Discussion
The most commonly used explosive in booster is :
Answer: A
The common booster explosive is pentolite.
A booster is a charge of sensitive secondary high explosive placed between the detonator and the main charge, to amplify the detonator's shock enough to set off a less sensitive main charge. Pentolite, a mixture of PETN and TNT, is widely used in cast boosters, especially for ANFO and emulsion explosives in mining.
ANFO is itself an insensitive main-charge explosive that needs a booster. Dynamite is a blasting explosive used as a main charge, and petrol is a fuel, not an explosive used in boosters.
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