Date: 20/05/2020 Ref: AIS/2020-21/0008 Holiday Homework ...€¦ · Holiday Homework for Class IX Subject: English Prepare a project based on the present scenario and the condition

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Date: 20/05/2020 Ref: AIS/2020-21/0008

Holiday Homework for Class IX

Subject: English

Prepare a project based on the present scenario and the condition of the people across the globe and compare it with

the scenario and condition that prevailed in the Indian mythological stories and epics based on the concept of

quarantine and self-isolation which even had its presence during that era. Students are advised to refer to the incidents

from Ramayana with special reference to the exile of Rama as well as the episode of Ahalya. References must also be

drawn keeping in mind the exile of Pandavas and their life under the isolation period. A comparative study with any

other sphere of mythology can be shared and included to enhance the quality of the content.

Students must paste pictures which are relevant and necessary to explain the project. The students are advised to

prepare the project either in an A4 size paper and attach it in a channel file or they can even use their pages of the old

copy they have or may use a new notebook available with them and can staple the sheets in a sequential manner with

the necessary pictures attached with their writings.

Subject: Mathematics

I. Multiple choice questions:

1. The value of k for which the polynomial x3- 4x2+2x+ I has 3 as its zero s a) 3 b) -3 c) 6 d) -6 2. Which is the zero of the polynomial x3 +2x2-5x -6 a) -2 b) 2 c) -3 d) 3 3. The factorization of –x2 +7x -12 yields a) (x-3)(x-4) b) (3+x)(4-x) c) (x-4)(3-x) d) (4-x)(3-x)

4 . If p(x)= x4 – x2+ x then p(1/2)= a) 1/16 b) 3/16 c) 5/16 d) 7/16

5. If x3+x2 + ax+115 is exactly divisible by x+5, then a is a) 8 b) 6 c) 5 d) 3

II. Short answer type questions:

6. Factorize √2x2+3x +√2 7. Find the values of a and b so that the polynomial x4 +ax3 -7x2+8x+b is exactly divisible by (x+3) and (x+2). 8. Using Remainder theorem find remainder when x3 -3x2 +4x +50 is divided by x+3 9. Factorize 2x3 + 54 10. Factorize a3 –b3+ 1 +3ab


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III. Long answer type questions :

11. Express 4.17as a vulgar fraction. 12. Represent √5 on a number line. 13. If x= 3-√2 show √x- 1/√x= +2 and -2 14. Without division show x3 -3x2 -13x +15 is divisible by x2+2x -3. 15. Factorize x2 -x – 240

Subject: Chemistry

Read the passage carefully and answer the following questions:

If 2 or more substances are mixed together in any proportion, do not undergo any chemical changes but

retain their properties, the resulting substance is called mixture Mixtures are of 2 types namely

homogeneous and heterogeneous .Solution of sugar in water is a homogeneous mixture. The sugar dissolves

in water uniformly.

1. Write 3 characteristics of mixtures.

2. What is homogeneity?

3. Identify the following as homogeneous or heterogeneous mixtures. Also identify the type of

constituents in mixture:

a) Air b) water and oil c) hydrogen in palladium d)Aerated water e)dust water f) sand and

ammonium chloride g) milk h)chalk in water i) Blood

4. Write 4 differences between homogeneous and Heterogeneous mixtures.

5. Define solution, solvent and solute with examples.

6. Why sugar solution is homogeneous?

7. What is super saturated solution?

8. How will you make sugar solution at home?

9. What are the properties of solution?

10. How temperature plays role in dissolving solute in a solvent?

Subject: Physics

1. What can you say about the nature of the motion of the body if its displacement time graph is

a. Straight line parallel to time-axis.

b. Straight inclined to time-axis, with obtuse angle.

Q 2.The figure below shows motion for bodies A, B, C, D state what information do you get about the acceleration

of the bodies.


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Q3. A train starts from rest and accelerates uniformly at 100m/min^2 for 10 mins . Find the velocity acquired by the

train. It then maintains a constant velocity for 20 mins . The brakes are then applied and the train is uniformly

retarded. It comes to rest in 5 mins. Draw velocity time graph to find:

a) Retardation in last five mins.

b) Distance travelled in total.

c) Average velocity of the train.

