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Why hydrogen is not evolved with nitric acid

The same question, asked 3 times: 2024*, 2025*, 2026. Every wording below, oldest first.

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  1. Question 1

    2024

    Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
    17
    Assertion (A) : Hydrogen gas is not evolved when zinc reacts with nitric acid. Reason (R) : Nitric acid oxidises the hydrogen gas produced to water and itself gets reduced.

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  2. Question 2

    2025

    Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
    17
    Assertion (A) : Hydrogen gas is not evolved when a metal reacts with nitric acid. Reason (R) : Nitric acid is a strong reducing agent and reduces the hydrogen produced in the reaction to water.

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  3. Question 3

    2026

    23
    Which gas is evolved when magnesium metal reacts with very dilute HNO3\mathrm{HNO_3} ?

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