WINTER BREAK HOMEWORK CLASS 9 MATHS : SAMPLE ...

WINTER BREAK HOMEWORK

CLASS 9 MATHS : SAMPLE PAPER NO 1

WINTER BREAK HOME WORK

CLASS 9 MATHS : SAMPLE PAPER -2

CLASS-IX (C & D) SANSKRIT-HOLIDAY HOME-WORK 1. उ राख ड य े णीय- तलाना ंिच ािण सं ,

िच ाधा रत-वा यािन ( सं कृतेन) लेखनीयािन ।

( for CBSE-Project , in separate file )

( यूनाित यूनं प िच ाणां कृत े।)

2. आ लभाषात: / िह दीभाषाया: प दश(15) -वा यािन

सं कृतेन अनुवाद: करणीय: । ******

K V DRDO BENGALARU

WINTER HOLIDAY HOME WORK [2020-21]

CLASS-9 SUBJECT- SCIENCE

1.What is Tyndal effect ? Explain with example.

2 Compare Plant cells and animal cell.

3 Draw the Label Diagram of animal cell.

4 Why the lysosome is know as scuicidal of the cell.

5 What is cell division ? Write a short notes on meosis cell division.

6 Write the full formula of a. Sulphuric Acid , b. Sodium Hydroxide c. Calcium Carbonate,

d. Zinc oxide. e. Hydrogen Iodide ,f. Barium Nitrate , g. Alluminium Oxide.

7. A person drive a car and reaches to the destination after covering 100 Km in 2

hours.Find the speed of car in m/sec.?

8. Write notes on - a) AIDS b) Communicable Disease. c) Xylem, d) Phloem

9. Derive the equation KE= ½ mv² .

10. A train is running at a speed 32 Km / h and the driver applies the break for 10 second

then the train reaches to the speed of 12 Km/h . find the(retardation) acceleration and

distance covered by the train?

Sub: - Science

ART-INTEGRATED PROJECT TOPICS FOR CLASS X A

STATE : KARNATAKA

TOPICS

1 Biodiversity in Karnataka

2 Flora of the state of Karnataka

3 Wildlife of the state of Karnataka

4 National parks in Karnataka

5 Tribal life in Karnataka name of the tribes and livelihood

(Choose any one topic for project include write up and

pictures and present beautifully also includes data charts

etc)

6. Make a warli painting to show tribal life and wild life

which is created by north sahyadri range of maharastra

and Karnataka. (For everyone)

HEADS OF ASSESSMENT

1. Explanation

2. Presentation

3. Data collection

4. Exploration, creativity

5. Conclusion

PAGE CONTENT COVER PAGE

Your name,class,section,roll no.,gmail ID, mobile no, Title of Project

1 Table of content (page title) 2 Brief discussion of project, How would you

proceed. 3- 10 Procedure with picture 11 Importance of the content 12 Conclusion /result 13 List of resources 14 Acknowedgement Last page

Declaration “ This Project is done by me independently” Sign by student

Make your project as per given content properly

Last date of Submission : 1-sep-2020

Time: 3 hrs

Total Marks: 80

General Instructions:

(i) The question paper comprises of five sections – A, B, C, D and E. You are to

attempt all the sections.

(ii) All questions are compulsory.

(iii) Internal choice is given in sections B, C, D and E.

(iv) Questions numbers 1 and 2 in Section - A are one mark questions. They are to

be answered in one word or in one sentence.

(v) Question numbers 3 to 5 in Section- B are two marks questions. These are to

be answered in about 30 words each.

(vi) Question numbers 6 to 15 in Section-C are three marks questions. These are

to be answered in about 50 words each.

(vii) Question numbers 16 to 21 in Section-D are 5 marks questions. These are to

be answered in about 70 words each.

(viii) Question numbers 22 to 27 in Section- E are based on practical skills. Each

question is a two marks question. These are to be answered in brief.

SECTION – A

1. Mention the various methods of inter-crop hybridisation.

[1]

2. Which type of farming system yields healthier grains?

[1]

SECTION – B

3. Why does air pollution increase during winter?

[2]

OR

Explain how air moves over sea and land during day and night.

4. Mention the elements and the ratio by mass of elements present in:

[2]

a. Ammonia

b. Carbon dioxide

CBSE Class 9 Science Sample Paper Set 1

5. Identify the energy involved in the following activities.

[2]

a. Winding a key in a toy

b. A running fast bowler

c. A falling apple

d. A stretched bow

SECTION – C

6. Differentiate between the following:

[3]

a. Acceleration due to gravity and gravitational force

b. Buoyancy and upthrust

7. Explain any two methods of biological manuring.

[3]

OR

Explain cross-breeding of cattle with an example.

8. Mention the rules to be followed according to Bohr and Bury’s atomic model

for writing the number of electrons in each orbital shell.

[3]

9. Give reasons:

[3]

a. Tides rising above the surface level of the sea

b. Satellites can circle in a circular orbit

c. A concert hall’s ceiling is mostly curved.

10. Explain how the second law of motion influences a cricket fielder while

catching a ball. [3]

11. Calculate the potential energy of an object at rest weighing 5 kg when placed

at a height of 5 m above the level of the ground. Given gravitational constant

g = 9. 8 ms-2. [3]

OR

A 40 W tube light is used for 8 hr/day. Find how much units of energy is

consumed by the tube light in one day?

