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

I. Oxides of sulphur

II. Carbon dioxide

III. Carbon monoxide

IV. Oxides of nitrogen

Select the correct answer using the code given below.

[A] I, II and III only

[B] II and IV only

[C] II, III and IV only

[D] I, II, III and IV

Answer & Explanation
Option: [D]

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