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Consider the following statements about coal ash: 1. It contains arsenic, lead, and mercury. 2. Coal-fired plants release SO2 and NOx. 3. Indian coal has high ash content. Which are correct?

1. Consider the following statements about coal ash: 1. It contains arsenic, lead, and mercury. 2. Coal-fired plants release SO2 and NOx. 3. Indian coal has high ash content. Which are correct?

 

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