45° 4) 90° 127. A plane mirror is placed along the x-axis facing negative y-axis. The mirror is fixed. A point object is moving with 3iˆ + 4 ˆj in front of the plane mirror. The relative velocity of image with respect to its object is 132. Half life of a radioactive substance A is two times the half life of another radioactive substance B. Initially, the number of nuclei of A and B are N A and NB respectively. After three half lives of A, number of nuclei NA is NB 1 1 1 1 2) 3) 4) 1) 3 6 8 4 238 133. A radioactive reaction is 92U → 82Pb 206 . The number of α and β particles emitted respectively are 1) 10, 6 2) 8, 8 up 1) A.B ad 1) a single convergent beam 2) two different convergent beams 3) two different divergent beams 4) a convergent and divergent beam w .e en 129. The magnifying power of an astronomical telescope is 8 and the distance between the two lenses is 54cm. The focal lengths of eye lens and objective lens will be respectively 1) 6cm and 48cm 2) 48 cm and 6cm 3) 8cm and 64 cm 4) 64cm and 8cm w w 130. A particle of mass M at rest decays into two masses m1 and m2 with non-zero velocities. The ratio of de-Broglie wavelength of the particles λ1 / λ 2 is 1) m1 m2 2) m2 m1 3) 1:1 4) m1 m2 131. The number of photons of wavelength of 540nm emitted per second by an electric bulb of power 100W is (Given h = 6 × 10 −34 J s ) 1) 100 Page 18 2) 1000 3) 3 × 1020 4) 3 × 1018 3) 12, 6 4) 8, 6 134. The Boolean expression for the given circuit is ra liquids of refractive indices µ2 and µ3 , as shown in the figure. µ 2 > µ1 > µ3 . A wide, parallel beam of light is incident on the lens from the left. The lens will give rise to tib 1) −8 ˆj 2) 8 ˆj 3) 3iˆ − 4 ˆj 4) − 6iˆ 128. A double convex lens, made of a material of refractive index µ1 , is placed inside two ha .n et of both are equal. Then the ratio 2) A + B 3) A + B 4) A + B 135. Two ideal diodes are connected to a battery as shown in the circuit. The current supplied by the battery is 1) 0.75A 2) zero 3) 0.25A 4) 0.5A CHEMISTRY : 136. In the Schrodinger’s wave equation the term Ĥ represents −h2 ∂ 2 ∂2 ∂2 + + v 8π 2 m ∂x 2 ∂y 2 ∂z 2 −h 2 ∂ 2 ∂2 ∂2 2) 2 2 + 2 + 2 + v 8π m ∂x ∂y ∂z 1) h2 ∂ 2 ∂2 ∂2 + + +v 8π 2 m ∂x 2 ∂y 2 ∂z 2 −h2 ∂ 2 ∂2 ∂2 4) 2 2 + 2 + 2 + Ψ 8π ∂x ∂y ∂z 3) 138.Which of the following is an incorrect match? 1) Z=103…Unniltrium 2) Thorium…f-block element 3)ns1-2(n-1)d1-10…general outer electronic configuration of d-block 4)Fluorine….highest electron gain enthalpy 139. Bond polarity is higher in which of the following molecule 1) NF3 2) NCl3 3) CCl4 4) BeF2 140.Removal of electron is easiest in 2) O2+( g ) 3) N 22(−g ) 4) O22+ M 4) 1 ra M 3) 4 en ad 142. A 50L vessel contain 36g water at 27 0 C . The vessel is saturated with nitrogen gas. After some time the loss in water is found to be 1.20g. Assuming ideal behavior to water, what will be the aqueous tension at 27 0 C ? 