Chemistry :- Do the following questions 1. Why is it necessary to balance a chemical equation?

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1 Holiday Homework ( ) Class X English 1. Read English newspaper daily. Pick up two new words and write them with their meanings. 2. Write one original article for the school magazine. 3. Do unit 1, 2, 3 of the work book. 4. Read the o el Diary of a you g Girl y A Fra k. Also at h the o ie. Write hara ter sket h of ai hara ters (any two). 5. Prepare an attractive book cover/ book jacket.(8 inch X 10 inch) 6. Make a colourful book mark. Social Science 1. Prepare a project on any one of the following:- (a) Disaster Management (Pertaining to class X curriculum of Disaster Management only) Text book Together Towards a safer Indian part III OR (b) Popular Struggles and Movements (ch-5 Political Science) OR (c) Money and credit (ch-3 Economics) Points to be included in the project (1) Acknowledgment (2) Content (3) Introduction (4) contents (as per the topic) (5) conclusion (6) Bibliography The project report should be handwritten by the students themselves and comprise of not more than 15 pages. 2. Prepare a poster on A-3 size sheet on the following topics:- (1) Pollution of water in the locality OR 2) Depletion of forests and greenhouse effect. Maths 1. Activity 1- Make 5 different figures using tangrams. 2. Activity2- Make a meaningful solid object using different 3D- figures (at least 2). 3. Do assignments given in a serrate notebook for ch-1, 2 and 3. Science Biology Draw labeled diagram for the following. (Use a thin interleaf notebook). (i) Human Respiratory system. (Fig 6.9 pg. 104) (ii) Sectional view of human heart (fig6.10 pg.106) (iii)representation of transported exchange of oxygen and carbon dioxide.(fig 6.11 pg.106) (iv) Excretory system in human beings (fig 6.13 pg.110) (v) Structure of nephron (fig 6.14 pg.111) (vi) Structure of a neuron and Neuromuscular function (fig7.1 a & b pg.115) (vii)reflex arc (fig 7.2 pg.117) (viii)human Brain (fig 7.3 pg.118) Physics 1. Do all N.C.R.T exercises (solved) and unsolved. (Intext ques. also) of CH-12 electricity. 2. Write short notes on ch-14 sources of energy. Chemistry :- Do the following questions 1. Why is it necessary to balance a chemical equation?

2 2. Balance the following chemical equations:- 1) Mg + N 2 Mg 3 N 2 2) KCl 0 3 KCl ) Sl + CuCl 2 SlCl 3 + Cu 4) SO 2 +O 2 SO 3 5) Mg (OH) 2 + HCL MgCl 2 + H 2 O 6) HNO 3 + Ca(OH) 2 Ca(NO 3 ) + H 2 O 3. A copper coin is kept in a solution of silver nitrate for some time. What will happen to the coin and the colour of the solution? 4. What is lime water test for detection of carbon dioxide? 5. What is rancidity? Write the common method to prevent it. 6. During electrolysis of water, gas collected in one test tube is double than other why? 7. What is corrosion? State the conditions necessary for rusting of iron. 9. Represent decomposition reaction of ferrous sulphate with the help of a chemical equation. 9. Write the balanced chemical equations for the following reaction and identify the type of reaction in each case:- a) Thermite reaction, iron (III) oxide reacts with aluminium and gives molten iron and aluminium oxide. b) Chlorine gas is passed in an aqueous solution of potassium iodide to from potassium chloride solution and solid iodine. 10 Identify the reducing agents. 1) Fe 2 O 3 + 3Co 2Fe + 3Co 2 2) CuSo 4 + Zn Cu + ZnSo 4 3) CuO 2 + H 2 Cu + H 2 O 11 Identify the oxidizing agent. 1) Pb 3 O 4 + 8HCl 3PbCl 2 + Cl 2 + 4H 2 O 2) V 2 O 5 + 5Ca 2V + 5CaO 3) 3Fe + 4H 2 O Fe 3 O 4 + 4H 2 Chapter 16 Ques.1 What is carbonization? Ques.2 Why should we use coal and petroleum judiciously? Ques.3 How can you as an individual contribute or make a difference to the management of coal and petroleum? Ques.4 State the elements which are present in coal and petroleum. Ques.5 Name the products of combustion of coal and petroleum. Ques.6 List the importance of coal and petroleum in our life. Chapter -2 Ques1. Differentiate between Acids and Bases. Ques.2 Define PH. Ques.3 Write the chemical name and formulas of the following compound and also write their uses. (a) Caustic soda (b) Bleaching Powder (c) Baking Soda (d) Washing Soda (e) POP f) Gypsum. Computer Prepare a Power-point presentation not more than 15 slides and print it on the following topics according to your class section: 10 A & 10 B :- PPT on internet ( working, protocols( HTTP, TCP/ IP, HTML, WEB PAGE,WEBSITE) 10 C & 10 D:- PPT on the use of database its objects ( Table, Queries, Form, Report) 10 E, 10 F & 10 G:- PPT on Virus, worm, Trojan horse/ antivirus soft wares, Hackers & crackers, Information security provision in e- commerce ( cover all the topics and prepare 1 PPT)

3 Urdu 1. Write an original article for the school magazine. 2. Draw a picture of Poem 1 and do question (Amli kaam) on a chart paper. 3. Make a flash card on idioms with picture (Any 5). 4. Draw the picture of chapter Naki aur Badi on A-4 size sheet. 5. Make a ollage o Za a o Ka Ghar Hi dusta o A3 size sheet. French 1. Comment peut on sauver notre planet? (How to save our planet Earth?) Write one paragraph on it and show the various activities through collage making. 2. Ma professio fa orite et es projets d a e ir (My favorite Profession and my Future Project).Show through collage making (part time jobs etc.) 3. Mon Pussẻ temps favorite with collage (My leisure/ past time activities). 4. One Indian/ French recepe (Recette indienne/franḉaise) with collage (pictures). 5. Revision of all IX class Grammar topics plus 2 new topics of class X (Accord and Future anterieur). Hindi Sanskrit END

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