SUMMATIVE ASSESSMENT – II, 2012
II, 2012
SC-1079
SCIENCE /
Class – IX /
IX
Time allowed : 3 hours
Maximum Marks : 90
3
90
General Instructions :
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)
(viii)
(ix)
The question paper comprises of two Sections, A and B. You are to attempt both the
sections.
All questions are compulsory.
There is no overall choice. However, internal choice has been provided in all the five
questions of five marks category. Only one option in such questions is to be attempted.
All questions of Section-A and all questions of Section-B are to be attempted separately.
Question numbers 1 to 3 in Section-A are one mark questions. These are to be answered in
one word or in one sentence.
Question numbers 4 to 7 in Section-A are two marks questions. These are to be answered in
about 30 words each.
Question numbers 8 to 19 in Section-A are three marks questions. These are to be answered
in about 50 words each.
Question numbers 20 to 24 in Section-A are five marks questions. These are to be answered
in about 70 words each.
Question numbers 25 to 42 in Section-B are multiple choice questions based on practical
skills. Each question is a one mark question. You are to select one most appropriate
response out of the four provided to you.
(i)
(ii)
(iii)
(iv)
(v)
1
3
(vi)
4
7
(vii)
8
19
(viii)
20
(ix)
25
30
50
24
70
42
Page 2 of 12
SECTION-A /
1.
The chemical formula of oxide of an element X is X2O3. Write the formula of its chloride.
X
X2 O3
2.
What is the primary characteristic on which the first division of organisms is made ?
3.
Name a gas mainly responsible for global warming.
4.
Give three features of butterflies to justify its classifications as Arthropoda. Mention one more
animal of the same family.
5.
(a)
(b)
(c)
(d)
(a)
Name a worm which is found in our small intestine
Name the bacteria which can cause acne.
Which protozoan is responsible for sleeping sickness.
Which disease is caused by the protozoan leishmania
(b)
(c)
(d)
6.
Why an army tank weighing more than a thousand tonne rests upon a continuous chain.
7.
Distinguish between positive and negative work. When you lift an object, two forces act on it.
Identify these forces. Which one of the two does,
(a)
positive work ?
(b)
negative work ? Justify your answer.
(a)
8.
(b)
Nitu Presented a silver lamp to her mother on her birthday. The lamp contained 3.011x 1023
atoms of silver in it. What is the Mass of silver lamp and the cost of it If 1g silver costs Rs.60.
Atomic mass of Ag108u, No6.0221023 per mol.
3.0111023
1g
Ag108u, No6.0221023
9.
(a)
(b)
(c)
60
)
Give the schematic atomic structures of chlorine atom and chloride ion.
Mention two uses of isotopes in the field of Medicine
How is the following pairs of atom known as ?
40
Ar
18
40
Ca
20
Page 3 of 12
(a)
(b)
(c)
40
Ar
18
40
Ca
20
10. State three conclusions drawn by Rutherford from the - particle scattering experiment.
11. Write three differences between animals belonging to Aves group and those in Mammalia
group.
12. Write appropriate terms for the following :
(a)
Animals that are able to maintain a certain body temperature over a wide range of
temperature in the environment.
(b)
Plants which bear naked seeds
(c)
Animals which have Pseudocoelom
(a)
(b)
(c)
13. State the method of transmission of each of the following diseases :
(a)
(i)
Cholera
(ii)
Aids
(iii)
Malaria
(iv)
Pneumonia.
(b)
Name the diseases a person will get if the disease causing microbes target the liver of a
person.
(a)
(i)
(ii)
(iii)
(iv)
(b)
14. (a)
(b)
Lactometers are used to determine the purity of a sample of milk. State the principle on
which this instrument is based on.
Write two factors on which the buoyant force acting on a body when immersed in a
liquid depends.
(a)
(b)
15. A man is standing at the top of 105 meter high tower. He throws a ball vertically upwards, with a
velocity of 20 m/s. After how many seconds will the ball pass him going downward ? How long
after its release will the ball reach the ground ?
105
20 m/s
Page 4 of 12
16. Define power. Derive its S.I. unit. An electric bulb is rated 15 watts. What does it mean ? What is
the energy consumed in joules if it is used for 10 minutes ?
S.I.
15W
10
17. (a)
(b)
Draw a graph between wave disturbance and time to show wave shape for a low and
high pitched sound.
In an orchestra, violin and flute are played at the same time but still these are distinctly
recognizable. Name the characteristic that makes it possible.
(a)
(b)
18. (a)
(b)
(a)
How is soil formed ?
What is soil erosion ? write two steps to control soil erosion.
(b)
19. List the causes that affect the life forms that are found in water bodies in various ways. Name
the element present in coal other than carbon that releases harmful gases during combustion of
coal.
