Detailed explanation and options for the selected question.
Consider the following regarding copper ash from coal combustion at thermal power plants (2020): 1. Contains arsenic, lead, and mercury. 2. Releases sulphur dioxide and nitrogen oxides. 3. Indian coal has high ash content. Which are correct?
A.
(a) 1 only
B.
(b) 2 and 3 only
C.
(c) 1 and 3 only
D.
(d) 1, 2 and 3
Explanation:
Explanation: All three statements about copper ash are correct.