JEE Advanced 2022 · Paper 1, Chemistry question 12

The gas. Galena ($\ce{PbS}$) is oxidised by nitric acid:
$$\ce{3PbS + 8HNO3 -> 3Pb(NO3)2 + 3S + 2NO + 4H2O}.$$
The gas is NO.

Its properties.

• It has an odd electron, so it is paramagnetic. (A) ✓
• It is diatomic, so it cannot be bent. (B) ✗
• It is a neutral oxide, not an acidic one. (C) ✗
• It is colourless. (D) ✓