Question

Assertion (A): If barium nitrate solution is added to sodium sulphate solution, a white precipitate is formed.

Reason (R): Sodium sulphate solution is white in colour.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Options

• (1)

• (2)

• (3)

• (4)

Answer 1

(3)

Explanation:

When barium nitrate solution is added to sodium sulphate solution, a white precipitate of barium sulphate (BaSO₄) is formed. Therefore, the Assertion (A) is true.

Sodium sulphate solution is colourless, not white in colour. Therefore, the Reason (R) is false.

\[\ce{Ba(NO3)2 + Na2SO4 −>BaSO4 + 2NaNO3}\]

Hence, A is true but R is false.