DELHI PUBLIC SCHOOL

VISAKHAPATNAM STEEL PLANT

October & November 2017 ASSIGNMENT

Subject: ENGLISHClass: IX

I.Read the paragraph, find the errors and rewrite the error along with the correct answer. Dance is an well known art form (a)

But dance as a therapy is not known for many .(b)

Dance therapy involve a synthesis of grace (c )

and vibrance of both classical or folk moments (d)

in a innovative way (e)

II Rearrange the jumbled words into meaningful sentences.

Eg: put into/ as the/ at low/ baby can/ he is/ as soon/ water/ toddle/ tide

As soon as the baby can toddle he is put into water at low tide.

  1. Water/ the baby/ in the / plays/ sits and
  2. Grows older/ he is/ to wade/ as he/ low tide/allowed/ about at
  3. Keep a watch/ into/ he does not/ his elders/so that/stray/ deep water
  4. Make small/ learns/ soon/ swim/ he may/ mistakes/ but / to
  5. Are also/ canoes/ on their/ children/ own/ the/ given small/ to manage

III. Fill in the blanks with suitable words:

Ants (1) ______small insects and are normally black (2)_____ brown in colour. They are very active and strong and have (3) ______highly developed social organization. They are never tired (4) ____ working. Ants have great unity and work (5)_____ a team throughout summer, gathering grain and storing (6) ____ up for winter. We can learn a great deal (7)______these insects. They teach us (8)_____ there is no short cut to success.

IV. Fill with the passive form of the verbs given in brackets:

It (a) ______(report) that ragging is on the rise these days. Incidents of ragging (b)______(come) to light in St. Stephen’s College recently. Five senior students (c)______(expel) from college hostel for their involvement in indecent ragging. The college authorities (d)______(hold) in an emergency meeting tomorrow to take up stringent measures for the same.

V. Describe the troubles and confusion faced by George when his watch stopped working on a winter morning?

VI. What happened when the author steered the boat towards a fishing punt? Explain.

MATHEMATICS

  1. Find three solutions of the equation 2x + y = 3.
  2. Draw the graph of the equation 2x + 3y = 6. From the graph read the value of x wheny = 4 .
  3. Show that the points A ( 1,2) , B (-1 , -16) and C (0,-7) lie on the graph of the linear equation y = 9x – 7.
  4. ABCD is a quadrilateral and BE ǁ AC and BE meets DC produced at E. Show that ar () = ar (ABCD)
  5. In a parallelogram ABCD , AB = 10 cm and the altitude corresponding to sides AB and AD are respectively 7 cm and 8cm. Find AD.
  6. The sides of a triangular plot are in the ratio of 3:5:7 and its perimeter is 300 m. Find its area.
  7. The diagonals of □ABCD , AC and BD intersect at O. Prove that if BO = OD then ar () = ar().
  8. For a mathematics test given to 15 students, the following marks( out of 100 ) are recorded: 41, 39, 48 , 52, 46 , 62 , 54, 40, 96, 52, 98 , 40 , 42, 52, 60. Find the mean , median and mode of the data.
  9. The mean of 16 numbers is 8. If 2 is added to every number then what will be the new mean?
  10. The marks of 30 students of a class obtained in a test ( out of 75) are given below : 42, 21, 50, 37, 42, 37, 38 , 42, 49, 52, 38, 53, 57, 47, 29, 59, 61, 33, 17, 39, 17, 49, 42, 39, 14, 7, 27, 19, 54, 51. Form a frequency table with equal class intervals , one of them being ( 0-10). Construct a histogram and frequency polygon for the data.
  11. Determine the median of 24, 23, a, a-1, 12, 16 where a is the mean of 10, 20 , 30, 40, 50.
  12. If the mean of 10, 12, 18, 13, p and 17 is 15 , find the value of p.
  13. Find the median of first 10 prime numbers.
  14. The ages ( in years) of 8 students of class IX are as follows: 14, 15, 16, 14, 15, 15 , 16,15. Find the modal age and mean age.
  15. Draw a histogram for the following data

Marks / Number of Students
0-10 / 3
0-20 / 5
20-30 / 8
30-40 / 10
40-50 / 7
50-60 / 2

PHYSICS

  1. A woman is wearing sharp heeled shoes. If the mass of the woman is 50 kg and the area of one heel is 1m2, calculate the pressure exerted on the ground when the woman stands on just one heel. (g= 10m/s2)
  2. The density of a body is 800 kg/m3. Will it sink or float when dipped in a bucket of water?

( density of water=1000 kg/m3)

  1. Why do we feel light on our feet when standing in a swimming pool with water up to our armpits?
  2. Define work. How much work is done in lifting 200 kg of water through a vertical height of 6 m?
  3. Define energy. What is its SI unit?
  4. How much work should be done on a bicycle of mass 20 kg to increase its speed from 2m/s to 5m/s?
  5. If acceleration due to gravity is 10m/s2, what will be the potential energy of a body of mass 250 kg is kept at a height of 5 m?
  6. What type of energy is possessed:

a)By the stretched rubber strings of a catapult?

b)By the piece of stone which is thrown away on releasing the stretched rubber strings of catapult?

