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ST. ANGEL’S SCHOOL

AUTUMN HOLIDAYS

HOMEWORK(2019-20)

CLASS IX

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ST. ANGEL’S SCHOOL

AUTUMN HOLIDAYS

HOMEWORK(2019-20)

CLASS IX

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ENGLISH SECTION-A

1. choose the most appropriate options from the ones given below to complete

the following paragraph

A forty year old man (a)___________ and six others (b)____________ when

the van in which they (c)___________ overturned after colliding with a truck

last evening.

(a) (i) killed (ii) was killed (iii) was killing (iv) killing

(b (i) were injured (ii) injured (iii) had been injured (iv) injury

(c (i) travel (ii) travelled (iii) were travelling (iv) travel

2. The following passage has not been edited. There is one error in each line. Write

the incorrect word and the correction in the space provided against the correct

blank number

. Error Correction

Teachers tend to respect hard work or high(a) ——- ——-

quality work. Did your best to keep your(b) ——- ——-

grades up.

Show them that you had put in a (c) ——- ——-

lot of time or effort.(d) ——- ——-

3. Read the conversation given below and complete the paragraph that follows.

Write the answers against the correct blank numbers in your answer sheet. Do

not copy the whole sentences.

Ramu : What do you want to do ?

Sham : I want to go dancing.

Ramu : I don’t know how to dance.

Sham : Don’t worry. It’s easy.

Ramu asked Sham (a)_________ . Sham told him (b)_________ . Ramu told

him (c)_________ . Sham told him not to worry as it was easy.

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SECTION-B

Q1.You have recently enjoyed ride on the Delhi Metro with a close associate. The

discipline and the modern technology impressed you and you could not resist the

temptation to pen down your experience. Express your joyous experience through

a diary entry in not more than 100 – 120 words.

Q2. More and more children are becoming prone to several diseases unheard of so far

among children. It is due to change in lifestyle. Write an article in about 100-120

words with the help of the clues given below:

Several diseases: heart problems, diabetes etc.

Sitting and watching T.V.

Do not play games or walk, eat junk food and aerated drinks

Advised physical exercise to keep healthy.

Q3.Write a story using the outline given below and your own ideas in about 150-200

words. Assign a suitable title and a moral to it.

A good boy ---continues disobeying his parents----gets into bad company---gets rude

and insolent---father gives him some good apple ---tells him to lay them aside for

few days ---places a rotten apple among them---- the rotten apple spoils the good

ones----- boy learns the lesson and leaes the bad company.

Q4.Read English Newspaper and listen to English News everyday in order to enrich

your vocabulary and spoken English.

Q.5.Why did Jerome have to reopen the packed bag?

Q.6. What did George and Harris offer to pack and why?

Q.7.Why did Santosh’s parents agree to pay for her schooling in Delhi? What mental

qualities of Santosh are brought into light by this incident?

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ihMdI

Baaga ‘k’

1 AnaucCod laoKna

iva&ana ka imalaa jaba AaQaar¸ sauKI huAa saara saMsaar

baZtI AabaadI¸ GaTto vana

samaaja maoM naarI ka sqaana

2 p~ laoKna ³AnaaOpcaairk p~´

dIpavalaI pr pTaKo na jalaanao hotu Anauja kao p~.

vaaiYa-k prIxaa kI tOyaarI ko ilae CaoTI bahna ÀBaa[- kao p`ork p~.

3 saMvaad laoKna

‘baccaaoM ka iSaxaa ko p`it kma haota $Jaana’ ivaYaya pr dao AqyaaipkaAaoM ko maQya saMvaad.

ihMdI ivaYaya ko iksaI piryaaojanaa kaya- kI tOyaarI ko ivaYaya maoM dao Ca~aoM ko baIca saMvaad.

4 iva&apna laoKna

‘jaUsa kana-r’ evaM ‘Saud\Qa panaI’ sao saMbaMiQat dao Alaga ­ Alaga sauMdr evMa AakYa-k iva&apna banaa[e.

Baaga ‘ba’

5 saUya-maMDla maoM naaO ga`h hOM. Sauk` saUya- sao k`maSa: dUrI ko Anausaar dUsara ga`h hO AaOr pRqvaI tIsara.

ica~ saiht piryaaojanaa puistka maoM Anya ga`haoM ko naama k`maanausaar ilaiKe.

