HOLIDAYS HOME WORK
CLASS - IX
SESSION 2015 -2016
ENGLISH
Your holidays homework has been designed to ensure that you enjoy
and learn at the same time.
(a) PROJECT WORK:
Read the novel ‘ Three Men In A Boat’& do the following:
 Write about any four important characters .
 Write any four important incidents you liked .
 Word bank :-Write difficult words meanings you come across while reading the novel.(At least 50 words
and arrange them alphabetically.)
Note :-‘The work should be done on A-4 size coloured sheets.’
(b )CREATIVE WRITING:
Use your imagination and creativity and write a self composed poem & present it beautifully .
[ Roll nos. are assigned below in the box.]
ROLL NO.s 1-10
:-
ROLL NO.s 11-20
:-
Ray of Hope / Optimism
ROLL NO.s
:-
Faith and Man
ROLL NO.s 30 onwards :-
Truth is Beauty
21-30
Woman Empowerment
NOTE :- The poem with related pictures should be done on A-3 size sheet.
(c.) Do all the exercises of Module 3 in bbc .
HINDI
MATHS
LINES AND ANGLES
1. An exterior angle of a triangle is 105o , and its two interior opposite angles
are equal, find the equal angles.
2. In the given figure, Prove that angle ADC = angle A + angle B + angle C.
A
D
B
C
3. In the given figure, AD is perpendicular to BC, angle BEC = 100o , angle
DAC = 45o , Find the values of angle ACB , angle EBC, angle ABE
A
E
B
C
D
4. In the figure, if AB parallel to CD, angle APQ = 40o and angle PRD =
118o , find angle PQR and angle BPR.
A
P
B
5.In the figure, if AB parallel to CD, angle EOF =1200 .angle OFC =
450 Determine angle AEO .
R
Q
C
A
D
B
E
O
C
6. If the bisectors of the base angles of a triangle enclose an
angle of 135o, Prove that the triangle is a right angle.
F
D
7. In the figure, the bisectors of angle Q and angle R meet at a
point O .Prove that angle QOR = 900 + ½ angle P
P
O
Q
R
8. ABCDE is a regular pentagon as shown in the figure. Find the
D
value of angle EBA, angle DBE, angle DBC
E
C
B
A
9. Find the angles of a triangle, if the angles are in the ratio 5 : 6: 7.
10. The angle exceeds its complementary angle by 30o , find
the angle.
11.Prove that the bisectors of the angles of a linear pair are at right
angles.
12.If two parallel lines are intersected by a transversal , prove that
the bisectors of two pairs of interior angles enclose a rectangle.
13. Prove that the sum of all external angles of a triangle is 360o.
14. In the given figure, angle EBD = (2x+10)0 , angle DBC =(4x+10)0
angle CBF=(5x+6)0 find the value of x.
D
E
C
B
F
15. One of the four angles formed by two intersecting lines is a
right angle. Show that the other three angles will also be a right
angles.
16. How many sides does a regular polygon have, each angle of
which is of measure 1080
17. Find the values of angle a and angle b if , they are the angles
of a straight line and if a – b = 80o.
18. If two parallel lines are cut by a transversal, prove that the
bisectors of the internal angles on the same side of the
transversal intersect each other at right angles.
19. Locate √41 on the number line.
20. Locate √13 on the number line.
21. If √2 =1.414, then find the value of :
√8 + √50 +√72 +√98
22. If √3 =1.732, then find the value of :
√27 + √75 +√108 -√243
23. Rationalize the denominator of the following :
(i) 16
(ii) 3√5 + √3
√41 – 5
√5 - √3
24. If a =2+√3, then find the value of a – 1/a
25. Given a and b are the rational numbers. Find a and b if:
√2+√3 = a-b√6
3√2-2√3
26. Find the value of
4
−2
(216) 3
+
4
−3
(256) 4
+
4
−1
(243) 5
27. Write in the ascending order 4√5,5√3,10,3√7,6√2
28. If x=2-√3, then find the value of (𝑥 −1/x)3
29. Find two rational numbers between 2√3 and √15
30. Express 0.234234 as a rational number
Modals/projects :
Prepare a project and modal on the following topics.Each topic must
be investigated thoroughly. Relevant information must be collected
and understood. Students will be required to make a presentation
( not necessarily power point show, hand made charts
or simple display will be appreciated.
