A. manufacturing of ammonia
B. synthesis of hydrochloric acid
C. extinguishing fire
D. conversion of coal to petrol
E. manufacture of margarine
Correct Answer:
Option C – extinguishing fire
A. manufacturing of ammonia
B. synthesis of hydrochloric acid
C. extinguishing fire
D. conversion of coal to petrol
E. manufacture of margarine
Correct Answer:
Option C – extinguishing fire
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