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CBSE Chemistry Sample Paper

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	Suraj Pandey UIET CSJM University Kanpur, Varanasi	+Fave Message
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General Instructions: 1. All questions are compulsory. 2. Marks for each question are indicated against it. 3. Question numbers 1 to 5 are very short-answer questions, carrying 1 mark each. Answer these in one word or about one sentence each. 4. Question numbers 6 to 12 are short-answer questions, carrying 2 marks each. Answer these in about 30 words each. 5. Question numbers 13 to 24 are short-answer questions of 3 marks each. Answer these in about 40 words each. 6. Question numbers 25 to 27 are long-answer questions of 5 marks each. Answer these in about 70 words each. 7. Use Log Tables, if necessary Use of calculators is not permitted. CHEMISTRY 2005 (Outside Delhi) Q1. . How many atoms can be assigned to its unit cell if an element forms (i) body centred cubic cell, and (ii) a face centred cubic cell? 1 Q2. . What would be the value of Van't Hoff factor for a dilute solution of K 2 SO4 in water? 1 Q3. . Express the relation between the half-life period of a reactant and its initial concentration for a reaction of nth order. 1 Q4. . Mention a chemical property in which methanoic acid differs from acetic acid. 1 Q5. . How is the basic strength of aromatic amines affected by the presence of an electron releasing group on the benzene ring? 1 Q6. . State that de Broglie relationship. How do de Broglie waves of a moving particle differ from electromagnetic waves? Or 2

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