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Consider the following statements : (i) Coal ash contains arsenic, lead and mercury. (ii) Coal-fired power plants release sulphur dioxide and oxides of nitrogen into the environment. (iii) High ash content is observed in Indian coal. Which of the statements given above is / are correct ?
This question appeared in the OPSC Prelims 2021 examination (GS). It is Question 87 out of 179 questions in this paper.
This question was part of the OPSC Prelims 2021 (GS). The OPSC Prelims examination tests candidates on general studies, current affairs, and aptitude through multiple-choice questions.
Practice previous year questions from all OPSC Prelims papers and compare patterns with UPSC Prelims PYQ to identify overlapping topics.