The black residue left behind after an explosive blast is caused by which compound?

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Multiple Choice

The black residue left behind after an explosive blast is caused by which compound?

Explanation:
Black residue is essentially carbon-rich soot formed when the explosive’s carbon-containing fuel doesn’t fully burn during detonation. TNT’s aromatic benzene-based structure with multiple nitro groups tends to produce a lot of solid carbon soot, which shows up as a conspicuous black residue around the blast site. This soot is a common forensic clue pointing to TNT. Other explosives listed don’t generate the same prominent carbon soot under detonation, so they don’t leave the same black residue as TNT.

Black residue is essentially carbon-rich soot formed when the explosive’s carbon-containing fuel doesn’t fully burn during detonation. TNT’s aromatic benzene-based structure with multiple nitro groups tends to produce a lot of solid carbon soot, which shows up as a conspicuous black residue around the blast site. This soot is a common forensic clue pointing to TNT. Other explosives listed don’t generate the same prominent carbon soot under detonation, so they don’t leave the same black residue as TNT.

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