Q4. The figure below shows velocity time graph of a particle moving in straight line.

a) State the nature of motion of particle.

b) Calculate displacement at t=6sec.

c) Does the particle change its direction of motion?

d) Compare the distance travelled by the particle form 0 to 4 sec and from 4 sec to 6 sec.

e) Find the acceleration from 0 to 4 sec and retardation from 4 sec to 6 sec.


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Q6. Solve the following numericals:

a) A motor boat starting from rest on a lake accelerates in a straight line at a constant rate of 3.0m/s^2 for 8sec. How

far does the boat travel during this time?

b) Under what condition is the magnitude of the average velocity of the object is equal to its average speed?

c) Differentiate between odometer and speedometer.

d) 4 cyclist A, B, C, D starts at the same point and at the same time and move in a straight line to reach the destination.

They all move with uniform velocity but they reach the destination in the following order: C A B D . Answer

i. if the displacement time graph is plotted for each cyclist , which will be having highest slope.

ii. Arrange the cyclist in descending order of velocity.

e) A object goes from point X to Y and comes back from y to X. Calculate average velocity, if distance travelled is 10 km

in 2hrs.

f) A particle moves over 3 quarters of a circle of radius r. What is the magnitude of its displacement?


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g) The following data gives information about the motion of the car:

Q7. Which of the following is moving faster justify.

a) A scooter with a speed of 300 m/min.

b) A car moving with a speed of 36 km/hr.

Q8. Identify the kind of motion in following cases:

a) A car moving with constant speed turning around a curve.

b) An electron orbiting around the nucleus.

Q9. Which of the followings can sometimes be zero for a moving body? Justify.

i. average velocity

ii. Distance travelled

iii. Average speed

iv. Displacement.

Subject: Biology

1. Choose the correct option from the following:

i) What is ‘Autolysis’?

(a) Self-replication (b) Self-digestion (c) Self-food producers (d) Food decomposer

ii) Which cell organelle is not bound by a unit membrane?

(a) Lysosome (b) Ribosome (c) Endoplasmic reticulum (d) Nucleus

iii) Largest number of cell bodies of neuron in our body are found in:

(a) Retina (b) spinal cord (c) brain (d) tongue

iv) Chromosomes are composed of

(a) DNA and protein (b) DNA and sugar (c) sugar and protein (d) chromatin


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v) A cell loses water by osmosis when kept in a solution having a lower concentration of water than the cell. The given

solution is-

(a) hyper-tonic (b) hypo-tonic (c) isotonic (d) dilute

vi) Four students marked on onion epidermal cell seen under a microscope as below. Identify the correctly labeled

diagram.

(a) A (b) B (c) C (d) D

vii) Label the part ‘A’ on an onion peel shown in the diagram.

(a) Cell wall (b) Nucleus (c) Cytoplasm (d) Cell membrane

vii) Endoplasmic reticulum one of the cell organelles, exists as a membranous network that extends from outer

membrane of nucleus to the plasma membrane making a connection between them.

Which of the following statements is not related to the endoplasmic reticulum? (a) It behaves as transport channel for proteins between nucleus and cytoplasm. (b) It transports materials between various regions in cytoplasm. (c) It can be the site of energy generation. (d) It can be the site of some biochemical activities of the cell.


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viii) The nucleus controls all the activities of the cell and acts as a site of DNA material and protein synthesis. It is composed of some components which all together give the nucleus its functionality. Here is shown a figure of nucleus with some of its components labeled as A, B, C and D. can you name these components correctly?

(a) A – Nucleons; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm

(b) A – Nucleus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm

(c) A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm

(d) A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nuclear wall

2. Assertion reason based questions:

DIRECTION : In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the

correct choice as:

(a) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

(b) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

(c) Assertion (A) is true but reason (R) is false.

(d) Assertion (A) is false but reason (R) is true.

i) Assertion : A cell swells up when present in a hypotonic solution.

Reason : More water molecules enter the cell than they leave.

ii) Assertion : Leucoplasts perform photosynthesis.

Reason : Chloroplasts store fats, starch and proteins.

iii) Assertion : A cell membrane shows fluid behaviour.

Reason : A membrane is a mosaic of lipids and proteins.

iv) Assertion : A plant cell bursts if placed in water.

Reason : High turgor pressure causes bursting of plant cells.

v) Assertion : Mitochondria are called ‘powerhouses’ of the cell.

Reason : Mitochondria produce cellular energy in the form of ATP.


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3. Mention the labelled parts in the given box & state their functions.