12. Calculate the mass of 0.125 mol NaOH.

[3]

OR

Write the chemical formula of the substances formed:

a. Ammonium dichromate

b. Aluminium sulphate

c. Calcium phosphate

d. Iron (III) oxide

13.

[3]

a. Define cellular diffusion

b. Name any two elements that are transported through cellular diffusion

c. Mention any two benefits of cellular diffusion

14. Explain the action of the antibiotic penicillin in disease prevention.

[3]

15. Although there is huge increase in carbon dioxide production by various

human activities, the atmospheric carbon dioxide level is amounted in small

quantities like around 409 parts per million. Explain the situation and its

consequences. [3]

SECTION – D 16.

[5]

a. Define the term with an example:

i. Symbiosis

ii. Parasitism

iii. Autotrophs

b. Identify the plant group with:

i. Stems and leaves but with hidden reproductive organs

ii. Stems and leaves but with no vascular system for conduction

17. [5]

a. Calculate the acceleration required to push a box weighing 3.5 kg with 2 N

of force.

b. A crate weighing 45 kg was pushed on the floor to about 15 m with a force of

20 N. Calculate the work done.

OR

a. There is a change in velocity observed from 10 m/s to 15 m/s when a force of

300 N is applied on a body. Calculate the mass of the body?

b. What would be the force required to accelerate the speed of a vehicle weighing

1500 kg and moving at a speed of 10 ms-2?

18. Explain saturation and solubility of a solution. [5]

OR

a. How do isotopes differ from isobars?

b. Mention two medicinal uses of isotopes

c. Represent the atomic number and mass number of isotopes of chlorine and

carbon

19. [5]

a. What should be the distance from the cliff if a person needs to hear the echo

of his voice after 5 s, provided speed of the sound is 345 ms-1.

b. What would be the velocity of a wave with frequency of 20 Hz and wavelength

of 20 m? Mention if the frequency of the sound will be audible here?

20. [5]

a) Mention the function of the following cell organelles:

i. Golgi apparatus

ii Mitochondria

b) i. Identify the cell organelles named A and B in the following animal cell

diagram.

ii. Differentiate between A and B

iii. Mention one function of each A and B

OR

a)

i. Draw a neat labeled diagram of a prokaryotic cell

ii. Explain how prokaryotes differ from eukaryotes with respect to cell division

b) i. Draw a neat labeled diagram of a phloem cell.

ii. Name the phloem cell that is tubular in structure

21. The canopy of a forest and milk, both exhibit Tyndall effect, but sugar solution

does not. Explain why.

[5]

SECTION – E 22. [2]

a. Identify the following diagram and label the parts A and B.

b. What type of muscle cell is this?

23. [2]

i. Identify the two organisms as seen under a microscope

ii. Name the phylum to which they belong and mention one of its features.

24. [2]

When 4.5 g of sodium carbonate reacts with 5 g of acetic acid, the products formed

are 6.5 g of sodium acetate, 0.6 g of water, and 2.4 g of carbon dioxide. Mention

the law which this reaction abides and explain how?

OR

Identify the pure substances and mixtures:

a) Tin

b) Ice

c) Carbon dioxide

d) Milk

25. Provide a balanced equation for the reaction between lead nitrate and sodium

chloride. [2]

26. Two bodies A and B weighs 2 kg each. When the body A was dropped into a

container containing water, it displaced equal amount of weight of water.

Similarly, when body B was dropped into the container, it displaced more than

its weight of water. Which of the two bodies will sink and which will float and

explain why? [2]

27. When a true solution of sugar was formed what would be its transparency and

stability properties?

[2]

OR

While separating two immiscible liquid with oil and water, what would be

observations?

Duration: 3 hrs Total Marks: 80


● The question paper is divided into five sections – A, B, C, D and E.

● All questions are compulsory and you should attempt all sections.

● In sections B, C, D and E you have an option to answer any one question.

● Questions 1 and 2 in Section A carry one mark.

● Question 3 to 5 in Section B carry two marks.

● Question 6 to 15 in Section C carry three marks.

● Question 16 to 21 in Section D carry five marks.

● Question 22 to 27 in Section E are based on practical skills. Each question

carries two marks. You can answer the questions in brief.

Section A

1. Describe the arrangement of particles in solids, liquids and gases? [1]

2. What do you understand by the term nitrogen cycle? [1]

Section B

3. Are plastids present in animal cells? Name the two common types of plastids.

[2]

OR

What kind of mixture is a solution? Name the different constituents of a solution.

4. Is it possible to have zero displacements even if an object covers a certain

distance? Justify your answer. [2]

OR

Who framed the law of gravitation? State the law.

5. Give two conditions that are required for a human to be in good health. [2]


Section C

6. State three key postulates of Dalton’s atomic theory [3]

OR

Name the three different models of an atom and the ones who formulated them.

7. Is blood a connective tissue? Give two important functions of blood. [3]

8. What happens to the kinetic energy of a falling object on hitting the ground? [3]

9. Describe the three characteristics of sound [3]

10. Name and describe the process to separate a mixture of two miscible liquids. [3]

11. Define; a. Valency b. Atomic Number c. Mass Number [3]

12. Draw and label the different parts of a cell. [3]

13. State three ways in which diseases can spread along with an example. [3]

OR

A bodybuilder lifts a dumbbell of 10 kg and raises it 2 m above the ground. Calculate

the work done by him on lifting the weight.