³]prao@t samast kaya- vyaakrNa kI ka^pI maoM krnaa hO.´

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MATHS Ch-4 (Linear Equations In One Variable)

Section A MCQ (Q1 to 5)

Q1. Any solution of the linear equation 2x + 0y + 9 = 0 in two variables is of the form

(a)(- 9

2, m) (b)(n, -

9

2) (c) (0 , -

9

2) (d) ( - 9, 0)

Q2. x= 5, y =2 is a solution of the linear equation (a) x + 2y = 7 (b) 5x + 2y = 7 (c)x + y = 7 (d) 5x + y = 7 Q3. The equation x = 7, in two variables, can be written as (a)1.x + 1.y = 7 (b) 1.x + 0.y = 7 (c) 0.x + 1.y = 7 (d)0.x + 0.y = 7 Q4. Any point on the line y = x is of the form (a) (a, a) (b) (0, 0) (c) (a, 0) (d) (a, - a) Q5.The equation 2x – 5y = 4 has a unique solution if x, y are (a) Rational numbers (b) Real numbers (c) Natural numbers (d) Positive real numbers

Q6.Solve for x: (3x-7)/5 - (x+1)/6 = (2x+2)

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Q7.Prove that x=2 and y=1 are the solutions of the equation 2x+5y = 9. Q8.Write 5 solutions for the equation y+3x = 9. Q9.Give the geometric representation of 2x-5=0 as an equation in 2 variables. Q10.Express 3x = 7y in the form ax+ by+ c = 0 Section B Q1.Draw the graph of the equation 2x+3y = 5.Check whether the points (-3,4) and (7,-3)

are the solutions of the given equation? Q2.Plot the points (2,1) and (5,-2) and verify from the graph that the straight line

joining these points passes through the point (-2,5) Q3.Express x in terms of y in the equation 3x + 2y = 12.Find the point where the line

represented by the equation 3x +2y =12 cuts x- axis . Q4.If x =3 and y = -1 is a solution of the equation 2x-5y+ k =0, then find the value of k. Q5. Write a linear equation 3x+2y = 18 in the form of ax+by+c = 0. Also write the values

of a,b,c. Are (4,3) and (1,2) solutions of this equation?

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Ch-8 (Quadrilaterals) Section A

MCQ (Q1 to 5) Q1. A diagonal of a rectangle is inclined to one side of the rectangle at 25°. The acute

angle between the diagonal is (a)55° (b)50° (c)40° (d)25° Q2. In a rhombus PQRS if PQ = PR, then angle PQR is (a)120° (b)90° (c)60° (d) none of these Q3.If PQRS is a parallelogram, the angle P – angle R is (a) 90° (b) 45° (c)60° (d) 0° Q4. Which of the following statements is true? (a) The diagonals of a rectangle are perpendicular. (b) Every square is rhombus. (c) The diagonals of a rhombus are equal. (d) A quadrilateral is a square if all of its sides are equal. Q5. A quadrilateral in which both pairs of opposite sides are parallel only is a (a)rectangle (b) square (c)parallelogram (d) rhombus Q6.The angles of a quadrilateral are in the ratio 1:2:3:4.Find all the angles of the quadrilateral. Q7.Can all the angles of a quadrilateral be acute angles? Give reason for your answer. Q8.State and prove mid point theorem. Q9.ABCD is a parallelogram.If ∠A = 65⁰ ,find ∠B +∠D. Q10.ABCD is a rectangle with ∠BAC = 42⁰.Determine ∠DBC. Section B Q1.D,E and F are the midpoints of the sides BC,CA and AB respectively of an equilateral

triangle ABC.Show that DEF is also an equilateral triangle. Q2.Prove that the angle bisectors of two adjacent angles of parallelogram intersect at

right angles. Q3.Prove that the diagonal divides a parallelogram into two congruent triangles. Q4.Two opposite angles of a llgm are (2x+6) ⁰ and (96-x) ⁰ .Find the value of x. Q5. ABCD is a parallelogram and E is the midpoint of BC.DE and AB on producing meet

at F. Prove that AF=2AB. NOTE: Do HHW on ruled sheets .

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SCIENCE PHYSICS

Chapter- 10 Gravitation

Section- A

1. A man feels himself lighter on moon than on earth. Why?

2. The relative density of a substance is greater than 1. What does it signify?

3. Why is a bucket of water lighter in water than when it is taken out of water?

4. An egg sinks in fresh water but floats in highly salty water. Give reason.

5. Explain why a truck or motor bus has much wider tyres.

Section - B

1. A block of wood floats in water at room temperature. If water is now heated what

change will occur in state of flotation?

