SUMMER VACCATION HOLIDAYS HOME WORK
CLASS IX (2017-2018)
Science:
Chemistry- Matters in our surroundings.
Ques-1. Camphor disappears without leaving any residue. Explain.
Ques-2. Why do we feel cool when we touch of ice?
Ques3-Convert the following:
a) 573 K
b) 36 deg C
c) 373 deg C
Ques-4. Both the process of evaporation and boiling involves the change of state from liquid to gas but still
they are different from each other. Justify.
Ques-5. Why is Kelvin considered as the best scale for measuring the temperature?
Ques-6. How can you show that evaporation causes cooling?
Ques-7. What is the significance of boiling point and melting point of a substance?
Ques-8. When we put CuSO4 in water, after sometime we find the soln, turns blue. Why? Also, on heating it
what change will occur?
Ques-9. How can you justify that table is solid?
Ques-10. Arrange the following in decreasing order of force of attraction: Water, Salt, Oxygen. Also, state the
reason.
Ques-11. State characterstics of matter demonstrates by :
a) Diffusion.
b) Brownian motion.
Ques-12. When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance spreads in the
whole room quickly. Which characterstic of the particle of matter is illustrated by this observation?
Ques-13. The boiling point of alcohol is 78 deg C. What is this temperature on Kelvin scale?
Ques-14. The Kelvin scale temperature is 0 K. What is the corresponding Celsius scale temperature?
Ques-15. What is latent Heat of fusion?
Ques-16. Define latent heat of vaporization?
BIOLOGY- Cell- The unit of life.
Ques-1. State the function of chromosome in a cell.
Ques-2. Write two similarities and one dissimilartity between mitochondria and plastid.
Ques-3. Name the cell organelle that you would associate with elimination of old and worn out cells.
Ques-4. List two types of plastids and state one function of each.
Ques-5. Name two cell organelles that contains their own genetic material.
Ques-6. Division of labour exists even at intracellular level, justify the statement by giving two examples.
Ques-7. Identify and name the following cell structure:
a) the undefined nuclear region of prokaryotic cell.
b) Site of energy release inside the cell.
Ques-8. a) List any two structural differences and two similarities between animals cell and plant cell.
b) What would happen if an animal cell is kept is distilled water for 24 hours.
Ques-9. When a living plant cell loses water through osmosis, there is contraction of the content of the cell
away from the cell wall. What is the phenomenon called?
Ques-10. a) Write two points of difference between nuclear region of bacterial cell and animal cell.
b) Which structure present in the nuclear region of living cell bears genes?
Ques-11. List any two single celled organism.
Ques-12. Draw a diagram of plant cell and label its any two parts.
PHYSICS- Motion.
Ques-1. What is meant by the statement ‘Rest and motion are relative terms’? Give example to show it.
Ques-2. Explain whether the walls of a classroom are at rest or in motion.
Ques-3. Define scalar and vector quantities.
Ques-4. Identify the following as scalar or vector quantities: Mass, velocity, speed, length, distance,
displacement, temperature, force, weight, power, work and energy.
Ques-5. The school of a boy from his home is 1 km to the east. When he reaches back home home. he says
that he had traveled 2km distance but his displacement is zero. Justify your answer.
Ques-6. Under what condition, the average speed is equal to the magnitude of the average velocity.
Ques-7. Can the average speed of a moving body be zero.
Ques-8. Can the average velocity of a moving body be zero? State examples.
Ques-9. A car covers a distance of 5km in 20 mins. Find the velocity of the car in a) km/min b) m/s c) m/mim
d)km/hr.
Ques-10. A train is moving with a velocity of 45km/hr. Calculate the distance traveled by it in 1h hr, 1 min and
1 second.
Ques-11. An object P is moving with a constant velocity for 5 mins. Another object Q is moving with changing
velocity for 5 mins. Out of these two objects ,which one has acceleration? Explain.
Ques-12. Can an object be accelerated if it is moving with constant speed? If yes, explain giving examples.
Ques-13. a) When do you say that an object has positive acceleration?
b) When do you say that an object has negative acceleration?
Ques-14. State which of the following situations are possible and give example of each of these:
a) A body moving with constant acceleration but with zero velocity.
b) A body moving with a constant acceleration in vertical direction.
c) A body moving with a constant speed in an accelerated motion.
Ques-15. What is a reference point?
Ques-16. Name the 2 physical quantities which can be obtained from obtained from velocity time graph.
Ques-17 An electric train is moving with velocity of 120 km/hr. How much distance will it cover it 30 seconds.
Ques-18. Give differences between linear motion and circular motion.
Ques-19. A body moves around the sun with constant speed in circular path. Is the motion of the body
uniform or accelerated?
Ques-20 Name the physical quantity which remains constant during uniform circular motion.
Ques-21. Name the physical quantity which changes uniform circular motion.
Ques-22. An object has moved through distance. Can it have zero displacement? Support your answer with
an example.
Ques-23 A physical is measured- 10m/s. Is it speed or velocity?
