UPSC Prelims · 2011 · GS Paper I · Q17
Consider the following : 1. Carbon dioxide. 2. Oxides of nitrogen. 3. Oxides of Sulphur Which of the above is/are the emission/emissions from coal combustion at thermal power plants
- (A)1 only.
- (B)2 and 3 only.
- (C)1 and 3 only.
- (D)1,2,and 3
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- Subject
- History