4. Activity based question:

Carry out the following osmosis experiment:

Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made

from a boiled potato. Put each potato cup into a trough containing water. Now

(a) Keep cup A empty,

(b) put one teaspoon sugar in cup B.

(c) put one teaspoon salt in cup C.

(d) put one teaspoon sugar in the boiled potato cup D.

Keep these for 2 hours. Then observe the four potato cups and answer the following:

(i) Explain why water gathers in the hollowed portion of B and C.

(ii) Why is potato A necessary for this experiment.

(iii) Explain why water does not gather in the hollowed out portions of A and D.

5. Answer the following questions from the paragraph given below:

All cells must take up and turn out materials through cell membrane .The plasma membrane acts as physical barrier

between the cell and its surrounding environment and between the cell organelles and the surrounding cytoplasm. The

cell membranes are not freely permeable, i.e., they do not allow movement of all kinds of substances across them.

Instead, these are selectively permeable, i.e., they allow the entry or exit of only selected materials. Cell membranes

allow the movement of different materials across them differently involving passive transport, active transport and bulk

transport.

(a) name two processes of transport of materials which are slow , do not expand energy and do not use carrier protein?

(b) Name any two substances which require the use of energy and carrier proteins for their transport through plasma

membrane?

(c) Name the special processes which are involved in the bulk transport of materials across the plasma membrane?

(d) Which special process involving bulk transport is also called ‘cell drinking?


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Subject: Social Science

HISTORY

1. The French Revolution spanned over ten years.(1789 – 1799) There are many key moments that changed its direction

over this period.

Create a timeline of pivotal moments in the Revolution.

Instructions

⮚ Prioritize the key events in the French Revolution.

⮚ Place these events in a chronological order.

POLITICAL SCIENCE

1. Read the cartoon given below and answer the questions that follow -


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This cartoon is from Brazil, a country that has long experience of dictatorship. It is entitled “The Hidden Side of

Dictatorship”.

i) Which hidden sides does this cartoon depict?

ii) Is it necessary for every dictatorship to have a hidden side?

iii) Find out more about the dictators including Pinochet in Chile, Jaruzelski in Poland, Sani Abacha in Nigeria and

Ferdinand Marcos in the Philippines.

GEOGRAPHY

1. On an outline map of India show all the mountain ranges and peaks that you read in the lesson - The physical

features of India.

2. Locate the peaks, passes, ranges, plateaus and duns hidden in the puzzles and also find where they are located

Subject: 2nd language (Bengali)

বিদেশ ভ্রমদে বগদ়ে এক মহামারীর সম্মুখীদে বেদেদক বকভাদি সুরবিত রাখদে –তা োবেদ়ে একটি োবতেীঘ ঘ প্রিন্ধ লেখ।

(A4 Page a বেদখ েমা লেদি, ছবির প্রদ়োেেী়েতা লেই)

Subject: 2nd language (Hindi)

कोरोना लॉकडाउन के समय आपने अपने परिवार मंे किस तरह कि सहायता की और विशेष क्या सीखा?

‘दो बैलों की कथा’ के माध्यम से प्रेमचंद जी ने कई नीति- विषयक मूल्यो ंको दिखाने की कोशिश की है, आपको

इस से क्या शिक्षा मिलती है? उन नीति- विषयक मूल्यो ंको लिखिए ।


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Subject: IT

IN OUR SYLLABUS WE HAVE LEARNT ABOUT MANY EDITING AND FORMATTING TOOLS OF MS WORD APPLICATION

SOFTWARE.

1. GIVE YOUR VIEW ON ANY ASPECTS OF CURRENT SOCIO-ECONOMIC CONDITION OF THE WORLD WITH IN 250 WORDS.

(FORMATTING TOOLS SHOULD BE USED).

2. CREATE A RELEVENT COVER PAGE ON THE ABOVE TOPIC USING ALL TOOLS.

3. DOCUMENTATION MUST BE DONE IN MS WORD. STUDENTS WILL SAVE THE FILE WITH THEIR NAME, CLASS AND SEC.

4. Write the shortcut keys for the following: (write this in the last page of your word file)

a) To display the open dialog box

b) To close the word document

c) For subscript

d) For superscript

e) Activate the spelling and grammar

f) To open thesaurus.

Documents

Date: 20/05/2020 Ref: AIS/2020-21/0008 Holiday Homework ...€¦ · Holiday Homework for Class IX Subject: English Prepare a project based on the present scenario and the condition