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GMLB/PRE BOARD EXAMINATION 2023-24 CLASS :X FULLMARKS: 80 TIME : 2 HOURS SUBJECT :CHEMISTRY You will not be allowed to write during the first 15 minutes. This time is to be spent for reading the question paper. The time given at the head of the Paper is 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) t QUESTION 1: Choose one correct answer to the questions from the given options: [15] (i) The alloy which can be used for making body of aircraft is (a) Stainless steel (b) Solder '(c) Duralumin (d) Bronze (ii) A concentrated acid was added to hydrated copper sulphate, and it \ changes its colour to white. The acid taken was (b) Nitric acid {a) Sulphuric acid (c) Ethanoic acid (d) Hydrochloric acid Page 11
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