62. Three-way catalytic converter is used in vehicles to reduce
1. Unburnt Hydrocarbon
2. Carbon Monoxide
3. Nitric Oxide
4. Sulphur dioxide

Select the correct answer using the code given below :

1. Only 1, 2, and 3

2. Only 1, 3 and 4

3. Only 2, 3 and 4

4. Only 3 and 4

Correct Answer :

Only 1, 2, and 3