Which of the following compounds may be released by the burning of coal without emission controls?
A) carbon dioxide
B) nitrogen oxides
C) mercury
D)sulfurous oxide
E) all of these

Question

Which of the following compounds may be released by the burning of coal without emission controls?
A) carbon dioxide
B) nitrogen oxides
C) mercury 
D)sulfurous oxide
E) all of these

Quizplus · Accepted Answer

All of these compounds can be released by the burning of coal without emission controls. Carbon dioxide is a naturally occurring byproduct of burning coal, while nitrogen oxides, sulfurous oxide, and mercury are all pollutants that can be released without proper emission controls.

Which of the Following Compounds May Be Released by the Burning