2) 0.1256 atm 4) 0.03284 atm w .e 1) 0.0625 atm 3) 0.6275 atm w 144. “X” on hydroformylation followed reduction gave n-butyl alcohol. “X” is 1) Ethene 2) Propene 3) 1-Butene 4) 2-Butene w degree of decomposition of PCl5 is 0.5. The total number of moles at equilibrium will be: 1) 1.5 2) 3 3) 4 4) 6 150. 100ml of 0.1M NH4OH is mixed with 50ml of 0.1M HCl. pH of the mixture is 1) 4.8 2) 4.5 3) 9.2 4) 9.5 151.Herbicide among the following is 2) Na3 AsO3 1) NaClO3 3) NaCl 143. Gas with higher rate of diffusion is with atomic number 1) Z = 7 2) Z= 8 3) Z = 9 4) Z = 10 by 145.Na2CO3 and NaHCO3 can be distinguished using 1) Phenolpthalein 2) Methyl orange 3) Methyl red 4) All of these Page 19 establish an equilibrium PCl5( g ) ⇌ PCl3( g ) + Cl2( g ) . At equilibrium the up M 2) 3 148. Incorrect statement is 1) All carbon-carbon bond lengths in fullerene are equal 2) Graphite is a lubricant 3) Fullerene is aromatic 4) Diamond has 3D network structure 149. 4 mole of PCl5 is heated in a 2L vessel to 141.Equivalent weight of ferrous oxalate in its reaction with acidified KMnO4 is [M = molecular weight FeC2O4 ] M 1) 2 147. B2O3 is the dehydration product of 1) H 3 BO3 2) HBO2 3) BF3 .NH 3 4) Both 1 and 2 tib 1) N 2+( g ) 146. Thermodynamic stability is least for 1) BeCO3 2) NaHCO3 3) CaCO3 4) Na2CO3 ha .n et 137.For an element with Z=38 the number of electrons present in orbitals with n+l value 5 are 1) 14 2) 16 3) 18 4) 20 4) Both 1 and 2 152. An organic compound on analysis produces 1.88g of AgBr from 2g of the sample. The weight percentage of Bromine (atomic weight=80) in the organic compound is 1) 40% 2) 62% 3) 50% 4) 34% 153. IUPAC name of CH 3 − CH 2 − CH 2 − CH 2 − N ( CH 3 )2 1) N,N-dimethyl-1-butanamine 2) N,N-dimethyl-2-butanamine 3) N,N-dimethyl-3-butanamine 4) n-Butyl dimethylamine 154.Which of the following will not show optical isomerism: 1) Cl-CH=C=CH-CI 2) Br-CH=C=CH-Br H H OH OH H 159.An optically active compound ‘X’ having molecular formula C4H4O3 it evolves CO2 with NaHCO3. ‘x’ on treatment with LiAIH4 gives achiral compound then ‘x’ is: H Me Cl COOH Me COOH 4) 3) 155.Ethane on oxidation in presence of manganous acetate gives “X”. Sodium salt of “X” on kolbe’s electrolysis gives n-butane. “X” is 1) methyl alcohol 2) formaldehyde 3) acetic acid 4) formic acid 1) O 2) OH OH OH 3) O 156. Br 1) en ad 2) 4) OH 157. w .e OH Hg ( OAc )2 , THF , H 2O X. Here 'X' is NaBH 4 , OH w OH 1) 2) w OH OH HO OH 3) 4) OH OH Page 20 OH O OH X → H 2O . “X” is 2) NaBH4 4) B2H6 1) LiAlH4 3) both 1 and 2 161.Most acidic is 1) Methanol 2) Ethanol 3) n – Propyl alcohol 4) n – Butyl alcohol up Undergoes hydrolysis by SN1 mechanism. Major product is OH OH 4) OH ra 160. 