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Science — CBSE Class 10 board question

Q1. [1]
Select the appropriate state symbols of the products given as X and Y in the following chemical equation by choosing the correct option from table given below : Zn₍s₎ + H₂SO₄₍l₎ ⟶ ZnSO₄₍X₎ + H₂₍Y₎
  1. (a) (X) (s), (Y) (l)
  2. (b) (X) (aq), (Y) (g)
  3. (c) (X) (aq), (Y) (s)
  4. (d) (X) (g), (Y) (aq)
Previously asked in CBSE board exam
2023 31/6/1 Q3
Generated by claude-sonnet-4-6 · 2026-06-14 10:27 · grounding rag
Model Answer

(b) X = (aq), Y = (g)

ZnSO₄ dissolves in water to form an aqueous solution, and H₂ is released as a gas.

Explanation

When zinc reacts with dilute H₂SO₄, ZnSO₄ (zinc sulphate) is soluble in water, so its state symbol is (aq). Hydrogen is produced as a gas, so its state symbol is (g). This is a standard displacement reaction from Chapter 1.

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