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Science - Paper - 2 CHEMISTRY Guess paper ( One hour and a half ) Answers to this Paper must be written on the separate paper. The time given at the head of this paper is the time allowed for writing the answers. Attempt all questions from Section I and any four from Section II The intended marks for questions or parts of questions are given in brackets [ ]. SECTION - I ( 40 Marks ) Attempt all questions from this section Question 1 A. From the following list of substances, choose the one substance in each case which matches the description (1) to (6) given below. (Write down the names exactly as they are given in the list. Do not write formulae.) ammonium nitrate, calcium hydrogen carbonate, copper carbonate, lead carbonate, lead nitrate, potassium nitrate, sodium carbonate, sodium hydrogen carbonate, zinc carbonate. 1) A hydrogen carbonate which exists in the solid state. 2) A carbonate not decomposed by heat. 3) A green coloured carbonate which turns black on heating. 4) A nitrate which gives off only oxygen when heated. 5) A nitrate which on heating decomposes into dinitrogen oxide (nitrous oxide) and steam. 6) A nitrate which gives off oxygen and nitrogen dioxide when heated. [6] B. Write balanced equations for the following reactions : 1) Iron (III) chloride solution with sodium hydroxide solution. 2) Ammonium chloride and warm sodium hydroxide solution. 3) Zinc hydroxide solution and sodium hydroxide solution. 4) Hydrochloric acid and sodium hydroxide solution. 5) Aluminium metal and sodium hydroxide solution. i.testseries@gmail.com Mr. Rajendra Burriwar, M.Sc., B.Ed. [5] Ph : +919892196963
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