14. State three reasons why the atmosphere is essential for life. [3]

15. Explain what is genetic manipulation in crops? List out its benefits.

Section D

16. Are plant and animal tissues the same? Name the different types of animal

tissues and describe the key function of each tissue. [5]

OR

Give five differences between a plan and an animal cell.

17. Name the different divisions of the Kingdom Plantae. Also, describe their major

characteristics along with an example for each. [5]

18. A boy 60 kg hops with a horizontal velocity of 5 ms-1 on a stationary skateboard.

The skateboard weighs 4 kg. Find out the velocity when the board starts rolling?

The condition given here is that any external unbalanced force is absent.

19. Why is the law of gravitation said to be universal? Given the equation for

universal gravitation. Explain clearly the significance of this law. [5]

20. What do you mean by greenhouse effect? Name the factors responsible for this

effect and also suggest some prevention measures. [5]

21. Give five differences between an atom and a molecule [5]

Section E

22. Take a bowl of water containing some amount of oil in it. How will you separate

the two. [2]

23. Take some items like a bark of a tree or a bone and identify what kind of tissues

are present in it. [2]

24. Water can exist in all the three states solid, liquid and gas. Conduct an

experiment and describe what happens to the particles during the change of

state? [2]

OR

While observing different kinds of seeds how will you distinguish between a

dicot and a monocot seed?.

25. In our day to day life, we experience or come across different types of motions.

Can you give an example of the motion when;

a. The acceleration is positive and in the direction of motion.

b. The acceleration is uniform or the rate of acceleration is constant.

26. When you stretch a rubber band what is the energy generated and lost? [2]

27. Can you determine who has a higher pitch, a sparrow chirping or a tiger roaring?

Justify your answer. [2]

Duration: 3 hrs

Total Marks: 80


● The question paper is divided into five sections – A, B, C, D, and E.

● All questions are compulsory and you should attempt all sections.

● In sections B, C, D, and E you have an option to answer any one question.

● Questions 1 and 2 in Section A carry one mark.

● Question 3 to 5 in Section B carry two marks.

● Question 6 to 15 in Section C carry three marks.

● Question 16 to 21 in Section D carry five marks.

● Question 22 to 27 in Section E are based on practical skills. Each question

carries two marks. You can answer the questions in brief.

Section A (1 mark each)

Q#1: What is Evaporation?

Q#2: Which man-made compounds cause ozone-layer depletion?

Section B (2 marks each)

Q#3: Describe how evaporation causes cooling.

(OR)

Give two differences between evaporation and boiling of a liquid.

Q#4: A saline water solution contains 50 grams of salt dissolved in 400 grams of water.

Calculate the concentration of the solution in terms of mass-by-mass percentage of the

solution.

(OR)

What is a solution? What are the components of a solution?

Q#5: what are plastids? What are the types of plastids?


Section C (3 marks each)

Q#6: Give any 3 properties of metals.

(OR)

Give any 3 differences between mixtures and compounds.

Q#7: What are ions? Give two examples of ionic compounds.

Q#8: Give three observations from Rutherford’s alpha-scattering experiment.

Q#9: Describe tissues. Give the two main types of plant tissues.

Q#10: Beginning from rest, Batman accelerates his Batmobile to reach a velocity of 60 meters

per second in 10 seconds. Then he applies the brakes and the velocity of the Batmobile decreases

to 10 meters per second in the next 1 second. Calculate the acceleration of the Batmobile in both

cases.

Q#11: What is the work that must be done to increase the velocity of a bike that weighs 200 kg

from 20 m/s to 30 m/s.

Q#12: Draw and label a diagram showing the auditory parts of the human ear.

Q#13: What are acute and chronic diseases? Give an example for both.

(OR)

What are infectious diseases? Give two ways that an infectious disease may spread.

Q#14: Draw a diagram to explain the nitrogen cycle in nature.

Q#15: Give 3 factors for which crop variety improvement is done.

Section D (5 marks each)

Q#16: Give any 5 postulates of Dalton’s atomic theory.

(OR)

(i) Give the chemical formulae of (a) sodium oxide and (b) sodium sulfide (c) Magnesium

Hydroxide.

(ii) Give the names of the following compounds (a) Al2(SO4)3 (b) KNO3

Q#17: What are Neurons? Draw a clear and labeled diagram of a neuron.

Q#18: (i) What are the 7 chief classification groups used to classify living organisms? (ii) Name

the 5 kingdoms into which all living organisms are classified.

Q#19: (i) State Newton’s three laws of motion.

(ii) Find the value of the constant force that is applied for 1 second on a 10kg object to increase

the velocity of the object from 5 m/s to 10 m/s.

Q#20: What is the Universal Law of Gravitation? Obtain a Mathematical equation for it. Also,

give two points highlighting its importance.

Q#21: List 5 Differences between Potential energy and Kinetic energy.

Section E (2 marks each)

Q#22: We encounter many animals on a day to day basis. Some of these animals are also kept as

pets in human homes, such as dogs. How can dogs be classified scientifically?

