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Board Paper of Class 10 2012 Science (SET 3) - Solutions

General Instructions:
(i) The question paper comprises of two sections A and B. You are to attempt both the sections.
(ii) All questions are compulsory.
(iii) There is no over all choice. However internal choice has been provided in all the three question of five marks category. Only one option in such question is to be attempt.
(iv) All questions of section A and all questions of section B are to be attempted separately.
(v) Questions numbers 1 to 4 in section A are one mark questions. These are to be answered in one word or one sentence.
(vi) Question numbers 5 to 13 are two mark questions, to be answered in about 30 words each.
(vii) Question numbers 14 to 22 are three mark questions to be answered in about 50 words each.
(viii) Question numbers 23 to 25 are five mark questions, to be answered in about 70 word each.
(ix) Question numbers 26 to 41 in section B are multiple choice questions based on practical skills. Each question is a one mark question. You are to select one most appropriate response out of the four provided to you.
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