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CHEMISTRY SCIENCE Paper -2 (Two Hours) Answer 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 answer. Attempt all questions from Section I and any four questions 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) Fill in the blank: [5] (i) The basicity of acetic acid is (ii) The compound formed when ethanol reacts with sodium is . (iii) Quicklime is not used to dry HCl gas because ... (iv) Ammonia gas is collected by . (v) Cold, dilute nitric acid reacts with copper to form ... (b) Choose the correct answer from the options given below. (i) (ii) How many number of atoms present in 1.6 g of methane? (I) 6.02 x 1022 (II) 3.01 x 1024 (III) 6.02 x 1024 (IV) 3.01 x 1023 Which of the following have more weight at STP? (I) One litre of chlorine (II) one litre of hydrogen (III) One litre of nitrogen (IV) One litre of oxygen 1 ICSE (Grade : X) | CHEMISTRY (SCIENCE Paper-II) | Pre Board Exam-II [5]
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