Consider the following statements:1. Coal ash contains arsenic, lead a

1.	Consider the following statements:1. Coal ash contains arsenic, lead and mercury.2. Coal-fired power plants release sulphur dioxide and oxides of nitrogen into the environment.3. High ash content is observed in Indian coal.Which of the statements given above is/are correct?1. 1 only2. 2 and 3 only3. 3 only4. 1, 2 and 3
Answer» Correct Answer - Option 4 : 1, 2 and 3 The correct answer is 1, 2 and 3. Coal itself isn't a particularly toxic material. But after it's burned for domestic or commercial purposes it produces ash. Ash includes lead, mercury, cadmium, chromium, arsenic, and selenium, etc. All in levels that may threaten human health. Hence, statement 1 is correct. Thermal power plants produce large amounts of nitrogen oxides and sulfur dioxide. The pollutants that cause acid rain—when they burn fossil fuels, especially coal, to produce energy. Hence, statement 2 is correct. India's domestic coal reserves have a high ash content of up to 40 to 45 percent. Hence, statement 3 is correct.

Consider the following statements:1. Coal ash contains arsenic, lead and mercury.2. Coal-fired power plants release sulphur dioxide and oxides of nitrogen into the environment.3. High ash content is observed in Indian coal.Which of the statements given above is/are correct?1. 1 only2. 2 and 3 only3. 3 only4. 1, 2 and 3

Answer» Correct Answer - Option 4 : 1, 2 and 3

The correct answer is 1, 2 and 3.

Coal itself isn't a particularly toxic material.
But after it's burned for domestic or commercial purposes it produces ash.
Ash includes lead, mercury, cadmium, chromium, arsenic, and selenium, etc.
- All in levels that may threaten human health. Hence, statement 1 is correct.
Thermal power plants produce large amounts of nitrogen oxides and sulfur dioxide.
- The pollutants that cause acid rain—when they burn fossil fuels, especially coal, to produce energy. Hence, statement 2 is correct.
India's domestic coal reserves have a high ash content of up to 40 to 45 percent. Hence, statement 3 is correct.