TOPICS : Explain the use and implementation of maths in
the different fields of our daily life for example :
Maths in nature : Nature uses maths like in human body
shells, pine cones,vegetables ,fruits, arrangement of seeds
etc.
(Roll no 1to 6)
Maths in sports :
(Roll no 7to 12)
Maths in music :
(Roll no 13 to 18)
Maths in sciences :
(Roll no 18to 23)
Commercial mathematics :(Roll no 24 to 29)
Maths in Architecture :
(Roll no 30 to 36)
Maths in patterns
(Roll no 37 onwards)
SCIENCE
PHYSICS
Solve following questions in separate note book
1.
Fill in the Blanks
a
72 km/h
b
15 m/s
c
50 km/min
d
100 km/h
=
=
=
=
___________m/sec
___________km/h
___________m/sec
___________m/min
2.
A car travels 30km at a uniform speed of 40 km/h and the next 30 km at a uniform speed of 20 km/h.
Find its average speed.
3.
A scooter acquired a velocity of 36 km/h in 10 seconds just after the start. It takes 20 seconds to stop.
Calculate the acceleration in the two cases.
4.
A train 100 meters long moving on a straight level track passes a pole in 5 seconds. Find
a)
the speed of the train
b)
the time it will take to cross a bridge of 500 meters long.
5.
A motorcycle moving with a speed of 5m/s is subjected to an acceleration of 0.2 m/s2
Calculate the speed of motorcycle after 10 seconds and the distance travelled in that time.
6.
A car acquired a velocity of 72 km/h in 10 seconds starting from rest. Find
a)
the acceleration
b)
average velocity
c)
the distance travelled in this time
7.
The given displacement time graph shows the position of an object at different times. Calculate the
velocity of the object as it moves during
a)
2 to 5 sec.
b)
5 to 7 sec.
c)
7 to 10 sec.
Displacement (m)
3.5
3
2.5
2
1.5
1
0.5
0
1
2
3
4
5
6
7
8
Time (s)
9
10
11
8.
Study the velocity time graph given in figure and calculate
a)
b)
c)
d)
the acceleration during 1 to 5 sec.
the acceleration during 5 to 9 sec.
the distance covered in 9 sec.
average velocity between 5 to 9 sec.
Velocity (m/s)
25
20
15
10
5
0
1
2
3
4
5
6
7
8
9
Time (s)
9.
In the above graph find out distances covered in
a)
2 nd second
b)
last two seconds
10.
An object is moving on a circular track of radium 21cm. Calculate its distance and
displacement after
a)
1 round
b)
3.5 rounds
c)
5.25 rounds
11.
An electron moving with a velocity of 5 x 104m/s, enters a uniform electric field and acquires uniform
acceleration of 104 m/s2 in the direction of initial motion.
a) calculate the time in which electron acquires a velocity double of its initial velocity
b) how much distance the electron covers in this time.
12.
Which physical quantities are represented by
a) Slope of displacement – time graph
b) Slope of velocity- time graph
c) Area under the velocity- time graph
13.
Derive velocity-time relation using graphical method.
14.
Derive position- time relation using graphical method.
15.
Derive position -velocity relation using graphical method.
Make the following projects roll no. wise
1.
Make model of Odometer.( if possible make it working)
2.
3.
Make model of speedometer.( if possible make it working)
( Roll no. 15-28)
Check your father while driving the car. Note down speed after every 5 seconds. Draw
speed time graph on a A3 size sheet beautifully.
( Roll no. 29-42)
CHEMISTRY
A - Make a detailed project on the following topics:1. Application of evaporation in our daily life.
