The processes of calcination and roasting in metallurgical industries,

eSaral Updated on:
Question:

The processes of calcination and roasting in metallurgical industries, respectively, can lead to :

  1. Global warming and photochemical smog

  2. Global warming and acid rain

  3. Photochemical smog and ozone layer depletion

  4. Photochemical smog and global warming

Correct Option: , 2

Solution:

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