General Science Chemistry MCQs

Q.  What is the main constituent of coal gas?

a. Oxygen
b. Water
c. Nitrogen
d. Methane


ANSWER: See Answer
 
By the destructive distillation of coal, we can obtain coal gas, coal tar and ammonia. Coke is left as a residue. Coal gas contains methane, carbon monoxide and hydrogen. Since all the three are combustible, coal gas is a good fuel with a high calorific value.
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