3) COOH OH tib COOH 2) Antimicrobial 4) Antacid ha .n et Cl 158. Prontosil is 1) Antimalarial 3) Antihistamine 162.Glucose is converted to ethanol by using 1) Maltase 2) Diastase 3) Zymase 4) Invertase 163.In the conversion (C2 H5 )2 OH + of (C2 H 5 )2 O to HSO4− , the role of ether is 1) Lewis acid 2) Bronsted acid 3) Lewis base 4) Dehydrating agent X 164. RCOOR → RCH 2OH + ROH . ‘X’ is 1) H 2 / Catalyst 2) R2Cd 3) KMnO4 4) R Mg X 165.An organic compound can react with 2,4D.N.P. but not I2/NaOH. The organic compound is 1) Ethanal 2) Acetone 3) 3–Pentanone 4) Acetyl chloride 166.Acetamide is converted to methyl amine by using 2) NaBH4 4) Br2/NaOH 1) Only oxidation 3) Both oxidation and reduction 4) Neither oxidation nor reduction 174.The chemical used in the estimation of carbon monoxide is: 2) I 2O5 3) I 2O7 4) IO2 1) I 2O4 175.The complex Cr ( en )2 Cl2 Br can exhibit the isomerism A) Ionisation C) Geometrical 1) Only A 3) A and C B) Optical D) All of these 2) A and B 4) A, B and C 176.Wrong match is 1) CO…Pi acceptor ligand 2) Co2(CO)8… bridged carbonyl group 3) Li[AlH4]…cationic complex 4) Ni(CO)4…EAN is 36 ra 168.The halide of a metal MX crystalizes as ccp structure (NaCl type). If all the atoms situated at one of the tetrad axis are removed then what will be the simplest molecular formula of halide 3) MX2 4) MX3 1) MX 2) M3X4 2) Only reduction ha .n et 167. The osmotic pressure is exhibited By 450ml of solution containing 1g of polymer of molecular weight 1,85,000 at 370 C is 1) 30.9 Pascals 2) 420 Pascals 3) 19.8 Pascals 4) 16.25 Pascals tib 1) LiAlH 4 3) PCC ∆ 173. 2 KMnO4 → X + Y + O2 . X and Y are compounds of Mn. In the reaction KMnO4 undergoes: ad up 169.The number of faradays with 50% current efficiency needed to reduce one mole potassium permanganate in acidic medium are 1) 2.5 2) 15 3) 10 4) 2 w .e en 170. During electrophoresis of a colloidal sol the dispersed phase migrates towards cathode. Which of the following electrolyte has the maximum coagulation power to coagulate the sol? 1) Potassium ferrocyanide 2) Barium chloride 3) Calcium phosphate 4) Aluminium fluoride 171.For the reaction N 2 + 3H 2 → 2 NH 3 . If the rate w w of disappearance of nitrogen is 1.12g/min then the rate of disappearance of hydrogen will be 1) 0.6g/min 2) 0.24g/min 3) 2.4g/min 4) 6g/min 172.Moist NH 3 can be dried by using 1) H 2 SO4 2) P4O10 3) CaCl2 Page 21 4) CaO 177. Which of the following contains a alpha glycosydic linkage between C-1 of glucose and C-4 of glucose 1) Sucrose 2) Galactose 3) Maltose 4) Cellulose 178.Nylon – 2 – Nylon – 6 is an example of A) Polyamide polymer B) Biodegradable polymer C) Condensation polymer 1) A and B 2) A and C 3) B and C 4) A, B and C 179.Reaction of which of the following with water is a disproportionation reaction? 2) XeF4 3) XeF6 4) XeO3 1) XeF2 180. Monds process is used in the refining of 1) Ni 2) NiO 4) Zr 3) Ni ( CO ) 4 KEY SHEET BIOLOGY 2 2) 2 3) 2 4) 2 5) 1 6) 4 7) 3 8) 3 9) 1 10) 3 11) 2 12) 1 13) 2 14) 4 15) 4 16) 3 17) 1 18) 1 19) 1 20) 4 21) 1 22) 4 23) 1 24) 4 25) 3 26) 4 27) 4 28) 3 29) 1 30) 4 31) 4 32) 1 33) 4 34) 4 35) 4 36) 3 37) 2 38) 3 39) 2 40) 3 41) 1 42) 1 43) 2 44) 2 45) 4 46) 4 47) 2 48) 2 49) 3 50) 4 51) 3 52) 2 53) 2 54) 4 55) 3 56) 2 57) 1 58) 2 59) 1 60) 4 61) 2 62) 3 63) 1 64) 2 65) 1 66) 4 67) 1 68) 3 69) 3 70) 3 71) 3 72) 3 73) 1 74) 4 75) 3 76) 