Rich Harvest Public School HOLIDAY HOMEWORK (2018-19) CLASS: X *Note: The holiday homework should be done on separate registers/notebooks as per the given instructions.submit the same by 6 th july 2018 ENGLISH: Q1. Long Reading text The story of my life 1. Read the chapters 1 to 10 2. Choose 10 incidents that you like and rewrite them in your own words. Q2. Make a scrapbook on William Shakespeare s Julius Caesar. Include the synopsis and characters sketches of any 4 characters (paste relevant pictures and write famous quotes from the play) Q3. You are Rekha living at S-453 Raghupura, New Delhi. Some women have been robbed of their gold chains and earrings in the main market of your block during rush hours by young boys riding bike. You are very much worried about such incidents. Write a letter to the Editor of a local newspaper to draw attention of the authority concerned about it. HINDI: 1. त लस द स ज क र मच रत म नस क च प ई स एक स च एलबम त य र क जए! 2. द ल शहर क क छ स थ न क व त त वण न कर! 3. द ल नगर नगम क स रचन तथ उसक क य क वण न कर! 4. ग त म द न म प तक म ल लगन ह! उसक व पन त य र क जए! 5. सव श अ भय न पर एक व पन त य र क जए! MATHS: Q.1 Using Euclid s Division Lemma, prove that n 3 n is divisible by 6 for any positive integer n. Q.2 Show that one and only one out of n, n+4, n+8, n+12 and n+16 is divisible by 5, where n is any positive integer. Q.3 Prove that the product of three consecutive positive integers is divisible by 6. Page 1 of 6
Q.4 15 pastries and 12 biscuit packets have been donated for a school fete. These are to be packed in several smaller identical boxes with the same number of pastries ant biscuit packets in each. How many biscuit packets and how many pastries will each box contain? Q.5 A mason has to fit a bathroom with square marble tiles of the largest possible size. The size of the bathroom is 10 feet by 8 feet. What would be the size in inches of the tiles required that has to be cut and how many such tiles are required? Q.6 Two brands of chocolates are available in pack of 24 and 15 respectively. If I need to buy an equal number of chocolates of both kinds, what is the largest number of boxes of each kind I would buy? Q.7 In a seminar, the number of participants in Hindi, English and Mathematics are 60, 84 and 108 respectively. Find the minimum number of rooms required if in each room the same numbers of participants are to be seated and all of them being in the same subject. Q.8 A circular field has circumference of 360km. Three cyclists start together and can cycle 48, 60 and 72km a day, round the field. When will they meet again? Q.9 Prove that 3 7 is irrational. Q.10 Can 72 and 20 respectively be the LCM and HCF of two numbers. Write down the reason in support of your answer. Q.11 Find the largest number that will divide 445, 572 and 699 leaving remainders 4,5 and 6 respectively. Q.12 Find the smallest number which when increased by 17 is exactly divisible by both 520 and 468. Q.13 By the method of Prime factorisation, find the HCF and LCM of 84, 90 and 120. Q.14 Without actually performing the long division, state whether the following rational numbers will have a terminating decimal expansion or non-terminating repeating decimal expansion. I. 125 441 II. 987 10500 III. 23 2048 IV. 54 343 V. 127 910 Q.15 Find the zeros of the following polynomials and verify the relationship between their zeros and their coefficients:- I. f(x) = 4 3x 2 + 5x 2 3 II. p(x) = abx 2 + (b 2 ac)x bc III. q(x) = x 2 + 1 6 x 2 IV. r(x) = 6x 2 + 6 13x Q.16 If the sum of the zeros of the quadratic polynomial f(t) = kt 2 + 2t + 3k, is equal to their product, find the value of k. Page 2 of 6
Q.17 If α and β are the zeros of the quadratic polynomialf(x) = x 2 x 4, find the value of 1 α + 1 β αβ. Q.18 If α and β are the zeros of the quadratic polynomial f(x) = x 2 p(x+1) c, show that (α + 1)(β+1) = 1 c. Q.19 Find a cubic polynomial with the sum, sum of the product of any of its two zeros taken at a time and product of all of its zeros are 4, 5 and 2 respectively. Q.20 Find the zeros of the polynomial f(x) = x 3-5x 2 16x + 80; if two of its zeros are equal in magnitude but opposite in sign. Q.21 What must be added to the polynomial f(x) = x 4 + 2x 3 2x 2 + x - 1 so that the resulting polynomial is exactly divisible by x 2 + 2x 3? Q.22 If the remainder on division of x 3 + 2x 2 + kx + 3 by x 3 is 21, find the quotient and the value of k. Hence, find the zeros of the cubic polynomial x 3 + 2x 2 + kx -18. Q.23 Find the quadratic polynomial with the given numbers as the sum and the product of its zeros I. 2 + 3, 1 2 3 II. 2, 1 3 III. 0, 5 Q.24 Find a quadratic polynomial whose zeros are :- I. 2, - 3 2 II. 2 + 3, 2-3 III. 3 3, 3+ 3 5 5 IV. 2, 2 2 Q.25 If one zero of the polynomial (a 2 + 9)x 2 + 13x + 6a is reciprocal of the other, find the value of a. Q.26 If one of the zeros of the polynomial x 3 + 2x 2 x 2 is - 2. Find its other zeros. SCIENCE: BIOLOGY 1. Which cell organelle is the site of photosynthesis? 2. What is the difference between digestion of heterotrophs and saprotrophs? 3. Name the enzyme present in saliva, what is its role in digestion? 4. Give two functions of bile juice, from which organ it is released? 5. Name any three important enzymes of pancreas and the food component on which they act. 6. Where from intestinal juice come to the small intestine? 7. What is the function of intestinal juice? 8. What are the simplest digestive product of carbohydrate, fats and protein? 9. Name the finger like projections of small intestine and what is the necessity of such type of projections in digestive system? 10. Name the site of anaerobic and aerobic respiration in a cell. Page 3 of 6
