2026Q1(xiv)Electrolysis

MCQEasy1 mark

Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)

Assertion (A): In the electrolysis of acidified water, the volume of hydrogen liberated is twice the volume of oxygen formed. Reason (R): Water has hydrogen and oxygen in the ratio of 1:2 by volume.

Topic: Electrolysis, electrolytes and electrode processes

Previous-year question practice database

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Pick an option and check your answer. The full worked answer is below either way.

Choose an answer

(A) is true but (R) is false.(A) is false but (R) is true.Both (A) and (R) are true and (R) is the correct explanation of (A).Both (A) and (R) are true, but (R) is not the correct explanation of (A).

Answer

Exam answer

(a) Assertion is true but Reason is false.

Explanation

Electrolysis gives H₂:O₂ = 2:1 by volume, not 1:2.

In words

Assertion is true but Reason is false.

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