Roll No.(1—14)
( Roll no. 1-14)
2. Application of isotopes.
3. Chemicals used in our domestic purpose.
B - Answer the following questions:-
Roll No.(15—28)
Roll No. (29—42)
1. Explain why solids are usually heavy and gases are light.
2. Some substances cannot exist in the gaseous state: others cannot exist in the liquid state, and some
cannot exist in the gaseous or the liquid state. Give suitable examples, justify the above statement.
3. Why is dry ice stored under high pressure?
4. Ordinary water boils at 1000C. Can it be made to boil at 950C or 1050C?
5. Two cubes of ice are pressed hard between the palms, when the pressure is released, the two cubes
join together. Explain.
6. Of three states of matter, only gases are said to have no open surface. Explain.
7. Why does cooking in vessels open to atmosphere take long time in mountains?
8. Both boiling and evaporation convert a liquid into vapours, What is the difference between two
processes?
9. Name any other advantage of using pressure cooker instead of cooking in open vessels.
10. You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash.
What steps would you take to dry it faster?
11. It is a hot summer day; Priyanshi and Ali are wearing cotton and nylon clothes respectively. Who
do you think would be more comfortable and why?
12. What is the relation between boiling point and intermolecular forces of attraction between the
particles of a liquid.
13. Sidak was making tea in a kettle. Suddenly she felt intense heat from the puff of steam gushing out
of the kettle. She wondered whether the temperature of the steam was higher than that of the
water boiling in the kettle. Comment.
14. Shelly and her mother went to a shop to buy some cooling equipment for her house
to beat the
summer heat. The shopkeeper showed them two types of cooling equipments- a desert cooler and
an all weather air conditioner. The desert cooler was much cheaper than the air conditioner.
Shelly’s mother wanted to buy the desert cooler as it was much cheaper. Now answer the following
questions:
a. As a student of science, why would you suggest to Shelly’s mother to buy expensive air
conditioner? Give two reasons.
b. What are the values associated with the above decision?
15. What are the factors that are responsible for change of state of
a substance?
16. Arrange in order indicated for solid, liquid and gas
–
increasing order
b. Empty spaces in between particles –
decreasing order
c. Tendency to flow
–
decreasing order
d. Thermal expansion
–
increasing order
a. Effect of pressure
17. Why is butter wrapped in wet cloth if refrigerator is not available in summers?
18. Small quantities of water and ether are placed on both the palms. Which of the two would
experience the cooling?
19. Coconut oil freezes in winter but mustard oil does not do so at atmospheric preesure.What could
be state of these liquids at reduced pressure.
20. Three states of matter are interchangeable. Comment.
C - Choose the correct option:1. Camphor is purified by the process of –
a. evaporation b. distillation c. sublimation
d. filtration
2. LPG is used in the kitchens in our homes in thea. Solid form
b. compressed form c. gaseous form d. none.
3. Which of the following is not fluid –
a. water
b. air
c. sand
d. sharbat
4. On Kelvin scale 0oC is equal to –
a. 273 K b. -273 K
c. 0 K
d. 100 K
5. SI unit of temperature is –
a. Kelvin
b. Celsius
c. Fahrenheit d. Pascal
6. Dry ice means –
a. solid SO2
b. solid water
c. solid CO2 d. solid CO
7. Condensation is a process which involves conversion of –
a. solid into liquid
b. liquid into vapourc. vapour into liquid
d. liquid into solid
8. During evaporation, the particles of liquid evaporate from –
a. The bulk of liquid b. surface only
c. the surface and bulk of liquid
d. none of them.
9. Which of the following will not sublime –
a. Camphor b. ammonium chloride
c. bromine
d. iodine?
10. A state of matter which has a definite shape and fixed volume –
a. Solid
b. liquid
c. gas
d. none of these.
11. A state of matter which does not have a definite shape but has definite
volume –
a. Solid
b. liquid
c. gas
d. none of these.
12. A state of matter which neither has neither definite shape nor definite volume
a. Solid
b. liquid
c. gas
d. none of these.
13. The states of matter can be changed by changing –
a. Temperature
b. pressure
c. both (a) and (b)
d. none of these.
14. The rate of evaporation does not depend on –
a. Temperature
b. humidity
c. pressure
d. speed of wind.