Q#23: We come across a wide range of motions every day. Give an example of acceleration

which is in the direction of motion and acceleration which is against the direction of motion.

Q#24: Give two examples where we experience inertia in our day to day lives.

(OR)

Q#24: List two situations wherein the third law of motion can be observed.

Q#25: Describe any 2 situations in which we can feel the effects of buoyancy.

Q#26: In high-speed aircraft testing zones, the windows of buildings are reinforced. Why is this

important?

Q#27: Give two examples of diseases which may arise from the formation of puddles due to

excessive rain and poor drainage systems.


SUBJECT: SCIENCE CLASS : IXCL

MAX. MARKS : 90 DURATION : 3 HRS

1. The question paper comprises of two sections – A, B. You are to attempt all the sections.2. All questions are compulsory.3. There is no overall choice. However Internal Choice has been provided in all the five questions of 5 marks

category. Only one option in such questions is to be attempted.4. Question numbers 1 to 3 in Section-A are one mark questions. They are to be answered in one word or

in one sentence.5. Question numbers 4 to 7 in Section- A are two marks questions. These are to be answered in about

30 words each.6. Question numbers 8 to 19 in Section-A are three marks questions. These are to be answered in about

50 words each.7. Question numbers 20 to 24 in Section-A are 5 marks questions. These are to be answered in about

70 words each.8. Question numbers 25 to 42 in Section- B are multiple choice questions based on practical skills.

Each question is of one mark. You are to choose one most appropriate response out of the four providedto you.


SECTION – A

1. Which form of energy will a body possess placed at the top of hill?

2. In which layer of the atmosphere ozone layer is located?

3. If Z=3,What would be the valency of element? Write the name of element.

4. Calculate the mass of 1 molecule of Nitrogen gas.

5. Complete the following chart-

6. State two causes and two effects of depletion of ozone layer.

7. Relative density of silver is 10.8 ,The density of water is 10³ kg/m³. What is density of silver in S.I.

unit?

8. Give reasons-

a. Which divison among plants have the simplest organisms?

b. How do Gymnosperms and Angiosperms differ from each other?

9. A) Why a person suffering once from small pox cannot suffer from it again?

B) Name one disease associated with the attack of microbe on the lungs.

10. A child hears an echo from a cliff in 10 sec after the sound from an animal is produced. Calculate

the distance between the cliff and the child. ( take velocity of sound as 340 m/s)

11. A) Draw a diagram showing graphical representation of low pitch and high pitch sound.

B) Write any 2 applications of SONAR.

12. People often bemoan that quality of air has gone down since their childhood.

a) How is quality of air affectd?

b) How does this quality affect us and other life forms?

13. A) Write 2 differences between acute and chronic diseases.

B) Give one example of each.

14. Identify the phylum of the following 2 organisms and write 2 characteristic feature of each-

(a) (b)

VERTEBRATA

PISCES AMPHIBIANS (C) (A)

ALL FISHES Live on land and ----(B) 3 Chambered heart Have ----- (D) to

feed young ones

Pneumatic bones

MAMMALIA

15. A) Why are the shells in which electrons revolve called energy shells?

B) Name the shells.

C) How many electrons can be there in M shell?

16. A) Calculate the molar mass of CH3COOH. ( Atomic mass of C= 12 u, H=1 u, O=16 u )

B) Write the molecular formula for

i. Aluminium chloride.

ii. Ammonium nitrate.

17. A) Define power.

B) A body of mass 45 Kg climbs up 20 steps in 20 sec if each step is 25 cm high, calculate the power

used in climbing. Take g = 10m/s2.

18. Identify the energy transformation in the following- Hydroelectric power, explosion of cracker,

And oscillating pendulum.

19. A) What mass of sodium sulphate will react with 5.22 g of barium chloride to produce 6.10 g of

3sodium chloride and 2.80 g of barium sulphate?

B) On the basis of which law did you calculate your answer?

20. Explain an activity with labeled diagram that sound needs material medium for propagation.

OR

Explain working of human ear with the help of well labelled diagram.

21. A) What are biogeochemical cyles?

B) Draw a labelled diagram of nitrogen cycle.

OR

A) What is green house effect?

B) Draw a well labeled diagram of carbon cycle.

22. A) On which principle lactometer and hydrometer are based?

B) A bucket of water is easily lifted as long as it is in water. Why?

C) Following forces act on body immersed in a liquid.

a. Name the forces

b. What happens when A is greater than B.

B

A

OR

A) Give difference between thrust and pressure.

B) Why does an object float or sink when placed on the surface of water?

C) What do you mean by Buoyancy.

23. A) Derive an expression for kinetic energy of a moving body.

B) Name the type of energy possessed by

i. Flowing water

ii. Stretched rubber band

D) A car weighing 2000 Kg is accelerated from rest and covers a distance of 40 m in 6 sec. calculate

the work done by the car.

OR

A) Drive an expression for Potential energy of a body.

B) When do you say that work is done?

C) A porter lifts a luggage of 15kg from the ground and puts on his head 1.5m above the

ground.Calculate the work done by him on the luggage.

