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ICSE Class X Board Exam 2002 : Chemistry

7 pages, 72 questions, 72 questions with responses, 115 total responses,    0    0
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Indian Certificate of Secondary Education (ICSE), New Delhi
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SCIENCE Paper 2 (Chemistry) - 2002 (One hour and a half) Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the Question Paper. The time given at the head of this paper is the time allowed for writing the answers. Section I is compulsory. Attempt any four questions from Section II. The intended marks for questions or parts of questions are given in brackets [ ]. S ECTION I (40 Marks) Attempt all questions from this Section Question 1 (a) Select from the list below the gas that matches the description given in each case and answer the questions that follow: Ammonia, chlorine, hydrogen chloride, sulphur dioxide. [6] (i) Gas A is a reducing agent which contains oxygen. (1) What is the name of gas A? (2) What will you observe if gas A is bubbled through acidified potassium dichromate solution? (ii) Gas B turns moist red litmus paper blue. (1) What is the name of gas B? (2) Write the equation for the reaction that takes place when gas B is passed over heated copper oxide. (iii) When gas C is mixed with gas B, dense white fumes are seen and there is no other product. (1) What is the name of gas C? (2) What is the name of the product of the reaction between gas B and gas C? Question 1 (b) Samples of the gases O 2, N2, CO2 and CO under the same conditions of temperature and pressure contain the same number of molecules represented by X. The molecules of oxygen (O2) occupy V litres and have a mass of 8 gms. Under the same conditions of temperature and pressure: (i) What is the volume occupied by: [6]

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Additional Info : Solved ICSE Board exam paper study guide - ICSE 2002 : SCIENCE Paper 2 (Chemistry) - I.C.S.E. Free Online Question Paper
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