The concentrations of trace elements in fly ash are extremely variable and depend on which of the fo...........

Science Affairs Chemistry

The concentrations of trace elements in fly ash are extremely variable and depend on which of the following:

1. Composition of the original coal

2. Conditions during combustion

3. Efficiency of emission control devices

4. Storage and handling of byproducts

5. Climate

Codes:

1, 2 and 3

1, 2, 4 and 5

1, 3, 4 and 5

All of above

All the statements are correct.

Fly ash is the ash produced in small dark flecks by the burning of powdered coal or other materials and carried into the air.

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