24. From the given table answer the following-

ELEMENT MASS NUMBER ATOMIC NUMBER

A 11 5

B 19 9

C 3 2

D 23 11

E 9 4

a) How many electrons are present in E?

b) Which is an inert gas? Why?

c) Which atom will form a negatively charged ion?

d) Which element has 12 neutrons? Why?

e) Which atom will form a cation with one positive charge.

OR

A) Which postulate of dalton’s atomic theory is the result of Law of conservation of

mass?

B) Why is it not possible to see an atom with naked eyes?

C) Write the symbols for following elements:

Sodium,Zinc,Lead,Chlorine.

SECTION- B

Multiple choice questions ( 1 MARK EACH)

25. Jointed appandages are characteristic feature of :

a. Cockroach

b. Earthworm

c. Bonyfish

d. Pigeon

26. The level of water in measuring cylinder before and after immersing a solid of mass 1.5 g has risen

from point A to B as shown below. The density of the solid object would be:

B

A

a. 1g/ cc b. 1.5 g/cc c. 2g/cc d. 0.75g/cc

27. If the reflected and incident sound are at an angle of 90 degrees with each other, the incident angle

should be:

a. 60 degrees

b. 30 degrees

c. 45 degrees

d. 180 degrees

28. 2 specimens A and B were observed by a child for spotting as shown below. After identifying the

given specimens, in which of the following groups should he place them:

FIGURE - A FIGURE - B

s.no A B

a Bryophyta Pteridophyta

b Pteridophyta Gymnosperms

c Algae Gymnosperms

d Gymnosperms Algae

29. A spring balance is used to calculate the mass of the body as shown below. A student calculated the

least count of the spring balance and found it to be:

a. 1.5 gwt/division b. 2 gwt/division c. 2.5 gwt/division d. 1 gwt/division

30. Which one of the following is not an adaptive feature of bony fish?

a. It has streamlined body.

b. Presence of anal cerci

c. Presence of fins

d. Presence of gills

31. The density of pure water at 25 degree celcius is:

a. 1g/m3

b. 1g/cc

c. 1000kg/cc

d. 100g/cc

32. For doing experiment on verification of laws of reflection of sound successfully, the reflecting

surface should be

a. A foam padded board.

b. A sheet of pure white cloth

c. A wooden board with many holes in it

d. A wooden board without holes

33. The umbrella like spherical part of the button mushroom is

a. Stipe

b. Pileus

c. Sporangiophore

d. Sporangium

34. The speed of sound in air is about

a. 3 x 108

m/s b. 340 m/s c. 340 cm/s d. 340 km/s

35. Ribbon shaped and spiral chloroplast is present in which of the following organism:

a. Ulothrix

b. Agaricus

c. Spirogyra

d. Chlamydomonas

36. Seeds are naked in:

a. Angiosperms b.Gymnosperms c. Both of these d none of these

37. While determining the density of a metal block using a spring balance and a measuring cylinder, a

student followed the following steps in his experiment.

I. Noted the water level in the measuring cylinder without the metal block.

II. Immersed the metal block centrally in water without touching the sides and centre of the bottom.

III. Noted the water level in the measuring cylinder with the metal block inside it.

IV. Removed the metal block from the water and immediately weighed it using a spring balance.

The incorrect step in the procedure is

a. I b. II c. III d. IV

38. When sound gets reflected from a surface:

a. The angle of reflection is always greater than the angle of incidence.

b. The angle of reflection is always less than the angle of incidence.

c. The angle of reflection is always equal to the angle of incidence.

d. The angle of reflection is always equal to 90 degrees.

39. Upthurst is a force which acts in

a. Upward direction

b. Downward direction

c. Any direction

d. None of the above\

40. Weight of an object in air is 100 N. Its weight in water will be:

a. Less than 100 N

b. More than 100 N

c. Equal to 100 N

d. Zero

41. Pulse is a

a. Short duration disturbance

b. Does not repeat

c. Can travel

d. All of the above

42. A pulse travels through a slinky 10 m long from one end to the other end and then back to the point

of origin in 3 sec. the velocity of pulse in the slinky is

a. 3.33 m/s

b. 4.5 m/s

c. 6 m/s

d. 6.66 m/s

SUBJECT: SCIENCE CLASS : IX

MAX. MARKS : 80 DURATION : 3 HRS

General Instructions: 1. The question paper comprises of five sections – A, B, C, D and E. You are to attempt all the sections.2. All questions are compulsory.3. Internal choice is given in sections B, C, D and E.4. Question numbers 1 and 2 in Section-A are one mark questions. They are to be answered in one word or

in one sentence.5. Question numbers 3 to 5 in Section- B are two marks questions. These are to be answered in about 30

words each.6. Question numbers 6 to 15 in Section-C are three marks questions. These are to be answered in about 50

words each.7. Question numbers 16 to 21 in Section-D are 5 marks questions. These are to be answered in about 70

words each.8. Question numbers 22 to 27 in Section- E are based on practical skills. Each question is a two marks

question. These are to be answered in brief.

SECTION – A 1. Write the criteria used for the classification of organisms as proposed by Whittaker.

2. Why is rabies virus called neurotrophic in nature?

SECTION – B 3. (a) Which wave property determines (i) Loudness, (ii) Pitch?

(b) How are wavelength and frequency related to speed of sound waves?

