LINGAYA’S PUBLIC SCHOOL
AFFILIATED TO CBSE (AFFILATION NO.531132)
VILLAGE: KANWARA, JASANA ROAD, GREATER FARIDABAD
SESSION (2016-2017)
GRADE – 11th
ASSIGNMENT
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SUBJECT
CHEMISTRY
1. A 10 percent solution of sulphuric has density 1.2 gram/ml. Find molarity of the solution.
2. 4.9 gram sulphuric acid dissolved in 5ooml water. Find normality of solution.
3. How much carbon dioxide will be produced from 4 gram carbon.
4. 5.6 ltr oxygen will be obtained by heating potassium chlorate. Calculate the amount of potassium
chlorate.
5. What will be the molarity of a solution, which contains 5.85 g of NaCl(s) per 500 mL?.
6.How much copper can be obtained from 100 gm copper sulphate.
7.If density of methanol is.793kgperliter.What its volume needed for making 2.5 ltr of its
.25m solution.
8.34.2 gr sugar dissolved in 500 ml water. Find molarity of solution.
9. In the specectrum of hydrogen an electron jumps from 6th to 3rd shell. Find the frequency and
Wave length.
10.draw the shapes of s,p,d orbits.
11. Write a detailed note on Bohr’s theory.
12. Explain particle nature of electromagnetic radiation.
13. Write a detailed note on law of multiple proportions along with example
14.Write a note on isotones, isotopes, isobars, isoelectronics.
15. Yellow light emitted from sodium lamp has a wave length580 nm. Calculate frequency and wave
number.
ASSIGNMENT
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SUBJECT
PHYSICS
Q:-1 A ball is kicked at an angle of 30 o with the vertical .If the horizontal component of its velocity
is 19.6 m/s,find the maximum height and horizontal range.
Q:-2 A particle is projected horizontally with a speed u from the top of plane inclined at an angle θ
with the horizontal .How far form the point of projection will the particle strike the plane?
Q:-3 If A and B denote the sides of a parallelogram and its area is AB/2.find the angle between A
and B.
Q:-4 The Resultant of two equal forces acting at right angle to each other is 1414 dyne .Find the
magnitude of either force.
Q:-5 The sum of the magnitude of two forces acting at a point is 18 N and the magnitude of their
resultant is 12 N. If the resultant makes an angle of 90 o with the force of smaller magnitude ,what
are the magnitude of the two forces.
Q:-6 A river 800 m wide flows at the rate of 5km/h .A swimmer who can swim at 10 km/h in still
water ,wishes to cross the river straight (i) along what direction must he strike (ii) what should be
the resultant velocity ? (iii) how much time he would strike ?
Q:-7 A bob hung from the ceiling of a room by string is performing simple harmonic oscillations.
What will be the trajectory of the bob ,is the string is cut ,when bob is
(i) at one of its extreme positions (ii) at its mean position.
Q:-8 A ball is thrown horizontally and at the same time another ball is dropped down from the top
of tower (i) will both the balls reach the ground at the same time (ii) will both strike the ground
with the same velocity ?
Q:-9 A stone is dropped from the window of a bus moving at 60 km/h .If the window is 19.6 m
high. Find the distance along the track which the stone moves before striking the ground.
Q:-10 Can there be a physical quantity that has no units and no dimensions ?
Q:-11 The velocity of a body which has fallen freely under gravity varies as g p hq ,where g is the
acceleration due to gravity at the place and h is height through which the body has fallen.
Determine the values of p and q.
Q:-12 A body covers one third of its journey with speed u ,next one third with the speed v and last
one third with speed w .Calculate the average speed of the body during the entire journey .
Q:-13 A car accelerates from rest at a constant rate α for some time ,after which it decelerates at a
constant rate β to come to rest .If the total time elapsed is t sec, then calculate :
The maximum velocity attained by the car and
The total distance travelled by the car in terms of β α & t
Q:-14 Can a body have a constant velocity and still have a varying speed ?
Q:-15 Can the displacement be greater than the distance travelled by an object ? Give reason.
Q:-16 Can the direction of velocity of an object change when acceleration is constant?
Q:-17 Is the direction of acceleration same as the direction of velocity?
Q:-18 When an observer is standing on earth, the trees and houses appear stationary to him.
However, when he is sitting in a moving train, all these objects appear to move in backward
direction . Why?
Q:-19 Which of the following velocity or acceleration gives the direction of motion of the body
,Justify your answer by an example.
Q:-20 The velocity –time relation of an electron staring from rest is given by v=kt ,where k=2m/s2.
Calculate the distance traversed in 3 sec.
Q:-21 A car starts from rest ,accelerates at the rate f through a distance s ,then continues at
constant speed for some time t and then decelerates at the rate f/2 to come to rest. If the total
distance is 5sec. Then prove that s=1/2 ft2.
Q:-22 The relation between t and distance x is t= ax2 +bx ,where a and b are constants .Express the
instantaneous acceleration in terms of instantaneous velocity .