11. A three carbon compound is the common product of both aerobic and anaerobic pathway. What is that? 12. Why do we get muscle cramp after vigorous exercise? 13. Distinguish between lactic acid and alcoholic fermentation? 14. Name the energy currency molecule of cell? 15. The breathing rate of aquatic animals is high, why? 16. What is the function of mucus and fine hair in nostrils? 17. Give the function of network of capillaries on alveoli. 18. Name the main carrier of oxygen and carbon dioxide in man. 19. Why does haemoglobin molecule act as efficient carrier of oxygen than diffusion process? 20. Give example of any three substances transported by plasma. 21. Name the organ that- (a) pushes blood around body (b) make blood to reach to tissues. 22. Name the blood vessel that carries blood from heart to lungs and from lungs to heart. 23. How many heart chambers are there in (a) fish (b) frog (c) lizard (d) crocodile (e) birds (f) man? 24. Give two function of lymph. 25. What is the direction of flow of water in xylem and food in phloem? 26. Why do plants need less energy than animals? 27. Name the food component whose digestion produce nitrogenous waste? 28. Which is the functional unit of kidney? CHEMISTRY 1. What happens chemically when quick lime is added to water? 2. How will you test for the gas which is liberated when HCL reacts with an active metal? 3. What is an oxidation reaction? Is it exothermic or endothermic? Give one example of oxidation Reaction. 4. Give an example of photochemical reaction. 5. Give an example of a decomposition reaction. Describe any activity to illustrate such a reaction by heating. 6. Why is respiration considered as exothermic process? 7. Balance the following chemical equation. Fe(s) +H2O(g) = Fe3O4 + H2(g) MnO2 + HCL = MnCl2 + Cl2 + H2O HNO3 + Ca(OH)2 = Ca(NO3)2 + H2O 8. On what basis is a chemical equation balanced? 9. State any two observations in an activity suggesting the occurrence of a chemical reaction. 10. Name a reducing agent which may be used to obtain manganese from manganese dioxide. 11. What change in colour is observed when silver chloride is left exposed to sunlight? Also mention the type of chemical reaction. Page 4 of 6
12. Define a combination reaction. Give one example of an exothermic combination reaction. 13. What is observed when a solution of potassium iodide is added to lead nitrate solution? 14. What type of reaction is this? Write a balanced chemical equation for this reaction. 15. Distinguish between an exothermic and an endothermic reaction. 16. Distinguish between a displacement and a double displacement reaction. 17. Identify the type of reaction in the following: Fe + CuSO4(aq) = FeSO4(aq) + Cu(s) 2H2 + O2 = 2H2O PHYSICS 1. Name the unit of (a) electrical resistance (b) resistivity 2. Define One Ohm 3. Define Resistivity 4. Determine the direction of conventional current? 5. What is electrical power? Write its unit. 6. You take two resistors of resistance 2R and 3R and connect them in parallel in an electric circuit. Calculate the ratio of the electrical power consumed by 2R and 3R? 7. A small bulb has a resistance of 2Ω when cold. It takes up a current of 0.4 A from a source of 4V and then starts glowing. Calculate (i) the resistance of the bulb when it is glowing and (ii) Elaborate on the reason for the difference in resistance? 8. Define resistance and resistivity and also give the relation between them. Explain the dependence of resistance on temperature. 9. A bulb is rated at 330V- 110W. What do you think is its resistance? Three such bulbs burn for 5hrs at a stretch. What is the energy consumed? Calculate the cost in rupees if the rate is 70 paise per unit? 10. Calculate the resistance of 2 km long copper wire of radius 2 mm. (Resistivity of copper = 1.72 x 1 0-8 ) SOCIAL SCIENCE: Q1.Why do you think average income is an important criterion for development? EXPLAIN. Q2. Write a paragraph on your notion of what should India do, or achieve, to become a developed country. Q3. Why is the issue of sustainability important for development? Q4. Explain the difference between primary, secondary and tertiary sectors, giving the relevant examples? Q5. Why do you think MGNREGA 2005 is referred to as RIGHT TO WORK? Q6. Distinguish between Organized and Unorganized sectors? Q7. Explain Black soil and name three states having black soil and the crops grown in it? Q8. Define soil erosion. What steps to be taken to control soil erosion in hilly areas? Q9. Distinguish between: A). Renewable and Non Renewable resources. B). Kadar and Bangar. C). Federal form of government and Unitary one. Page 5 of 6
Q10. What are the different forms of power sharing in modern Democracies? Q11. Is power sharing desirable? Give reason. Q12. Define Federalism and write down the key features? Q13. Locate the following states on the political map of India: Manipur, Sikkim, Chhattisgarh and Goa. PROJECT WORK: 1) DO A DETAILED STUDY ON ELECTIONS IN INDIA. 2) COLLECT 10 NEWSPAPER CUTTINGS RELATED TO GOVERNMENT POLICIES OR DECISIONS. GUIDELINES FOR THE PROJECT a. Project to be done on A-4 size sheet b. Project should be hand written for 15 pages c. On the first page student performa to be given - Name, Class, Roll No., Name of the School d. Acknowledgement e. Content or Index f. At the last Bibliography or references g. Newspaper cuttings, maps, diagram, illustrations are must X XXXXXXXXXXXXXXXXXXXXXXXXX Page 6 of 6