4. The successive crest and trough of a wave 30 cm apart. Find the wavelength. Also, find thefrequency of wave if 10 crests and 10 troughs are produced in 2s.

5. Differentiate between kharif and rabi crops. Mention the months in which these are sown. Giveone example of each.

OR (a) Define weed. Give two examples.(b) Why is it essential to remove weeds from agricultural fields?

SECTION – C 6. (a) Define matter and write its three states.

(b) Explain how these states of matter arise due to variation in the characteristics of the particles.OR

(a) Why does the water kept in an earthen pot become cool in summer?(b) Draw a well labelled diagram showing sublimation of camphor.(c) Convert: 340 K to degree Celsius.

7. Draw labelled diagram of the apparatus used to separate a mixture of two immiscible liquids.

8. List in the tabular form any three differences between the Aves and the Mammalia group.OR

List some adaptations of reptiles towards terrestrial mode of life.


9. State Law of Conservation of Energy and express it in the form of an equation for a body ofmass m falling from a point A at height h, above the ground at (a) A, (b) B at a height fromground, (c) C.

OR

Define power. State commercial unit and SI unit of electrical energy. An electric heater of 400 W works for 2 hours. Find the electrical energy units consumed in a day.

10. Define mass number and atomic number. How are these represented around the symbol of anelement? The mass number and atomic number of an isotope of uranium (U) are 235 and 92respectively. Calculate the number of protons and neutrons in the nucleus of the atom.

11. What is xylem? Name the four elements of xylem and write one function of each.

12. (a) Define average speed.(b) A bus travels a distance of 120 km with a speed of 40 km/h and returns with a speed of 30km/h. Calculate the average speed for the entire journey.

13. Car A of mass 1500 kg travelling at 25 m/s collides with another car B of mass 1000 kgtravelling at 15 m/s in the same direction. After collision, the velocity of car A becomes 20 m/s.Calculate the velocity of car B after collision.

14. Water is meant by RRR of water bodies. Explain in brief.

15. What is Nitrogen fixation? Mention two differences between nitrification and denitrificationprocesses. Name the organisms involved in these processes.

SECTION – D

16. Verify by calculating the following:(a) Number of molecules in 100 g of NH3 is more than 100 g of N2[Atomic mass of N = 14 u, H = 1 u](b) 60 g of carbon and 60 g of magnesium elements have a molar ratio 2 : 1[Atomic mass of C = 12 u, Mg = 24 u].

17. (a) Explain the formation of complex permanent tissue in plants. Mention two types of complextissues and write their functions.(b) How simple permanent tissues are different from complex permanent tissues?

OR What are neurons? Where are they found in the body? What functions do they perform in the body of an organism?

18. State Archimedes’ principle. How will you verify it experimentally?OR

(a) Differentiate between acceleration due to gravity and universal gravitational constant. Derivea relation between ‘g’ and ‘G’.(b) State universal law of Gravitation.

19. (a) Explain why did Rutherford select a gold foil in his alpha scattering experiments?(b) What observations in a scattering experiment led Rutherford to make the followingobservations:(i) Most of the space in an atom is empty.(ii) Nucleus is positively charged.(c) Mention any two drawbacks of Rutherford’s model.

OR (a) The average atomic mass of a sample of an element X is 16.2 u. What are the percentage ofisotope 816X and 818X in the sample.(b) On the basis of Thomson’s model of an atom explain how the atom is neutral as a whole.

20. Given below is a diagrammatic sketch of electron microscopic view of an animal cell :(a) Label the parts indicated by lines as 1 to 10.(b) Give two reasons to support that it is an animal cell.(c) How many mitochondria are shown in the diagram?

21. (a) Define work. Give SI unit of work. Write an expression for positive work done.(b) Calculate the work done in pushing a cart through a distance of 50 m against the force offriction equal to 250 N. Also state the type of work done.(c) Sarita lives on 3rd floor of building at the height of 15 m. She carries her school bagweighting 5.2 kg from the ground floor to her house. Find the amount of work done by her andidentity the force against which she has done work (g = 10 ms–2)

SECTION – E

22. Silver iodide, AgI is a yellow crystalline solid. But when it is exposed to sunlight, it forms solidgrey silver and iodine. Why? Give one practical application of this reaction and write theequation also.

23. Name the various techniques or practices used for achieving sustainable agriculture.

24. Among solids, liquid and gases, which one has(a) maximum force of attraction between particles.(b) minimum space in between particles.Give reason in support of your answer.

OR Identify and explain the factor responsible for changed rate of evaporation in the following situations: (a) While putting clothes for drying, we spread them out.(b) Water coolers are not effective on a rainy day.

25. Although Archana has been suffering from cold and cough she decided to appear for her classtest. Classmates seated close to her had an exposure to the infection being carried by Archana.However, only one of them actually suffered from cold and cough. Explain, what prevented restof those classmates catching cold and cough in spite of their exposure to the infection.

ORA virus enters the immune system of a patient and damages its function. Answer the following:(a) Name the disease he is suffering from.(b) Name the pathogen and two modes of transmission of this virus.

26. Find the displacement of a body whose velocity time graph is shown below:

OR

Even when a body covers equal distances in equal time intervals, its velocity can be variable. Comment giving an example.

