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ICSE Class X Prelims 2023 : Chemistry (Delhi Public School (DPS), Newtown, Kolkata)

6 pages, 92 questions, 1 questions with responses, 1 total responses,    0    0
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DELHI PUBLIC SCHOOL NEWTOWN SESSION: 2022-23 PRE-BOARD EXAMINATION CLASS: X FULL MARKS: 80 sUBJECT: CHEMISTRY (SET A] General Instructions: TIME: 2 HOURS The paper consists of six printed pages. Section A is compulsory. Attempt any four questions from Section B. Answers should be to the point. Question numbers shoeld be copied carefully while answering the questions. SECTION A (Attempt all questions from this section) Question 1 Choose one correct answer to the questions from the given options: ) A weak electrolyte is: A. Acetic acid B. Carbon tetrachloride Molten sodium chloride C. ) D. Sugar syrup Ionisation potential is maximum for the element is: A. Noble gases B. C. Alkaline earth metals . (ii) iv) Alkali metal The main component of brass is: A. Nickel B. Copper C. Chromium . Aluminium The A (v) Halogens polar covalent compound Methane B. Water C. D. Nitrogen Chlorine An acid which has A. B. C. is: one replaceable hydrogen ions: Formic acid Sulphuric acid Phosphoric acid - D. Phosphorus acid (vi) The metal whose hydroxide is soluble in excess of sodium hydroxide is: A. Lead B. C. Magnesium Copper D. Calcium A/1 15

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