Which one of the following is used as an explosive?

Which one of the following is not an explosive :

'Nobel oil' is the name of which one of the following explosives?

To avoid ‘knocking’ of the engine of a car, which one of the following is used as an anti-knocking agent?

Cetane number is used as a quality parameter mainly for which of the following?

Which one of the following has the highest fuel value?