BIOLOGY

  1. Who gave five kingdom classifications of organism? Name all the kingdoms too.
  2. Draw a labelled diagram of the following:

a)A cyanobacteria

b)A saprophyte which is used in making antibiotics.

c)A protist having flagella as locomotory organ.

  1. Give the characteristic features of bryophytes.
  2. Differentiate between phanerogams and cryptogams.
  3. Give at least five differences between dicot and monocot plants.
  4. What do you mean by diploblastic and triploblastic animals?
  5. What is coelom? On the basis of coelomic cavity animals are divided in to how many types? Explain.

CHEMISTRY

  1. To verify law of conservation of mass , what should be the form of sodium sulphate and barium chloride? Why?
  2. To which type of reaction the law of conservation of mass is not applicable and why?
  3. An element Y forms an oxide with the formula Y2O3.
  1. State the valency of Y.
  2. Write the chemical formulae of its (i) sulphate (ii) chloride.
  1. What is the difference between molecule of an element and molecule of a compound. Illustrate with examples.
  2. Define formula unit mass of a compound. How does it differ from molecular mass?

Calculate formula unit mass of Na2CO310H2O and CuSO4.

  1. Write balanced equations for the following:

i)Potassium chlorate  potassium chloride + oxygen.

ii)Aluminium hydroxide + sulphuric acidaluminiumsulphate +water.

iii)Manganese dioxide+ hydrochloric acid manganese chloride +chlorine +water.

iv)Lead nitrate +potassium iodide lead iodide+ potassium nitrate

SOCIAL SCIENCE

Write short notes on

1. Kal Baisakhi. 2. Mango Shower 3. ITCZ 4. Western Cyclonic Disturbances

2. Distinguish between Advancing Monsoon and Retreating Monsoon. Show the movements of these two winds in outline maps of India.(Use one map for each)

3. Explain the importance of monsoon rain in India.

4Define:- 1.Reserved constituency . 2. Incumbment 3.Voter’s list 4. Turn out

5. Describe the procedure of voting on the polling day.

6. Why does poverty line vary with time and place?

7. Which social economic groups are more vulnerable to poverty?

विषय-हिन्दी

(1)भारत के पाँच प्रमुख वैज्ञानिकों की सूची उनके योगदानों के साथ बनाइए।

(2)भारत के किन किन व्यक्तियों को नोबेल पुरस्कार मिला है? पता लगाइए और उनके बारे में संक्षेप में लिखिए।

(3)भारत के मानचित्र में दिखाऐंकि धान की फसल प्रमुख रूप से किन-किन प्रांतों में उपजाई जाती हैं?

(4)‘मेरे जीवन का लक्ष्य’ और ‘हमारी नदियाँ और हम’ पर लगभग 100 शब्दों में अनुच्छेद लिखें।

(5)पाठों से 10 अनुस्वार, 10 अनुनासिकऔर10 नुक्ता वाले शब्द को छाँटकर लिखिए।

తెలుగు తొమ్మిదవ తరగతి

1 క్రింది వ్యాసములను వ్రాయుము.

  1. ప్రచారసాధనాలు 4.జాతీయసమైక్యత
  2. అడవుల సంరక్షణ 5.లలితకళలు
  3. నీకు నచ్చిన కవి 6.క్రీడలు- ప్రయోజనం

2. క్రింది సామెతలకు ధర్మములు/ అర్థములు వ్రాయుము.

1. అంత్యనిష్టురం కన్నా ఆది నిష్ఠురం మేలు. 2. అతి వినయం ధూర్త లక్షణం.

3. ఆలస్యం అమృతం విషం. 4. ఉట్టికెక్కలేనమ్మ స్వర్గానికెక్కినట్లు.

5. ఏ ఎండకాగొడుగు. 6. కోటివిద్యలు కూటి కొరకే.

7. చేతులు కాలిన తరువాత ఆకులు పట్టుకున్నట్లు. 8. తీగ లాగితే డొంక కదిలినట్లు.

9.నోరు మంచిది అయితే ఊరు మంచిదౌతుంది. 10. పూవు పుట్టగానే పరిమళిస్తుంది.

विषय- संस्कृत (2L )

1. तरवे नमोSस्तु पाठ के श्लोको के अन्वय लिखिए ।
2) दीर्घः सन्धि, गुणसन्धि, वृद्धिः सन्धि तथा यण् सन्धि पाँच- पाँच उदाहरण लिखकर विच्छेद भी करिए ।

3) व्यञ्जन सन्धि – वर्गीयप्रथमाक्षराणां तृतीये परिवर्तनम् , च् पूर्वात् त् स्थाने च् , ल् पूर्वात् त् स्थाने ल्

नियमों के पाँच- पाँच उदाहरण लिखिए ।

4) तुमुन् ,क्त्वा, तथा ल्यप् प्रत्ययों के पाँच- पाँच उदाहरण लिखिए ।

5)निम्नलिखित शब्दों के धातु प्रत्यय अलग करके लिखें –पठित , भक्षित , उदित ,स्मृत , नत ।
कृतवान् , पठितवान् , दत्तवान् , आनीतवान् , खादितवान् ।