20. (a)
(b)
Write the chemical formulae of the following compounds :(i)
Ammonium sulphate
(ii)
Magnesium carbonate
When 3.0 g of carbon is burnt in 8.0g of oxygen 11.0g of CO2 is formed. What mass of
carbon dioxide will be formed, when 3.0 g of carbon is burnt in 50.0 g of oxygen. Which
law of chemical combination will govern your answer ? State the law.
(a)
(i)
(b)
3.0 g
(ii)
8.0 g
11.0 g
3.0 g
50.0 g
OR /
(a)
(b)
(c)
Convert into mole
(i)
12g of oxygen gas
(ii)
22 g of carbon dioxide
Verify by calculating that 5 moles of CO2 and. 5 moles of H2O do not have the same mass
Write the names of the elements present in :
(i)
quick lime
(ii)
hydrogen bromide
Page 5 of 12
(a)
(i)
12g
(ii)
(b)
5
22 g
CO2
5
(c)
(i)
21. (a)
(b)
(c)
(a)
(ii)
Draw the diagram of Hydra and label the following parts.
(i)
Mouth
(ii)
Mesoglea
(iii)
Foot.
You are given green gram, Wheat, Maize and tamarind seeds. How will you find out by
a simple activity if they are monocot or dicot seeds ?
Plants of which group are called amphibians of the plant kingdom ?
(i)
(ii)
(iii)
(b)
(c)
(a)
(b)
(c)
(a)
OR /
Draw the diagram of Planaria and label the following parts :
(i)
Eyes
(ii)
Gastrovascular cavity,
(ii)
Write four characteristics of vertebrates.
Name the group of animals to which prawn and centipede belong.
(i)
(ii)
Pharynx.
(ii)
(b)
(c)
22. (a)
(b)
(c)
(a)
Derive an expression for kinetic energy of a body having mass ‘m’ and moving with a
velocity v.
When speed of a body is increased 5 times, what is the change in its kinetic energy ?
Two masses m and 2m are dropped from heights h and 2h. On reaching ground, which
will have a greater kinetic energy and why ?
m
v
(b)
5
(c)
m
(a)
(b)
OR /
State the law of conservation of energy.
What is the work done to increase the velocity of a car from 36 km/h to 72 km /h, if
the mass of the car is 1500 kg.
Where does an oscillating pendulum have maximum P.E. and K.E. ?
(c)
(a)
(b)
2m
h
1500 kg
2h
36 km/h
72 km /h
(c)
Page 6 of 12
23. (a)
(b)
(a)
Describe an activity (with diagram) to show that sound needs a medium to travel.
Mention four uses of ultrasonic waves.
(b)
OR /
(a)
(b)
(c)
(a)
Write three differences between transverse waves and longitudinal waves.
How does a mega phone works ?
Why are the ceilings of concert halls curved ?
(b)
(c)
24. (a)
(b)
Draw the schematic diagram of nitrogen cycle in nature.
Explain how the nitrogen molecules are converted into nitrates and nitrites by
(i)
Biological Process
(ii)
Physical process.
(a)
(b)
(i)
(a)
(b)
(ii)
OR /
Draw a Schematic diagram of carbon cycle in nature.
What is the main cause of increase in CO2 in atmosphere ? Explain the harmful effect
of increase in CO2 content in atmosphere.
(a)
(b)
CO2
CO2
SECTION - B /
25. To verify the law of conservation of Mass in the case of a Chemical change, Sodium sulphate
and Barium chloride should be used in the form of :
(a)
fine powder.
(b)
large crystals.
(c)
molten liquid.
(d)
aqueous solutions.
(a)
(b)
(c)
(d)
26. When a student mixed barium chloride solution with sodium sulphate Solution he observed,
(a)
a blue precipitate.
(b)
a blue colour solution.
(c)
a white precipitate.
(d)
No change in the mixture.
(a)
(c)
(b)
(d)
Page 7 of 12
27. Which feature a student will look for to recognize a male cockroach and a female cockroach ?
(a)
nine abdominal segments
(b)
brood pouch
(c)
pair of anal styles.
(d)
All of these.
(a)
(b)
(c)
(d)
28. The teacher had shown a student a specimen R and asked him to find if it is Spirogyra. The
features that the student will look for the identification is.
(a)
Filamentous, presence of cytoplasmic strands, presence of Pyrenoids.
(b)
Presence of cones, presence of rhizoids
(c)
cytoplasmic strands, root like rhizoids, female cones
(d)
presence of filaments, nodes, internodes.