27. In the below experimental set-up, a student gives the card a sharp and fast horizontal flick with afinger.

(i) What will happen to the coin?(ii) State reason for your answer.

शीतकालीन अवकाश गृहकार्य 2020-21

कक्षा नवमी ववषर् - वहिंदी १. निम्ननिखित उपसर्गों से दो-दो शब्द बिाइए।

निि, प्र, अिु, स, प्रनत, अनत, अब, दूर, अनि, उि, अ, कु, नि, दु, नबि,

बर, रै्गर, परर

२. निम्ननिखित प्रत्यय से दो-दो शब्द बिाइए।

एरा, आहट, वािा, ईय, त्व, इत, औिा, आस, आव, इया, आऊ, पि, हारा,

कर, िु, ता

३. समास के प्रकार नििकर उसके ५-५ उदाहरण समास नवग्रह के साथ निखिए।

४. अिंकार के प्रकार उदाहरण के साथ निखिए।

५. निबंध िेिि।

१. वि रहेंरे्ग, हम रहेंरे्ग।

२. मेरे जीवि का िक्ष्य।

३. मेक इि इंनिया।

६. (अ) टर ेि में सफर कर रहे दो यानियो ंके बीच संवाद।

(आ) बिे िाई के साथ अपिी परीक्षा की तैयारी को िेकर बातचीत।

६. िैनतक मूल्ो ंपर आधाररत दो कहािी निखिए।

७. (अ) पररश्रम का मह्त्व बताते हुए छोटे िाई को पि निखिए।

(आ) स्वच्छ िारत अनियाि को सफि बिािे के निए अपीि करते हुए नकसी

राष्ट्र ीय दैनिक समाचार

पि के संपादक को पि निखिए।

KENDRIYA VIDYALAYA DRDO, BANGALORE WINTER BREAK HOLIDAY HOMEWORK ENGLISH- CLASS IX- 2020-21 1. Read the following passage :- Mount Vesuvius, a volcano located between the ancient Italian cities of Pompeii and Herculaneum, has received much attention because of its frequent and destructive eruptions. The most famous of these eruptions occurred in A.D. 79. The volcano had been inactive for centuries. There was little warning of the coming eruption, although one account unearthed by archaeologists says that a hard rain and a strong wind had disturbed the celestial calm during the preceding night. Early the next morning, the volcano poured a huge river of molten rock down upon Herculaneum, completely burying the city and filling the harbor with coagulated lava. Meanwhile, on the other side of the mountain, cinders, stone and ash rained down on Pompeii. Sparks from the burning ash ignited the combustible rooftops quickly. Large portions of the city were destroyed in the conflagration. Fire, however, was not the only cause of destruction. Poisonous sulfuric gases saturated the air. These heavy gases were not buoyant in the atmosphere and therefore sank toward the earth and suffocated people. Over the years, excavations of Pompeii and Herculaneum have revealed a great deal about the behavior of the volcano. By analyzing data, much as a zoologist dissects an animal specimen, scientists have concluded that the eruption changed large portions of the area’s geography. For instance, it turned the Sarno River from its course and raised the level of the beach along the Bay of Naples. Meteorologists studying these events have also concluded that Vesuvius caused a huge tidal wave that affected the world’s climate. In addition to making these investigations, archaeologists have been able to study the skeletons of victims by using distilled water to wash away the volcanic ash. By strengthening the brittle bones with acrylic paint, scientists have been able to examine the skeletons and draw conclusions about the diet and habits of the residents. Finally, the excavations at both Pompeii and Herculaneum have yielded many examples of classical art, such as jewelry made of bronze, which is an alloy of copper and tin. The eruption of Mount Vesuvius and its tragic consequences have provided everyone with a wealth of data about the effects that volcanoes can have on the surrounding area. Today, volcanologists can locate and predict eruptions, saving lives and preventing the destruction of other cities and cultures.

Now choose the correct option in the following questions:-

(i) Herculaneum and its harbor were buried under _________ lava. 1. liquid 2. solid 3. flowing 4. gas

(ii) The poisonous gases were not _________ in the air. 1. able to float 2. visible 3. able to evaporate 4. invisible

(iii) Scientists analyzed data about Vesuvius in the same way that a zoologist _________ a specimen.

1. describes in detail 2. studies by cutting apart 3. photographs 4. chart

(iv) _________ have concluded that the volcanic eruption caused a tidal wave. 1. Scientists who study oceans 2. Scientists who study atmospheric conditions 3. Scientists who study ash 4. Scientists who study animal behavior

(v) Scientists have used _________ water to wash away volcanic ash from the skeletons of victims.

