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Class 10 CBSE Pre Board 2015 : Science 1 (Kendriya Vidyalaya (KV) No. 2, Raipur)

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KENDRIYA VIDYALAYA SANGATHAN; RAIPUR REGION SUMMATIVE ASSESSMENT -II (2014 - 15) CLASS X SCIENCE TIME 3 Hrs MM 90 General instructions: i)The question paper comprises of two sections ,A and B.You are to attempt both sections. ii)All questions are compulsory. iii) There is no overall choice . iv)Aii questions of section A and all questions of section B are to be attempted separately. v)Question numbers 1 to 3 in section A are one mark questions.Theseare to be answered in one word or one sentence. vi)Question numbers 4 to 6 are two mark questions, to be answered in about 30 words each. vii)Question numbers7 to 18 are three mark questions, to be answered in about 50 words each. viii)Question numbers 19 to 24 are five mark questions,to be answered in about 70 words each. Ix)Question number 25 to 33 of B section are multiple choice questions based on practical skills. Each questions is a one mark question.You are to select one most appropriate response out of the four provided to you. x) Question number 34 to36 of section B are two mark questions based on practical skills. SECTION A Q1.State two characteristic features of carbon which when put together give rise to large number of carbon compounds. Q2.List two functions performed by ovaries in a human female. Q3.Define principal focus of a concave mirror. Q4.What is biodegradable waste? If all the waste we generate is biodegradable, what impact may this have on the environment? Q5.An object is placed at a distance of 10 cm from a concave mirror. If its image is observed at 6cm from the mirror, calculate the focal length of the mirror.

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