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VIBGYOR HIGH First Term Examination AY 2019-2020 CHEMISTRY Grade: IX Max. Mark: 80 Date : 16/09/2019 Time Allowed: 2 hour INSTRUCTIONS: 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. The intended marks for the questions or parts of questions are given alongside the questions. This question paper contains 6 pages. Section l (40 Marks) Attempt all questions from this section (a) i ii iii iv v (b) i ii iii Question 1 [40] Complete the following statements: [5] A symbol represents a short form of a/an_______. The _______ metals are placed in group II of the periodic table. The acidity or alkalinity of a solution is measured using _________. 1 dm3 of a gas is equal to ______ ml. _______ is a process used to convert vegetable oils into semisolid fat. [1] [1] [1] [1] [1] Answers the following in short: [5] State Boyle s law. How does temperature and pressure affect the solubility of gases? Mention any 2 methods by which a saturated solution can be converted into an unsaturated solution. [1] [1] [1] 1
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