1. bottled 2. volcanic 3. purified 4. sea

2.Read the following passage :- Marie Curie was one of the most accomplished scientists in history. Together with her husband, Pierre, she discovered radium, an element widely used for treating cancer, and studied uranium and other radioactive substances. Pierre and Marie’s amicable collaboration later helped to unlock the secrets of the atom. Marie was born in 1867 in Warsaw, Poland, where her father was a professor of physics. At an early age, she displayed a brilliant mind and a blithe personality. Her great exuberance for learning prompted her to continue with her studies after high school. She became disgruntled, however, when she learned that the university in Warsaw was closed to women. Determined to receive a higher education, she

defiantly left Poland and in 1891 entered the Sorbonne, a French university, where she earned her master’s degree and doctorate in physics. Marie was fortunate to have studied at the Sorbonne with some of the greatest scientists of her day, one of whom was Pierre Curie. Marie and Pierre were married in 1895 and spent many productive years working together in the physics laboratory. A short time after they discovered radium, Pierre was killed by a horse-drawn wagon in 1906. Marie was stunned by this horrible misfortune and endured heartbreaking anguish. Despondently she recalled their close relationship and the joy that they had shared in scientific research. The fact that she had two young daughters to raise by herself greatly increased her distress. Curie’s feeling of desolation finally began to fade when she was asked to succeed her husband as a physics professor at the Sorbonne. She was the first woman to be given a professorship at the world-famous university. In 1911 she received the Nobel Prize in chemistry for isolating radium. Although Marie Curie eventually suffered a fatal illness from her long exposure to radium, she never became disillusioned about her work. Regardless of the consequences, she had dedicated herself to science and to revealing the mysteries of the physical world.

Now choose the correct option in the following questions:-

(i) The Curies’ _________ collaboration helped to unlock the secrets of the atom. 1. friendly 2. competitive 3. courteous 4. industrious

(ii) Marie had a bright mind and a ______ personality. 1. strong 2. lighthearted 3. humorous 4. strange

(iii) When she learned that she could not attend the university in Warsaw, she felt _________.

1. hopeless 2. annoyed 3. depressed 4. worried

(iv) Marie _________ by leaving Poland and traveling to France to enter the Sorbonne.

1. challenged authority 2. showed intelligence 3. behaved

4. was distressed

(v) _________ she remembered their joy together. 1. Dejectedly 2. Worried 3. Tearfully 4. Happily

(vi) Her _________ began to fade when she returned to the Sorbonne to succeed her husband.

1. misfortune 2. anger 3. wretchedness 4. disappointment

(vii) Even though she became fatally ill from working with radium, Marie Curie was never _________.

1. troubled 2. worried 3. disappointed 4. Sorrowful

3. While going home you came across many children on the roads at crossroads with begging bowls in their hands. You are shocked and disgusted at this unflattering picture of a country which boasts of being a major economy in the world. Record your experience in your diary in 100-120 words. 4. Taking help from the introduction given below develop a complete story in 100-120 words. Veeru and Karim were young Keralites. Next week their school was going to organise a camp near a forest in Ponmuddy … 5. Explore the dance forms and food habits of Karnataka and Uttarakhand and write about them in a project file containing 6-8 pages. The first page should have details like your name, class, roll number, subject-teacher’s name and topic. The other 5-7 pages should be for the content. Paste/draw pictures related to the food items and dance forms of both the states. Please see the rubrics given below which will be used to evaluate your project. Total marks for the project is 25.

Rubrics

CRITERIA 1 SCORE POINT

2 SCORE POINT

3 SCORE POINT

4 SCORE POINT

5 SCORE POINT

Originality, creativity and imagination

Missing criteria, poor presentation.

Meets minimal criteria, fair presentation.

Meets minimal criteria, needs more originality

Acceptably meets the criteria, clear presentation.

Exceeds criteria, superb presentation and creativity

Completeness/ thoroughness

Missing many things,incomplete

Missing a few things,incomplete

Missing some important points,partially complete

Meets criteria acceptably

Exceeds criteria, superb presentation and fully complete

Elaboration, addition of interesting detail

No interesting detail, incomplete elaboration,poor presentation.

Not enough interesting details and elaboration

Lack of a few interesting details and facts

Meets criteria acceptably

Exceeds criteria, superb presentation

Use of art to enhance or complement meaning

Missing criteria, poor presentation.

Lack of pictures etc,irrelevant art included

Needs more artistic sense

Meets criteria acceptably,use of art

Exceeds criteria, superb presentation,use of original and creative picture/other arts etc

Quality of final product

Poor overall presentation,incomplete

Meets minimal criteria, but lack many things,incomplete

Partially complete,lack of originality and art integration

Writing and presentations reflect critical thinking: points are good because they are relevant

Exceeds criteria, superb presentation,creativity,art integration,attractive,originality

Total points 25

KENDRIYA VIDYALAYA D.R.D.O BENGALURU-560093

MATH PORTFOLIO (Art integrated activity)

SESSION-2020-2021

NAME OF STUDENT-

CLASS-

SECTION-

ROLL NUMBER-

In K.V.D.R.D.O studying in class___________________.

Note: For the achievements you mention above ,attach the certificates of maths related competitions/tests .

MATHEMATICS (ART INTEGRATED ACTIVITY)

CLASSIX/X ( 2020-2021)

TOPIC : UTTARAKHAND AND KARNATAKA

1. Introduction to ancient geometry.

2. Use of geometry in various art forms/monuments and

structures in INDIA.

3. Monuments and Structures in Uttarakhand and Karnataka-

Shapes and size of structures.(Similarities and differences)

4. Geometry in various art forms of monuments and structures

of Uttarakhand and Karnataka.

5. My learning experiences in doing this project.

NOTE : Make a single pdf and upload in the google class

room.

Submission date- 05/01/2021

CLASS 9 SOCIAL SCIENCE WINTER BREAK HOMEWORK

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