Please do not forget to take adequate precautions against the relentless heat and drink plenty of water.

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1 SIS/ /CIR-4/ACADEMICS Date-21st April 2017 (Friday) Dear children, Summer Holidays start from 22 nd April 2017 (Saturday) We are sure that you must have started making plans to visit your grandparents, relatives and friends, watching television during the day, taking a dip in the swimming pool and joining some activity classes with your friends. We wish that you enjoy every minute of this long break with your family and friends. It will be great if you are able to find time to visit museums and monuments, learn new things, explore new areas near your house, play indoor and outdoor games, read as many story books as you can,help your parents and grandparents, go for morning walk and play in the park in the evenings during your long summer break. Please do not forget to take adequate precautions against the relentless heat and drink plenty of water. We are giving you a Summer Holiday Homework which you can do during the noon time. Do them neatly and submit to your teachers after the vacation. Wishing all of you a very enjoyable and fun-packed summer break. Summer Holiday Homework Class-X Subject English Hindi Math Science Homework Write a brief note on Anne frank and Holocaust, covering the following aspects 1) Conditions prevailing during Holocaust 2) Anne s experiences Early life, Life in annex 3) Character sketches of any two favouritecharacters 4) Add a section about the various people who helped the Jews during the war.,slseqgkojksa o yksdksfdr;ksa dh ryk kdjvfkzfyf[k, tksvkidhikb~;iqlrdesags A ¼yxHkx 50½ Worksheet Worksheet S St. Search any story of Community and Conservation ( Wildlife and Forest ) in India. Write a brief report on it. Note-School reopens on 14 th June 2017 (Wednesday). Attendance on reopening day is compulsory. School Office will remain open during summer holidays from 8.00 am to 2.00 pm. Kindly clear your ward s 1 st Term Tuition Fees before 25 th April For the smooth functioning of transportation, we would like to inform you that pay Transport Fees (Term I) before 25 th April 2017, reserve your ward s seat and collect the bus pass.

2 Holiday Homework Class 10 Worksheet Ch. Real numbers Q.1 Use Euclid s division algorithm, find HCF of i) 504 and 476 ii) 455 and 84 Q,2 Using Euclid s division algorithm, find HCF of 56, 96 and 404. Q.3 Prove that n 2 n is divisible by 2 for every positive integer n. Q.4 Show that n 2-1 is divisible by 8, if n is an odd positive integer. Q.5 Using Euclid s division lemma, prove that for any positive integer n, n 3 n is divisible by 6. Q.6 Prove that the product of three consecutive positive integers is divisible by 6. OR Prove that one of the every three consecutive positive integers is divisible by 3. Q.7 If x and y are odd positive integers, then x 2 + y 2 is even but not divisible by 4. Q.8 The product of two consecutive positive integers is divisible by 2. Is this statement true or false? Give reason. Q.9. The numbers 525 and 3000 are both divisible only by 3, 5, 15, 25 and 75. What is the HCF (525, 3000)? Justify your answer. Q.10 Show that one and only one out of n, n+2 or n+4 is divisible by 3, where n is any positive integer. Q.11 Find the greatest number that will divide 445, 572 and 699 leaving remainders 4, 5 and 6 respectively. Q.12 Using fundamental theorem of arithmetic, find the HCF of 26, 52 and 91. Q.13 Using prime factorization method, find HCF and LCM of 72, 126 and 168. Also show that HCF X LCM product of the three numbers. Q.14 Prove that is an irrational number. Q.15 Prove that p - q is an irrational number, where p and q are primes. Q.16 Prove that 3-5 is an irrational number. Q.17 Prove that 2-3 is an irrational number. Q.18 A rational number in its decimal expansion is What can you say about the prime factors of q, when this number is expressed in the form p? Give reasons. q Q.19 Write the condition to be satisfied by q so that a rational number p has a terminating decimal q expansions. Q.20 The decimal expansion of the rational number decimals? will terminate after how many places of

3 Science Worksheet 1. From the symbol P, State: i. Mass number of Phosphorous ii. Atomic number of Phosphorous iii. Electronic configuration of Phosphorous. 2. Fill in the Z A P E N SYMBOL VALENCY following blanks: Match the Following: Column A Column B i. Melting of wax [ ] a. Chemical change ii. Digestion of food [ ] b. Physical change iii. Energy is absorbed during reactions [ ] c. Endothermic reaction iv. Combustion [ ] d. Oxidation reaction v. Burning of candle [ ] e. Both physical and chemical change 4. Match the following Column A Column B i. S + O 2 SO 2 [ ] a. Displacement ii. CaCO CaO + CO 2 [ ] b. Combination iii. Zn + CuSO 4 ZnSO 4 + Cu [ ] c. Decomposition iv. CH 4 + O 2 CO H 2O [ ] d. Oxidation v. BaCl 2 + Na 2SO 4 BaSO 4 + 2NaCl [ ] e. Double decomposition 5. Where can we find stomata in a monocot leaf? 6. What is the importance of photosynthesis? 7. What is Photosynthesis? Give its equation. 8. What is Life process? Give examples.

4 9. Match the following: i. Chlorophyll [ ] a. Excretion ii. Releasing of energy [ ] b. Transportation iii. Perpetuation of race [ ] c. Green iv. Most important life process [ ] d. Reproduction v. Heart, Blood and blood vessels [ ] e. Photosynthesis vi. Maintains water and ionic balance [ ] f. Respiration 10. Match the following: i. Leaf Lamina [ ] a. Stalk of the leaf ii. Petiole [ ] b. traps solar energy iii. Leaf margin [ ] c. gives shape to leaves iv. Node [ ] d. Reticulate venation v. Internode [ ] e. distance between nodes vi. Network of veins [ ] f. leaf develops 11. Match the following: i. Mesophyll tissue [ ] a. regularly arranged cells ii. Palisade parenchyma [ ] b. have chloroplasts in their tissue iii. Spongy Parenchyma [ ] c. Exchange of gases iv. Stomata [ ] d. Xylem and Phloem v. Stomatal pore [ ] e. irregularly arranged cells vi. Vascular bundles [ ] f. stoma 12. Draw a neat labelled diagram of leaf and its anatomy. 13.

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