15. Which of the following is accompanied by cooling –
a. Vaporization
b. evaporation c. condensation
d. none of these.
16. A bulk phenomenon in which particles from whole of the liquid change into
vapour state is called a. Boiling
b. cooling
c. melting
d. none of these.
17. The amount of heat energy required to change 1 kg of solid into liquid at its melting point is called
–
a. Melting point
c. boiling point
b. latent heat of fusion
d. latent heat of vaporization.
18. The amount of heat energy required to change 1 kg of liquid into solid at its boiling point is called
–
a. Melting point
b. latent heat of fusion
c boiling point
6+
54
5
BIOLOGY
IAnswer each question below related to parts of plant and animal cells & their structures based on the clues
given.
1. It has a living, flexible and thin structure. It possesses fine pores, making it semi-permeable. It is chiefly
composed of lipo-proteins.
2. It has a non-living, rigid structure. It is freely permeable and is chiefly composed of cellulose.
Answer:
3. It contains one or two centrioles, and is surrounded by microtubules or the centrosphere. It is situated near the
nucleus.
Answer:
4. It is a green-colored plastid. It contains a pigment called chlorophyll.
Answer:
5. It is a plastid that is colored differently in different cells. It contains pigments such as xanthophyll (yellow in
color) and carotene (orangish-red in color).
Answer:
6. It contains most of the cell organelles. It is composed of a mixture of water and soluble organic & inorganic
compounds.
Answer:
7. It is made up of stacks of flattened membranous sacs. It mainly consists of vesicles, vacuoles and tubules.
Answer:
8. It is a colorless plastid. It contains starch.
Answer:
9. It is a membranous sac budded off from the golgi apparatus. It contains several types of enzymes.
Answer:
10. It has a double-walled structure. Its inner wall is produced into folds known as cristae. It is generally
sausage-shaped.
Answer:
11. It has numerous pores, making it semi-permeable. It is the covering of the nucleus of the cell.
Answer:
12. It is round in shape. It is contained in the nucleus of the cell.
Answer:
13. It is chiefly composed of a dense fluid. It contains chromatin fibres, which are made up of DNA
(Deoxyribonucleic acid).
Answer:
14. It is the largest cell organelle. It has a dense structure. It is spherical in shape.
Answer:
15. It has a small, dense and granular structure. It is spherical in shape and is single-walled.
Answer:
16. It consists of an irregular network of double-walled tubular membrane. It has ribosomes attached to it.
Answer:
17. It has a vesicular structure. It is formed when the substances produced in the endoplasmic reticulum are
further processed in the golgi apparatus.
Answer:
18. It consists of an irregular network of double-walled tubular membrane. It does not have ribosomes attached
to it.
Answer:
19. It is a clear space filled with water or other substances in the form of solutions. It has a covering called
tonoplast.
II each question below related to parts of plant and animal cells & their functions based on the clues
given.
1. It provides shape to the cell. It is semi-permeable, regulating the entry and exit of substances, namely solutes
and ions.
Answer:
2. It provides protection, shape and rigidity to the cell. It is freely permeable, allowing substances in the form of
solutions to enter and leave the cell without any hindrance.
Answer:
3. It initiates and regulates cell division. It also helps in forming spindle fibres, with the help of asters.
Answer:
4. It is a plastid, containing a pigment called chlorophyll. This chlorophyll captures energy from sunlight and
helps in the manufacture of food by the process of photosynthesis.
Answer:
5. It is a plastid, containing pigments such as xanthophyll (yellow in color) and carotene (orangish-red in color).
These pigments impart color to flowers and fruits of plants.
Answer:
6. It is the house of all metabolic activities and functions in the cell. In other words, it contains most of the cell
organelles, each of which perform a specific function.
Answer:
7. It provides support to the cell. It also helps in the synthesis and transport of proteins and fats.
Answer:
8. It synthesizes and secretes certain substances, namely hormones and enzymes. It also helps in the formation
of acrosome of sperm.
