Civil Services TSPSC Group 1 Mock Test 2022-23 General Knowledge Ecology and Environment Environmental pollution
A 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
1, 2, and 3 Only
2
1, 3 and 4 Only
3
2, 3 and 4 Only
4
3 and 4 Only