2 77) 2 78) 2 79) 4 80) 2 81) 3 82) 2 83) 4 84) 1 85) 2 86) 1 87) 3 88) 2 89) 1 90) 1 1 92) 2 93) 4 94) 2 101) 2 102) 4 103) 2 104) 2 111) 3 112) 2 113) 3 121) 3 122) 4 123) 1 131) 3 132) 3 136) 146) 4 tib 1 97) 2 98) 3 99) 4 100) 1 105) 3 106) 1 107) 2 108) 1 109) 3 110) 1 3 115) 3 116) 1 117) 1 118) 1 119) 2 120) 1 124) 2 125) 3 126) 3 127) 1 128) 4 129) 1 130) 3 en 133) ra 96) 134) 1 135) 4 2 137) 3 138) 4 139) 4 140) 3 141) 2 142) 4 143) 4 144) 2 145) 1 1 147) 4 148) 1 149) 4 150) 3 151) 4 152) 1 153) 1 154) 3 155) 3 2 157) 2 158) 2 159) 3 160) 3 161) 1 162) 3 163) 3 164) 1 165) 3 171) 2 172) 4 173) 2 174) 2 175) 4 w 156) 3 114) w .e CHEMISTRY 95) ad 91) up PHYSICS 4 167) 1 168) 1 169) 3 170) 1 176) 3 177) 3 178) 4 179) 2 180) 1 w 166) This model test paper was prepared and verified by Senior faculty Sri Chaitanya Medical Academy Telangana & Andhra Pradesh. Page 22 ha .n et 1) NEET MODEL GRAND TEST PHYSICS SOLUTIONS αz should be dimensionless , kθ 91. = MLT −2 −2 α α MLT 0 2 0 = M L T Ans. P = = [β] = = β P ML−1T −2 tib −2 α α MLT 0 2 0 = M L T Ans. P = = [β] = = β P ML−1T −2 ha .n et 2 −2 −1 K θ ML T K V K ∴ [α] = = Z [ L] Two bodies will collide G + highest point if both cover same vertical height in the same time. So, 92. dx dy = 3xt 2 and = 3βt 2 dt dt 93. dx dt 2 + dy dx 2 en t= up V2 = sin 30 = 0.5 Ans. V1 ad ⇒ ra V12 sin 2 30 V22 = ⇒ 2g 2g 94. After string is cut w .e 2 ma∆ = 3mg − 2mg ⇒ G∆ = g Ans. 2 maB = mg or aB = g Ans. 95. Conceptual. w 96. As all blocks are moving with constant velocity. So a =0 so net force on each block is zero. w 97. F 20 10 0 Page 23 B C D 15 E 20 Work done = Area under F-S graph = Area at trapezium ∆BCD + Area At trapezium CEFD = 1 1 × (10 + 15) × 10 + (10 + 20) × 5 2 2 = 125 + 75 = 200J Ans. P2 ⇒ K α P2 2m 2 ha .n et K= 98. 2 P K1 P1 1 = = 1 = ⇒ K 2 = 4 K1 K 2 P2 4 2P 1 % increase is 99. Velocity of water is V, mass flowing per unit length is ‘m’ ra ∴Mass flowing per second = mv up ∴Rate at K.E or K.E per second 1 1 = mv v 2 = mv3 2 2 ml + 2m × 2l + 3m.3l + ...... m + 2m + 3m + ...... l n(n + 1)(2n + 1) l (2n + 1) 6 = n(n + 1) 3 2 w w .e en ml (1 + 4 + 3 + ......) = = m(1 + 2 + 3 + ......) ad 100. X CM = 101. tib K + K1 KE = 2 × 100 = 300% Ans. K1 w I = I A + IB = 0+ Page 24 mL2 mL2 = Ans. 12 12 102. O L 2 A ha .n et L 2 B Total Max = M total length = L 2 2 M L 1 ML M.I.total = 2 × Ans. × = 2 2 3 12 gR 2 g gR 2 ⇒ = 100 ( R + h) 2 ( R + h) 2 tib 103. g h = 104. V = −G × 2 1 −G × 2 2 −G × 2 4 −G × 2 ..... 8 en ad 1 = −2G 1 1 − 2 up 1 1 1 = −2G 1 + + + + ...... 2 4 8 ra ⇒ R + h = 10 R or h = 9 R Ans. 2 = −2G = −4G Ans. 1 w .e 2 2 2 105. Y = FL ⇒ F = YA∆L = Y A ∆L = YA ∆L = YA ∆x A∆L L AL V V 2 w F 1 A12 ( 3A ) = 2 = = g ⇒ F 1 = gF Ans. 2 F A A 106. Conceptual. F / ∆ Fl = ∆l / l Α∆l w 107. V = Al , Y = Fl Fl 2 ⇒ ∆l = = ∆y YV ∴ ∆l α l 2 , hence graph between ∆l and l 2 is a straight line. Page 25 PV 108. WBCOB = − area of ∆BCO = − 0 0 2 P0V0 2 WAOD∆ = + area of ∆AOD∆ = + 2 ha .n et ∴ WNet = WBOB + WAOD∆ = − P0V0 + P0V0 = 0 2 109. Conceptual. V V 330 330 − = − λ1 λ 2 5 5.5 110. 