JEE Mains Chemistry Past PapershardMCQ SINGLE

Given below are two statements: Statement-I: The gas liberated on warming a salt with dil H2SO4, turJEE Mains Chemistry Past Papers Chemistry Question

Question

Given below are two statements: Statement-I: The gas liberated on warming a salt with dil H2SO4, turns a piece of paper dipped in lead acetate into black, it is a confirmatory test for sulphide ion. Statement-II: In statement-I the colour of paper turns black because of formation of lead sulphite. In the light of the above statements, choose the most appropriate answer from the options given below: (A) Both Statement-I and Statement-II are false (B) Statement-I is false but Statement-II is true (C) Statement-I is true but Statement-II is false (D) Both Statement-I and Statement-II are true.

Answer: C

💡 Solution & Explanation

Na2S + H2SO4  Na2SO4 + H2S (CH3COO)2Pb + H2S  PbS + 2CH3COOH Black lead sulphide

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