Question

On destructive distillation, 1000 kg of coal gives P kg of coke, Q litres of ammonia, R litres of coal tar and S $m^3$ of coal gas. The value of P, Q, R and S respectively are:

• A. 700, 200, 100, 400
• B. 400, 100, 50, 200
• C. 700, 100, 50, 400
• D. 700, 400, 100, 50

Answer 1

The correct option is C

700, 100, 50, 400

When coal is subjected to destructive distillation it gives coal gas, liquor ammonia, coal tar and coke. 1000 kg of coal gives 700 kg of coke, 400 litres of ammonia, 100 litres of coal tar and 50 $m^3$ of coal gas. Hence, the values of P, Q, R and S respectively are 700, 400, 100, 50.