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ICSE Class X Prelims 2021 : Chemistry (Lokhandwala Foundation School (LFS), Kandivali East, Mumbai)

6 pages, 85 questions, 85 questions with responses, 109 total responses,    3    0
Kiah Jaiswal
Lokhandwala Foundation School (LFS), Kandivali East, Mumbai
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LOKHANDWALA FOUNDATION SCHOOL PRELIMINARY EXAMINATION-2020-21 SUBJECT-CHEMISTRY Date: 29/01/21 Grade: 10 Duration: 2 Hrs. Max. Marks: 80 _____________________________________________________________________________________ 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 given time at the head of this paper is the time allowed for writing the answers. Section I is compulsory. Attempt any four questions from Section II. The intended marks for questions or parts of questions are given in brackets [ ]. The paper consists of 6 sides. _______________________________________________________________________________________ SECTION I (40 marks) (Attempt all questions from this section) Q1. a) Choose the correct answer from the options given below: [5] i. The element having highest electron affinity from the following elements is A. Bromine B. Chlorine C. Fluorine D. Iodine ii. From the given list, identify the covalently bonded compound. A. Magnesium chloride B. Sodium chloride C. Carbon tetrachloride D. Lead chloride iii. In the electrolysis of acidified water, sulphuric acid acts as a A. Catalyst B. Non- volatile acid C. Dehydrating agent D. An Oxidising agent iv. In the organic compound ethene, contain Carbon atoms joined byA. Single covalent bond B. Double covalent bond C. Triple covalent bond D. None of the above v. The basic gas ammonia shows colour change from orange to yellow, the indicator used is A. Alkaline phenolphthalein B. Phenolphthalein C. Litmus solution D. Methyl orange

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