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KARNATAKA ICSE SCHOOLS ASSOCIATION ICSE STD. X Preparatory Examination 2024 Subject: CHEMISTRY (SCIENCE PAPER 2) Maximum Marks: 80 Time Allowed: Two hours Date: _________ 30-01-2024 General Instructions: Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during 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 A is compulsory. Attempt any four questions from Section B. The intended marks for questions or parts of questions are given in brackets [ ]. SECTION A (Attempt all questions from this Section.) Question 1 Choose the correct answers to the questions from the given options. (Do not copy the question, write the correct answers only.) i. Electrolysis of acidified water produces Oxygen gas at the anode. Which of the following ions move towards the anode? P. SO42Q. OH1R. O2(a) Only R (b) Both P and R (c) Both P and Q (d) Only Q ii. A compound X is heated in a dry test tube. The gas liberated is passed into another test tube containing potassium iodide solution that produces violet vapours. The liberated gas could possibly be? (a) (b) (c) (d) Oxygen Nitrogen dioxide Chlorine Sulphur dioxide 1 [15]
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