Which of the following are some important pollutants release

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Which of the following are some important pollutants released by the steel industry in India?

1. Oxides of sulphur

2. Oxides of nitrogen

3. Carbon monoxide

4. Carbon dioxide

Select the correct answer using codes given below.

I.A.S. (Pre) 2014

[Energy Sources & Pollution]

A

1, 3 and 4 only

B

2 and 3 only

C

1 and 4 only

D

1, 2, 3 and 4

...

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