JEE Chemistry 2024 Question with Solution

Given: The options are Ammonium sulphide, Lead sulphate, Lead iodide, and Ammonium arsnomolybdate.

Find: Which compound is white in color.

Examine the known colors of the given compounds:

1. Ammonium sulphide is not white.
2. Lead sulphate $\left(\text{PbSO}_4\right)$ is a white solid.
3. Lead iodide $\left(\text{PbI}_2\right)$ is bright yellow.
4. Ammonium arsinomolybdate is yellow.

From this comparison, the white compound is Lead sulphate.

Therefore, the correct option is B.

Given: A color-identification question on common compounds.

Find: The compound that is white in color.

Recall the standard laboratory colors directly:

• Lead sulphate is white.
• Lead iodide is yellow.
• Ammonium arsenomolybdate is yellow.

Hence, the only suitable choice is Lead sulphate.

Therefore, the correct option is B.