Answer:
9. It is a plastid. It helps in the storage of starch.
Answer:
10. It performs intracellular digestion. It also helps in destroying foreign substances.
Answer:
11. It is the site of ATP (Adenosine triphosphate) synthesis. It also synthesizes respiratory enzymes.
Answer:
12. It is semi-permeable, allowing substances to enter and leave the nucleus of the cell. It also provides
protection to the nucleus of the cell.
Answer:
13. It synthesizes proteins by producing and storing RNA (Ribonucleic acid). At the same time, it orders
ribosomes to synthesize proteins.
Answer:
14. It contains chromatin fibres, which are made up of DNA (Deoxyribonucleic acid). After cell division takes
place, these chromatin fibres undergo certain structural changes, and are called chromosomes. These
chromosomes carry the hereditary information of the genes.
Answer:
15. It controls and coordinates all the activities and functions of the cell. It plays a vital role in cell division.
Answer:
16. It is known as the 'site of protein synthesis in the cell', and synthesizes proteins. It is chiefly composed of
RNA (Ribonucleic acid).
Answer:
17. It helps in the storage of water and several other substances, namely food, waste products and pigments. It
also provides turgidity to the cell.
III A Label the following from 1-14
III BLabel the following from 1-14

IV Fill in the blanks
1. The lowest level of organization is the _______.
Answer:
2. The green color of leaves is due to the presence of the _______ pigment.
Answer:
3. Which of the following cell organelles is found in the plant cell but not in the animal cell?
Answer:
4. The network of convoluted tubules is called the _______.
Answer:
5. Secretory granules are formed by the _______ of the animal cell.
Answer:
6. _______ are known as the 'sites of intracellular digestion'.
Answer:
7. _______ consist of enzymes, which help in digestion.
Answer:
8. _______ are known as the 'power-houses of the cell'.
Answer:
9. The reproduction of the cell is controlled by the _______.
Answer:
10. The cell membrane is also known as the _______ membrane.
Answer:
11. _______ are known as the 'sites of protein synthesis in the cell'.
Answer:
12. Ribosomes are found attached on the _______.
•
Answer:
13. The _______ color of flowers and fruits is due to the presence of the xanthophyll pigment.
Answer:
14. A group of cells performing a specific function constitute a tissue.
• True
• False
Answer:
15. The outermost covering of the plant cell is known as the cell membrane.
• True
• False
Answer:
Do the following models as per the roll no.
a.1 to 10 –prokaryotic cell
b. 11 to 20- golgi apparatus
c. 21 to 30 – chloroplast
d. 31 to 41 – mitochondria
Use biodegradable materials only and no thermocol
SOCIAL SCIENCE
1. Make a project report on Germany under Nazis (Hilter)
Points to be covered:
o Introduction
o Rise to power
o Social and economic condition of Germany during 1920-1939
o Nazi Ideology
o Holocaust
o Fall of Nazism
2. Make a Collage on ‘Earth Quake’ recently occurred in Nepal. Make a small report on the effect and impact on
the life and livelihood of the people.
3. Make flash cards to show the features promoting the Democracy in the world. Label the flash
cards/ give appropriate slogans.
COMPUTER SCIENCE
Make a Power Point Presentation on “ Be smart on internet”.
(Roll no. 1 - 10)
Make a Power Point Presentation on “Latest Technologies used to transfer data.(Roll no.11-20)
Create a Poster on “Mind Map of website (online shopping/Booking Movie Show) (Roll no.-21-30)
Create a scrap book on “Type of computers such as Super,Micro computer” (Roll no. 31 & above)
French
Faites les suivantes dans le cahier




Écris une message / decries une image
- Lundi
Lisez et répondez une compréhension- Mercredi
Écrivez une recette indienne / française
- Vendredi
Fais 10 phrases (Grammaire)
- Samedi
*Écris une carte postale au votre professeur en décrivent comment vous passerez vos
vacances ( Le 08 Juin 2015).
*Choississez une région de France et fais un collage sur son climat, relief,économie, cuisine,
monuments etc.
ART & CARFT
T-Shirt painting (color of T-shirt is black/white)