AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
(C) Hydrogen
When zinc granules are added to dilute sulphuric acid, hydrogen gas is evolved along with zinc sulphate: $\text{Zn} + \text{H}_2\text{SO}_4 \rightarrow \text{ZnSO}_4 + \text{H}_2\uparrow$
Source: Chapter 1, Section 1.1.2
The textbook explicitly gives the word equation: Zinc + Sulphuric acid → Zinc sulphate + Hydrogen. This is a displacement reaction where zinc (a metal above hydrogen in the activity series) displaces hydrogen from the acid. Examiners expect students to recall both the correct gas and ideally the balanced equation.