Which one of the following is not an explosive matter?

Detailed Solution:

The correct answer is “Nitrochloroform”.

Nitrochloroform is not an explosive matter.  While it is a highly toxic and dangerous chemical, it does not possess the necessary properties to undergo an explosive reaction.

The other options listed - Trinitrotoluene (TNT), Dinitro glycerine, and Cyclo Trimethylene trinitrarmine (RDX) - are all well-known explosives.   Sources and related content