2. A ball is thrown vertically upwards and reaches a maximum height in 3s. Find

(i) the velocity with which the ball was thrown upwards

(ii) the maximum height attained by the ball. Take g=10m/s2.

3. Explain why army tanks are provided with a steel belt over the wheels.

4. The volume of 50 g of a substance is 20 cm3. If the density of water is 1g/cm3, will the

substance float or sink?

5.(a) What do you mean by the terms mass and weight of a given object?

(b) It is said that mass of an object remains constant at all places, while weight may

change. Explain why.

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CHEMISTRY CHAPTER 2 : Is matter around us pure? CHAPTER 3 : Atoms and molecules

SECTION A 1. What is the advantage of fractional distillation over simple distillation? 2. Why is crystallisation better than evaporation for the separation of mixtures? 3. Name the separation technique by which we can obtain coloured components

from ink. Give two more applications of the technique used. 4. Sea water can be classified as a homogeneous as well as heterogeneous mixture.

Comment. 5. Suggest an experiment for the separation of constituents of the mixture

containing ammonium chloride , sand , iron fillings and sodium chloride. 6. How can we obtain different gases from air? 7. Rahul’s mother mixed oil and water in kitchen by mistake. Rahul told her that he

can separate the mixture. Name the technique used by the Rahul and explain how he will do it. Draw diagram and write the principle of this technique.

SECTION B 8. State any four postulates of Dalton’s atomic theory of matter. Which of his

postulates does not hold correct at present? 9. (a) Define atomicity.

(b) state the atomicity of the following molecules

(i) oxygen

(ii) phosphorus

(iii) sulphur

(iv) argon

10. Write the chemical formulae of the following:

a.) Magnesium chloride

b.) Sodium hydroxide

c.) Calcium fluoride

d.) Hydrogen sulphide

e.) Ammonium chloride

11. Calculate the molecular mass of the following:

a) Ethylene

b) Sulphur molecule

c) Phosphorus molecule

d) Nitric acid

e) Hydrochloric acid

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BIOLOGY

Chapter 14

Natural resources

1. Name two chemicals that are depleting ozone layer.

2. State 2 methods by which free nitrogen can be converted into nitrates.

3. What is Denitrification and Ammonification?

4 How is ozone useful for living beings on earth’s surface?

5. List some activities that increases the level of carbon dioxide in atmosphere.

6. Carbon dioxide is necessary for plants. Why do we consider it as a pollutant?

SECTION B

1. A motor car with its glass totally closed, is parked directly under sun. The inside

temperature of the car rises very high. Explain why?

2. Why does water need conservation even though large oceans surround the land

masses?

3. Write two applications of greenhouse effect and also write one major consequence

of green house effect.

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SCIENCE (MCQ)

1. In water, the proportion of oxygen and hydrogen by mass is: (a) 1:4 (b) 1:8

(c) 4:1 (d) 8:1

2. The atomic number of an element X is 13. What will be the number of electrons in its ion X3 ? a.) 11 b.) 15 c.) 16 d.) 10

3. The formula of a compound is X3Y. The valencies of elements X and Y will be: a.) 1 and 3 b.) 3 and 1 c.) 2 and 3 d.) 3 and 2

4. Which of the following has maximum number of atoms? a.) 18g of H2O b.) 18g of O2 c.) 18g of CO2 d.) 18g of CH4

5. The relative mass of a molecule is expressed in a) grams b) milligrams c) atomic mass units d) molecular units

6. The mass of a boy is 36 kg on earth. Mass of that boy on the surface of moon will be: a) 6 Kg b) 36 kg c) 54 kg d) 48kg

7. An object weighs 10N in air. When immersed fully in water, it weighs only 8N. The

weight of the water displaced by the object will be (a) 2N (b) 8N (c) 10N (d) 12N

8. Acceleration due to gravity of a body during free fall does not depend upon the

(a) mass of earth. (b) mass of body. (c) universal gravitational constant. (d) radius of earth.

