Multiple choice general knowledge science & technology

What gas is evolved when dilute sulphuric acid is added to Zinc?

  1. hydrogen peroxide

  2. hydrogen

  3. argon

  4. sulpur dioxide
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B Correct answer
Explanation

When dilute sulphuric acid reacts with zinc metal, hydrogen gas is evolved. This is a classic single displacement reaction producing zinc sulfate and hydrogen gas. Hydrogen peroxide (H2O2) is not produced, argon is inert, and sulfur dioxide would require different reactants/conditions.

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