Ques-24. A car is moving with a velocity of 10m/s. The driver of the car decides to overtake the bus moving
ahead of the car. So the driver of the car accelerates at 1m/s2 for 10 seconds. Find the velocity of the car at
the end of 10 seconds. Also, find the distance traveled by the car while accelerating.
Social science
Que.1Map work book a) political map of India
b) physical map of India
c) rivers of India
Que.2Write all exercise question and learn them .write 10 extra question of each chapter taught (long answer
type)
Que.3 What is Disaster management? Flood, Cyclone ,Earth quake, Land slide ,Drought .
Que.4Short note Ona) role of women in French revolution
b) slavery system
c) women revolution
d)Swami Vivekanand
Que.5Womens are less educated than men .Why?
Que.6Prepare a social science dictionary including 100 glossary word
हिन्दी
1.अऩठित गदमयॊश/ऩदमयॊश –(2-2)
2.ननफॊध – क)स्वदे श प्रेभ।
ख)भ्रष्टयचयय – कययण औय ननवययण।
ग)ऩमयावयण प्रदष
ू ण।
3.अनौऩचयरयक ऩत्र–
छयत्रयवयस भें यहने वयरेअऩने छोटे बयई सॊजम को व्मयमयभ के रयब फतयते
हुए ऩत्र लरखखए।
औऩचयरयक ऩत्र – अऩने ववदमयरम के प्रधयनयचयमा को ऩत्र लरखखए,जजसभें अऩने सहऩयिी के
प्रशॊसनीम औय सयहलसक कयमा के लरए उसे सम्भयननत कयने कय अनयु ोध ककमय गमय हो ।
4.सयखखमयॉ औय सफद,दो फैरो की कथय,इस जर प्ररम भें आठद ऩयि एवॊ सभयस व उऩसगा औय
प्रत्मम मयद कयने हैं।
5.ऩरयमोजनय कयमा :-प्रेभचॊद कय चचत्र सठहत जीवन ऩरयचम औय स्वयधीनतय सॊग्रयभ भें उनकय
मोगदयन एवॊ उनकी यचनयओॊ की सच
ू ी लरखखए।(पयईर भें )
ENGLISH
1. Revise the syllabus taught in the month of April and May.
2.Read the novel “ Three Men in a Boat” and note the following in your scrapbook:
Title of the novel
Index
Short introduction of the novel
Information about the author
Character sketch of any two characters of the story
3. Design an English magazine with
Attractive cover page
Name of the magazine
An article on ‘Cleanliness’
A moral story ( draw related pictures)
Five jokes
About any great personality
4. Read newspaper everyday.
5.Read the chapter ‘A Dog named Duke’ and write its summary
6. Make dairy entry if you visit to a place during your vacation.
Mathematics
1. Determine whether the indicated numbers are zeroes of the given polynomial?
 g(x)=3x2 – 2, x=2/√ 3,x= - 2/√ 3
 f(x)=x3 – 6x2 +11x-6 , x=1 , x=3
2. If p(x) = x2 – 4x +3, find the value of p(2) - p(-1) + p(1/2) ?
3. Divide 3x4 -4x3 – 3x -1 by x-1 and find its quotient and remainder?
4. Without Actual division , prove that x4 + 2x3 - 2x2 +2x+3 is exactly divisible by x2 +2x-3 ?
5. Find the values of a and b, if x2 -4 is a factor of ax4 +2x3 -3x2 +bx – 4 and hence factorise
it completely.
6. Find the values of x3 - 8y3 - 36xy – 216 when x=2y+6.
7. If x+2y=10, xy =15, find x3 +8y3.
8. Prove that (a+b)3+(b+c)3+(c+a)3 – 3(a+b)(b+c)(c+a) = 2(a3+b3+c3-3abc)
9. If 2(a2+b2) = (a+b)2 , then prove that a=b.
10.Using suitable identity , find the value of
873 + 133/ 872 -87x13+132
1. Find the value of a and b if:
(7+3√5/3+√5) - (7-3√ 5/3-√ 5) = 𝑎 + √ 5𝑏
2. If a=2+√ 3 + √ 5 and b= 3+√ 3 − √ 5 , find
(a-2)2 + (b-2)2
3. Simplify by rationalizing the denominator
2/(√ 5 + √ 3) + 1/(√ 2 + √ 3) – 3/(√ 5 + √ 2)
4. Simplify the following
1. 22/3 x 21/5
2. 71/2 x 81/2
5. Simplify the following:
1)
(5+√ 7)x(2+√ 5)
2)
(√ 5 − 2)/(√ 5 + 2) - (√ 5 + 2)/(√ 5 − 2)
6. Find the value of x in 24x25= (25) x
7.if x = √ 7/5 , and 5/x = p√ 7 , then what
is the value of p ?
8.represent √ 8 on the numbr line.
9.Find three rational numbers between 1/3 and 1/2.
10.Express 0.159999… in p/q form where p,q are integers and q≠0.