Q:-23 A ball is released from the top of tower of height h metre. It takes T sec to reach the
ground. What is the position of the ball in T/3 sec.
Q:-24 Points P,Q and R are in vertical line such that PQ=QR .A ball at P is allowed to fall freely
.What is the ratio of the times of descent through PQ and QR.
Q:-25 Two trains A and B of length 400 m each are moving on two parallel track with uniform
speed of 72 km/h in the same direction ,with A ahead of B.The driver of B decides to overtake A
and accelerates by 1m/s2. If after 50 sec,the guard of B just brushes past the driver of A, what was
the original distance between them .
Q:-26 A train started from rest from a station and accelerated at 2 m/s2 for 10 sec. Then it ran at
constant speed for 30 sec and thereafter it decelerated at 4m/s2 until it stopped at the next
station. The distance between two station is ......................
Q:-27 The motion of a particle is described by the equation u=at .what is the distance travelled by
the particle in first 4 sec.
Q:-28 A ball rolls up a slope .At the end of three seconds its velocity is 20 cm/s ,at the end of eight
sec its velocity is 0. What is the average acceleration from the third to eighth second ?
Q:-29 A body sliding down on a smooth inclined plane slides down 1/4th distance in 2 sec .It will
slide down the complete plane in .......................
Q:-30 A ball is dropped from a bridge 122.5 m above a river .After the ball has been falling for 2
sec,a second ball is thrown straight down after it .What must be initial velocity of the second ball
be so that both hit the water at the same time ?
ASSIGNMENT
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SUBJECT
ENGLISH
1. The three phrases of the author’s relationship with his grandmother before he left the country
to study abroad.
2. Three reasons why the author’s grandmother was distributed when he started going to the city
school.
3. Three ways in which the author’s grandmother spent her days after he grew up.
4. The odd ways in which the author’s grandmother behaved just before she died.
5. The way in which the sparrows expressed their sorrow when the author’s grandmother died.
6. What does the word ‘cardboard’ denote in the poem? Why has this word been used?
7. What has the camera captured?
8. What has not changed over the years? Does this suggest something to you?
9. The poetess’s mother laughed at the snapshot? What did this laugh indicate?
10. What is the meaning of the line “Both wry with the laboured ease of loss”
11. What does ‘this circumstance’ refer to?
12. The three stanzas depict tree different phases. Name them.
13. Which incident has been captured in the snap shot?
14. What do you learn about the poetess’s mother from the photograph?
15. How did the three girls face the camera?
16. What do you think, made poetess’s mother laugh?
17. The poetess’s mother laughs at her past. How does the poet react to her past?
18. Why, do you think, does the poet say nothing about her mother’s death?
19. What impression do you form of the poetess’s mother after reading the poem ‘A Photograph’?
20. “I couldn’t believe what I saw,” says the narrator. What was so unbelievable? Why?
21. What two characters-traits of Mourad are hinted by the narrator in the initial part of the
story?
22. “This was the part that wouldn’t permit me to believe what I saw.” What ‘part’ does the
narrator hint at?
23. What traits of the garoghlanian family are highlighted in this story?
24. How did the narrator react on seeing the horse and Mourad?
25. What conflicting thoughts passed through the narrator’s mind on seeing Mourad on a
beautiful white horse early one morning?
26. What feelings did the sight of cousin Mourad and the horse arouse in the narrator?
27. How did Aram, the narrator, fare in his solo ride?
28. Give a brief account of Mourad’s joy ride.
29. “It was true, then. He had stolen the horse. There was no question about it. He had come to
invite me to ride or not, as I choose.” How did the narrator convince himself to enjoy a horseride
with cousin Mourad?
30. Why does the narrator mention uncle khosrove? Which characteristic features of the man are
highlighted?
31. Give an example to illustrate how uncle khosrove’s impatience sometimes worked to his own
disadvantage?
32. Give examples to show why cousin Mourad was considered one of the craziest members of the
narrator’s family?
33. Why did the narrator suddenly decide to leave in the chapter ‘The Address’?
34. How was the narrator able to recognise her own familiar woollen table-cloth?
35. How did the narrator conclude that she was right?
36. What does the narrator remember about Mrs. Dorling?
37. When did the narrator become curious about her mother’s possession?
38. What did the narrator learn about Mrs. Dorling?
39. What were the reasons did the narrator give to explain that she was mistaken?
40. What is the poet’s feelings towards childhood?
41. What according to the poem, is involved in the process of growing up?
42. What does the poet learn about the existence of Heaven and Hell?
43. How did the realisation of being the master of his own mind helped him?
44. How did the narrator and his grandmother became good friends?
45. How did the sparrows pay their last homage to the grandmother?
46. Describe the friendship between Khushwant Singh and his grandmother.
47. What image of the grandmother emerges from “The Portrait of a Lady”?
48. Imagine that you are Khushwant Singh. Record the changes that came in your relationship
with your grandmother as you grew up from kid to university student.
