Question

Picric acid is a yellow coloured compound. Its chemical name is:
A.Trinitrobenzene
B.2,4,6-trinitrophenol
C.Trinitrotoluene
D.Trinitroaniline

Answer 1

Hint:To answer this question, you should recall the IUPAC name of picric acid as well as its chemical and physical properties. It is an aromatic compound with three nitro groups and an alcohol group.

Complete step by step answer:
Trinitrophenol, also known as picric acid, wetted, with not less than \[10\% \] water by mass is a yellow mass of moist crystals or a slurry. Picric acid is a yellow coloured compound. Its chemical name is 2,4,6 -trinitrophenol. The structure can be drawn as:
 

Hence, the correct answer to this question is option B.

Additional Information:
- Picric acid is an explosive, but wetting lowers the risk of detonation. Dangerously explosive if allowed to dry out. The pure substance is denser than water and moderately soluble in water. Used in the synthesis of dyes, as a drug, to manufacture explosives and matches, to manufacture copper and to make coloured glass.
- Store tightly sealed (to protect from drying out) in a cool, ventilated place, away from acute fire hazards and easily oxidized materials. May be irritating to skin, and mucous membranes. It may be toxic by ingestion. The dry compound is a sensitive high explosive. The mixture with water is considered safe for storage, handling and shipping. Can be detonated with a number 8 electric blasting cap.
- The primary hazard is blast where the entire load explodes instantaneously and not from flying projectiles fragments. Can explode under prolonged exposure to heat.

Note:
You should know that Picric acid is a C-nitro compound comprising phenol having three nitro substituents at the 2-, 4- and 6-positions. It has a role as an explosive, an antiseptic drug and a fixative. It derives from a 1,3,5-trinitrobenzene and a phenol. It is the conjugate acid of a picrate anion.