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9. Two point masses at a given distance exert a gravitational interaction force on each other having a magnitude F. If one mass is doubled, the other mass is halved and the distance between them is tripled, the resulting interaction force has a magnitude (a) F (b) 4F (c) 4F/9 (d) F/9

10. When a solid body is gently put on a liquid, buoyant force acts on the solid body due to that liquid .The buoyant force is (a) in vertically downward direction. (b) in vertically upward direction. (c) parallel to the solid surface in contact with the liquid. (d) uniform in all directions.

11. The process of nitrogen –fixation by bacteria does not take place in the presence of

(a) Molecular form of hydrogen (b) Elemental form of hydrogen (c) Water (d) Elemental form of nitrogen

12. Biotic component of biosphere is not constituted by

(a) Producers (b) Consumers (c) Decomposer (d) Air

13. Oxygen is returned to the atmosphere mainly by (a) Burning of fossil fuel (b) Respiration (c) Photosynthesis (d) Fungi

14. Low visibility during cold weather is due to (a) Formation of fossil fuel (b) Unburnt carbon particles (c) Lack of adequate power supply (d) None of these

15. Growth of lichens on barren rocks is followed by the growth of (a) Moss (b) Ferns (c) Gymnosperms (d) Algae

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SOCIAL SCIENCE History & Political Science

Section- A

MULTIPLE CHOICE QUESTIONS

Q1 Who was Hitler’s propaganda minister ?

a) Goebbels

b) Reichstag

c) Darwin

d) Herbert Spencer

Q2 Name the peace treaty signed after World War I.

a) Enabling treaty

b) Treaty of friendship

c) Treaty of Versailles

d) Tripartrite treaty

Q3 Which was the most infamous film in which orthodox jews was stereotyped and

marked ?

a) The Eternal jew

b) The racial state

c) Third Reich of Dreams

d) Jews , the killer of Jesus Christ

Q4 When was Hitler born?

a) 1881

b) 1889

c) 1779

d) 1971

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GIVE ANSWER IN ONE LINE

Q1 How Hitler’s end came?

Q2 What was ‘Genocidal War’?

Q3 What was Reichstag?

Q4 How was Weimer Republic made to pay for the sins of old empire?

Section – B

1) Who is called the Father of the Constitution?

Dr. B.R Ambedkar

Sarojini Naidu

Motilal Nehru

Rajendra Prasad

2) Who is the president of the constituent Assembly?

Dr. B.R Ambedkar

Rajendra Prasad

3) Who was the first to draft a constitution for India?

Motilal Nehru

Dr B.R Ambedkar

Nelson Mandela

Q2) Give answers in one word:

A system of government by the whole population or all the eligible members of a

state, typically through elected representatives._________

The state of being free within society from oppressive restrictions imposed by

authority on ones behaviour or political views._______.

A formal and organizes choice by vote of a person for a political office or other

position.__________

Q3) Discuss the demerit of political competition.(any one)

Q4) State one ideal of the preamble of the Indian constitution.(any one)

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Geography & Economics

Section- A

MULTIPLE CHOICE QUESTIONS

1) The highest peak in the eastern ghat is :

Annai mudi

Kanchenjunga

Khasi

Mahendragiri

2) A continent and large body of land is:

Island

Coastal plains

Landmass

3) Which river is a east flowing river?

Kaveri

Narmada

Tapi

4) In which states of India, Indus basin is located?

Punjab

Maharashtra

Uttrakhand

Delhi

Q5) Give answers in one word:

1) Which river drains the central highlands?

2) What is the average altitude of Himachal?

3) In which hemisphere India is located?

4) How many states and union territories does India have?

5) Which is the only river of Indian desert of Rajasthan?

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Section – B

Q.1) The concept of green revolution was associated with the use of

a) Chemical fertiliser

b) Pesticides

c) HYV Seeds

d) All of the above

Q.2 Which is the nonfarm activity?

a) Dairy

b) Transporting

c) Shop keeping

d) All of these

Q.3 Decrease in the IMR( infant mortality rate ) of a country signifies

a) Increase in life expectancy.

b) Increase in GNP.

c) Economic development of a country.

d) Increase in the number of colleges in the country.

Q.4 Type of employment when people are not able to find jobs during some part of the year is called.

a) Disguised

b) Seasonal

c) Educated

d)Expected Q.5 Tertiary sector of economy includes.

A) Tourism

b) Forestry

c) Quarrying.

d) Agriculture.

Assignment

1. What is the role of education in human capital formation?

2. What are the merits and demerits of green revolution?

3. What is working capital? How is it important factor of production?