330 −330 = 6 Ans. 5 5.5 ra = n1 − n2 = tib ∴ Number of beats per second 111. Frequency of the echo detected by the driver of the train is ( 330 + 220 ) = 1000 × 550 = 5000 = 1000 (330 − 220) 110 up V + VT n1 = n V − VT 112. 5µF and 3µF capacitors are short circuted . ad ∴ charge on 5µF will be zero. 113. Charge per unit area on outer surface Q+q 4πr22 114. Q = q = 10 × 10−6 2 × 8.85 × 10 −12 = 0.56 × 106 ≈ 6 × 105 Mm2C −1 w .e 26 en = 115. Redraw the Ckt On simple fraction we will w w A ⇒ Ceq = Page 26 C C C C C C 2C 2C 4C + = Ans. 3 3 3 B 116. Eq. Ckt diagram is 3R R ⇒ Req = 2 R ha .n et 3R B 3R 117. Resistance of smaller arc A13, R1 = R / 6 = 36 / 6 = 6Ω Resistance of bigger arc, 5R 36 = 5 × = 30Ω 6 6 tib R2 = Coefficient resistance between R+5= 1.5 1500 = = 100Ω 0.015 15 ∴ R = 95Ω Ans. µ0 I µ I ( π / 2) = 0 Ans. 4πR 8R en 119. B = ra V 1.5 or 0.015 = R+G R+G ad 118. I g = 6 × 30 = 5Ω 6 + 30 up A& B = w .e 120. Parallel currents attract and antiparallel currents both due to P(20A) and Q(60A). then force on Q is towards left. 1 1 1 ⇒ ω2 = or L = 2 LC LC ωC w 121. ω = w ∴L = 1 1000 × 1000 × 10 × 10−6 122. Emf = E = = 0.1H ≃ 100mH dθ dr = Bπ(2r ) dt dt = 0.04 × π× 2 × 2 × 10−2 × 2 × 10−3 = 3.2πµV Page 27 123. L l ha .n et I I I Let current I be flowing in the larger loop B = 4× µ Ι 2 = 2 2 0 π L 2 P0 2 I 4π L Flux linked with smaller loop W 6 × 108 3 124. V = = = × 108 K 4 2 C 3 × 108 = = 2 Ans. V (3 / 2) × 108 ad ∴µ= ra µ l2 Q2 > M =2 2 0 Ans. π L I up M= µ0 I 2 ×l π L tib Q2 = BA2 = 2 2 × hc 1240 evnm = = 0.083nm E 15 × 103 ev X-rays range are from 1nm − 10−3 nm en 125. λ = w .e 126. A µ 30° 60° w P > • > l R r = 30° µ w C B It is clear from fig that ray will retrace the path when incident ray QR, incident normally on µ= the surface sin l 1 ⇒ sin l = 2 sin 30 = 2 × sin r 2 ∴ Q = 45° Page 28 polished AC, this angled refraction r = 30° . ( ) ( ) 127. Vrel = V ima − V ob = 3iˆ − 4 ˆj − 3iˆ + 4 ˆj = −8 ˆj 128. As µ 2 > µ1 the upper half of lense because diverging as µ1 > µ3 the lower half of lens become converging. fe ∴ f e = 6cm, f 0 = 48cm 130. MXO = m1v1 + m2v2 ⇒ m1v1 = − m2v2 = m2v2 ( is magnitude) λ1 h / m1v1 = =1 λ 2 h / m2v2 ∴ M = 100 × 540 × 10−9 18 × 10 −26 = 3 × 1020 ra Nhc M × (6 × 10 − 34 ) (3 × 108 ) ⇒ 100 = λ 540 × 10 −5 up = tib 131. Power ha .n et f 129. M = 0 = 8, L = f0 + f e = 54cm 132. Three half lines of B and equivalentto six half lines of B 3 6 3 ad N (1 / 2)6 1 1 1 1 N A = NB ⇒ A = = = 3 N B (1 / 2) 8 2 2 2 en 133. Conceptual. 134. Y = A.B + A + B = A + B + A . B w .e = A + B + A. B = A + B (using A.B. B. A ) = AB 135. D1 is formed biased and D2 is reverse biased . So 5V 1 = = 0.5 A 10Ω 2 w w I= current supplied by the battery is This model test paper solutions were prepared and verified by Senior faculty Sri Chaitanya Medical Academy Telangana & Andhra Pradesh. Page 29
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