KendriyaVidyalaya No. 2 Delhi Cantt Shift I

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1 KendriyaVidyalaya No. 2 Delhi Cantt Shift I WINTER BREAK HOLIDAY HOME WORK SESSION Class IX Mathematics 1. Find four different solutions of the equations: (a) -2x+3y = 6 (b) 5x-3y = 4 2. What is the degree of Linear equation in two variables? How many maximum solutions be there in linear equation in two variables. 3. Draw the graph of the following equation: (a) Y = 2x+1 (b) Y = x Represent the solutions of equation for -7x+3 = 9x+5 in (a) One variable (b) Two variable. 5. State and prove the conserve of mid-point theorem. 6. ABCD is a parallelogram and E is the mid point of AD. A line through D drawn parallel to EB, meets AB produced at F and BC at L. Prove that i) AF=2DC ii) DF=2DL 7. AM and CM are perpendiculars to the diagonal BD of a parallelogram ABCD. Prove that AM=CM

2 8. Cards with numbers 1,2,3,100 are placed in a box and mixed thoroughly. One card is drawn. What is the probability that the card drawn is a) a prime number less than 30? b) a multiple of 5 and 7? c) a multiple of 5or 7? 9. When two coins are tossed simultaneously, what is the probability of getting at most one head? 10. The probability of a sure event is zero? State true or false and justify your answer? 11. Three coins are tossed simultaneously 200 times with the following frequency of different outcomes: Outcomes 3 tails 2 tails 1 tail No tail Frequency Find the probability of getting: a) At least 1 tail b) At most 1 tail.

3 Q1) Write down the formulae of : SCIENCE SECTION- A a) sodium oxide b) aluminium chloride c) aluminiumsulphide d) magnesium hydroxide e) copper nitrate f) calcium carbonate g) magnesiumsulphate h) ammonium suphate i) sodium carbonate j) carbonic acid k) calcium nitride l) ammonium carbonate m) zinc phosphate n) aluminiumsulphate o) ferric chloride p) bariumsulphate q) calcium phosphate Q2) Calculate the molecular mass of the following a) H 2 CO 3 b) C 2 H 5 OH c) MgSO 4 d) C 2 H 6 e) CO 2 Q3) Draw atomic structures of first 18 elements. Q4) What is Rutherford s gold foil experiment. Write the observations, conclusions and shortcomings of Rutherford s model. Q5) Write the rules which determine the distribution of electrons in various shells. Q6) Explain with examples: a) Atomic number b) Mass Number c) Isotopes d) isobars Q7) Write differences between Pteridophytes and Phanerogams. Q8) What are the differences between monocots and dicots. Q9) Write differences between Gymnosperms and Angiosperms. Q10) Write differences between Annelids and Arthropods. Q11 Write differences between Amphibians and Reptiles. Q12) What are the differences between animals belonging to the Aves group and Mammalian group. Q13) State Archimedes principle and give its three applications.

4 हह द श तक र न अवक श ग ह क मय क - नव Note- सब क मयA-4 श ट ऩय कय. १.द ववत म सत र क ककस ब ऩ ठ क CD. २.अऩन व म ज नवय म ऩ ऩय ववश ष ज नक य च त र तभक र ऩ स द जजम. ३.ब यत भ फ रश रभ क सभस म ऩय वववयण त भक एव च त र त भक वववयण त म य क जजम. ४.भ घ आम ऩ ठ क आध य ऩय अततचथ द व बव ऩय च त र त भक प इर च त र फन ए. ५.ऩत र *द क नद य भ फढत जभ ख य क ववत ऩय च त व मक त कयत ह ए ककस सभ य ऩत र क स ऩ दक क ऩत र लरख. *अखखर ब यत म हह द व द-ववव द ततम चगत भ थभ ऩ यस क य प त ववज त लभत र क एक फध ई ऩत र लरख.

5 SOCIAL STUDIES 1. Make a project showing flora and fauna. 2. Map Work- In the map of India, fill the followingsa) Locate the tribes of India. b) Annual rainfall of India. c) National Park, wildlife reserves and bird sanctuaries of India. d) Different kind of forests of India. e) Density of population of India. 3. Prepare the MCQs from the following chaptera) History and Sport: The Story of Cricket. b) Natural Vegetation and Wildlife. c) Working of Institutions. d) Food Security in India. Puppets (With waste material) ART EDUCATION

KV ( AFS ), UTTARLAI MIND EXERCISE FOR WINTER BREAK

KV ( AFS ), UTTARLAI MIND EXERCISE FOR WINTER BREAK 2018-19 Class : VI All questions are to be done in the English notebook only. Q.1. Narrate a situation from your experience where you have been fooled