R
(a)
(b)
(c)
(d)
29. Observe the pictures of a bird and a bony fish. The feature that places them in the same phylum
is :
(a)
(c)
pointed heads
presence of scales
(a)
(b)
(b)
(d)
(c)
30. Mushroom produces spores from :(a)
pileus
(b)
gills
(a)
bulky thorax
post anal tails.
(b)
(d)
(c)
(c)
annulus
(d)
stipe.
(d)
Page 8 of 12
31. A student observed a monocot plant and noted the following observation. The observation
which is incorrect is
(a)
leaves have reticulate venation
(b)
three petals are seen in the flower.
(c)
stem is hollow
(d)
adventitious roots
(a)
(b)
(c)
(d)
32. A student identified the following features while observing the eggs in the life cycle of mosquito.
Which of the observation is incorrect ?
(a)
eggs are oblong shaped and are clamped
(b)
eggs are separated round shaped, bigger in size.
(c)
eggs are separated, oval shaped smaller in size.
(d)
eggs are clustered, bead like structure.
(a)
(b)
(c)
(d)
33. Four students adopted the following methods to measure the volume of solid. By immersing it
in a measuring cylinder filled with water. The correct method is of the student,
(a)
A
(b)
B
(c)
C
(d)
D
Page 9 of 12
(a)
A
(b)
B
(c)
C
(d)
D
34. A piece of metal of mass 110g is dipped in a measuring cylinder containing water at 24 mL
mark. The water rises to 38 mL of mark. Volume and density of metal are respectively :(a)
14 mL, 7.85 g /cm3
(c)
38 mL, 6g / cm3
110 g
(b)
14 mL, 7g / cm3
(d)
24 mL, 1.2 kg / m3
24 mL
(b)
14 mL, 7g / cm3
(d)
24 mL, 1.2 kg / m3
38 mL
(a)
(c)
14 mL, 7.85 g /cm3
38 mL, 6g / cm3
35. 4 students immersed an object in both sea water and tap water separately and measured their
weight using spring balance, and concluded the following. Which one is the right
conclusion ?
(a)
The loss in weight of the object is less in sea water than tap water.
(b)
There is no loss of weight in sea water and tap water.
(c)
The loss of weight is equal in sea water and tap water.
(d)
The loss of weight of the object is more in sea water than tap water.
4
(a)
(b)
(c)
(d)
36. When a body is immersed in a liquid, the unit of measuring upthrust acting on it due to
displaced liquid is :
(a)
watt
(b)
joule
(c)
newton
(d)
kg m/s.
(a)
(b)
(c)
(d)
kg m/s.
37. To observe and compare the pressure exerted by the three faces of a cuboid on sand, the
following apparatus is available in the laboratory :
(a)
Iron cuboid of dimensions 12 cm6cm3cm
(b)
Aluminium cuboid of dimensions 12 cm6 cm3cm
(c)
coarse sand in a tray.
(d)
very fine sand in a tray.
Page 10 of 12
The best choice of apparatus would be :
(a)
Iron cuboid and coarse sand.
(c)
Iron cuboid and fine sand
(i)
12 cm6cm3cm
(ii)
12 cm6 cm3cm
(b)
(d)
Aluminium cuboid and coarse sand
Aluminium cuboid and fine sand.
(iii)
(iv)
(a)
(b)
(c)
(d)
38. A student observed and compared the pressure exerted by a solid iron cuboid, on fine sand,
using the cuboid with different faces
Which of the observation is correct ?
(a)
Face A showed greatest depression.
(b)
Face B showed greatest depression.
(c)
Face C showed greatest depression.
(d)
All the faces showed same depression.
(a)
A
(b)
(c)
C
(d)
B
39. A student while verifying the laws of reflection of sound, measured the angle between the
incident sound wave and reflected sound wave to be 1200 then, he would note the angle of
incidence as,
(a)
00
(b)
1200
(c)
1800
(d)
600
(b)
120
(c)
180
(d)
60
120
(a)
0
Page 11 of 12
40. While doing the experiment to verify the laws of reflection of sound, the sound received in the
ear should be,
(a)
The direct sound from source.
(b)
The sound reflected from the surface of the table.
(c)
The sound coming through the tube after reflection
(d)
The sound coming through the tube after reflection and from the table.
(a)
(b)
(c)
(d)
41. The following figure shows an incident pulse P reflected from a rigid support. Which one of A,
B, C, D represent the reflected Pulse correctly ?
(a)
A
(b)
B
(c)
C
(d)
D
P
(a)
A
(b)
B
A, B, C
(c)
C
(d)
D
D
42. To find the velocity of the pulse produced in a string, we need,
(a)
only a measuring scale
(b)
only a stop watch.
(c)
a measuring cylinder and stopwatch.
(d)
both measuring scale and stopwatch.
(a)
(b)
(c)
(d)
-oOoPage 12 of 12