49. How did the narrator’s grandfather in the portrait?
50. Which thought about the grandmother was often revolting and for whom?
ASSIGNMENT
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SUBJECT
MATHS
1. If x lies in first quadrant and cosx=8/17, then find the value of
Cos(30° + x) + cos(45° - x) + cos(120° - x)
2. Find the general solution of the equation 5cos2x + 7sin2x – 6 = 0.
3. Find the general solution of the equation (√3 – 1) cosx + (√3 + 1) sinx = 2
4. If m sinx = n sin(x + 2α), then prove that tan(x + α) cotα = m + n/m – n.
5. Prove that (tanA + secA – 1)/( tanA- secA +1) = (1 + sinA)/cosA.
6. If cos(α + β)= 4/5 and sin(α – β)= 5/13 , where α lies between 0 and π/4, find the value of
tan2α.
7. If cotx = -5/12 , x lies in second quadrant , find the values of other five trigonometric
functions.
8. Find the values of : (a) cot(-15π/4) (b) tan (19π/3)
9. Find the value of tan(13π/12).
10. Prove that cot4x (sin5x +sin3x) = cotx(sin5x – sin3x).
11. Find the value of tan15°.
12. Find the general solution of : sec22x = 1- tan2x.
13. Find the general solution of: sinx + sin3x + sin5x =0.
14. Prove that: cos2x cosx/2 – cos3x cos9x/2 = sin5x sin5x/2.
15. Find the value of tan(π/ 8).
16. Prove that 2cosπ/13 cos9π/13 + cos3π/13 + cos5π/13 = 0.
17. Prove that: sinx + sin3x +sin5x+sin7x = 4cosx cos2x sin4x.
18. Find sin(x/2), cos(x/2) and tan(x/2) in the following:
tan x = -4/3 , x lies in second quadrant.
19. Prove that: cot x. cot2x – cot2x.cot3x – cot3x.cotx =1.
20. Prove that: cos6x = 32cos6x – 48cos4x + 18cos2x – 1.
21. Prove that: cos4x = 1- 8sin2x cos2x.
22. If (1 + i)2/ (2 + i) = x +iy, then find the value of x+y.
23. If a = cosx + isinx , then find the value of (1 +a)/ (1 – a).
24. Solve the equation |z| = z +1 +2i.
25. If [(1-i)/(1+i)]100 = a +ib, then find (a,b).
26. Write the complex number z = 1 –i/ (cosπ/3 +isinπ/3) in polar form.
27. If z-1/ z+1 is a purely imaginary number (z≠1), then find the value of |z|.
28. Find the complex number satisfying the equation z + √2 |(z+1)| + i=0.
29. If arg(z -1) = arg(z +3i), then find the value of x-1, y. where z= x+iy.
30. Find the multiplicative inverse of each of the complex numbers given:
(a) √5 + 3i
(b) –i
31. Convert the given complex number in the polar form:
(a) – 3 (b) i
32. Solve:
√2x2 + x + √2 = 0
33. Solve:
X2 + x + 1/√2 =0
34. If x +iy = a+ib/a-ib, prove that x2 + y2 =1.
35. Solve: x2 – 2x + 3/2 =0.
36. For any two complex numbers z1 and z2, prove that:
Re (z1 z2) = Re z1 Re z2 – Im z1 Im z2
37. If z1 = 2 – i,z2 = 1+I,find |(z1+z2+1)/(z1-z2+i)|
38. If α and β are different complex numbers with |β| = 1, then find |(β-α)/(1-α β)|.
39. If (1+i/1-i)m = 1, then find the least integral value of m.
40. Find the modulus of (1+i/1-i) – (1-i/1+i).
41. Prove that: (1+x)n ≥ (1+nx), for all natural number n, where x>-1.
42. Prove that 2.7n + 3.5n – 5 is divisible by 24.
43. Prove the rules of expoents: (ab)n = an bn.
44. Prove that: (2n + 7) < (n +3)2.
45. Prove that: 1 + 2+ 3 + ……………+n < 1/8 (2n+1)2.
ASSIGNMENT
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SUBJECT
BIOLOGY
Q.1
Q.2
Discuss the main step in the digestion of protein as the food passes through the
alimentary canal of human beings.
Draw the diagram of human alimentary canal.
Q.3
Q.4
Q.5
Q.6
Q.7
Q.8
Q.9
Q.10
Q.11
Q.12
Q.13
Q.13
Q.14.
Q.15
Write the function of epiglottis.
Name the three region of the human intestine in proper sequence.
What are the functions of liver?
How would it affect digestion, if there is blockade in bile duct?
What would happen if HCl were not secreted in stomach?
Why are villi present in ileum not in stomach?
What is the first step of reaction in TCA cycle?
What is oxidative phosphorylation?
Distinguish between kreb,s cycle and glycolysis.
Give the schematic representation of glycolysis..
Name two opening in plants where exchange of gases takes place.
Distinguish between respiration and combustion.
Name two instances where lactic acid formation takes place.
How do fats enter the respiratory pathway?