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ICSE Class X Board Exam 1999 : Chemistry

6 pages, 65 questions, 65 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) - 1999 (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) Chlorine is subject of the following questions: [5] (i) What is the atomicity of chlorine? (ii) Name the compounds formed when chlorine reacts with water (formulae are NOT acceptable.) (iii) Chlorine reacts with white phosphorous forming phosphorous trichloride and phosphorous pentachloride. Write balanced equations for the formation of each of these compounds. Question 1 (b) Answer the following questions, relating your answers only to salts in the list given below: Anhydrous calcium chloride, copper sulphate-5-water, sodium carbonate-10- water. [5] (i) Which compound is efflorescent? (ii) Which compound is blue in colour? (iii) Which compound is deliquescent? (iv) What would be seen on mixing a solution of calcium chloride with a solution of sodium carbonate? (v) Write the balanced equation for the reaction occurring when a solution of calcium chloride is mixed with a solution of sodium carbonate. Question 1 [5]

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Additional Info : Solved ICSE Board exam paper study guide - ICSE 1999 : SCIENCE Paper 2 (Chemistry) - I.C.S.E. Free Online Question Paper
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