Q. The emission of oxides of nitrogen in automobile exhaust will be least when the vehicle is (Solved)
1. Decelerating
2. Accelerating
3. Cruising at low speeds
4. Idling
5. Cruising at high speeds
- d. Idling
1. Decelerating
2. Accelerating
3. Cruising at low speeds
4. Idling
5. Cruising at high speeds