Given below are two statements : Statement I : Piciric acid is 2,4,6 - trinitrotoluene. Statement II : Phenol - 2,4 - disulphonic acid is treated with Conc. HNO_3 to get picric acid. In the light of the above statements, choose the most appropriate answer from the options given below :

Statement I is incorrect but Statement II is correct

Both Statement I and Statement II are incorrect

Both Statement I and Statement II are correct

Statement I is correct but Statement II is incorrect

Compounds Containing Nitrogen PYQ — JEE Main 2024 · 6 Apr · Shift 1 · Q20 with Solution

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Correct answer: A

Identify picric acid correctly

Picric acid is 2,4,6-trinitrophenol, not 2,4,6-trinitrotoluene.
- Picric acid: $\mathrm{C_6H_2(NO_2)_3OH}$ IUPAC name: 2,4,6-trinitrophenol
- $2,4,6$ -trinitrotoluene is TNT, not picric acid.
Therefore, Statement I is incorrect.
Check Statement II

Phenol- $2,4$ -disulphonic acid on treatment with concentrated nitric acid gives picric acid.

Reason:
- The $-SO_3H$ groups are replaced during nitration under strong conditions.
- Ultimately, nitro groups enter the $2,4,6$ positions of phenol to form picric acid.
The overall product is: $\mathrm{Phenol\text{-}2,4\text{-}disulphonic\ acid \xrightarrow[ ]{Conc.\ HNO_3} 2,4,6\text{-}trinitrophenol}$

So, Statement II is correct.
Evaluate the options
- A: Statement I is incorrect but Statement II is correct ✅
- B: Both incorrect ❌
- C: Both correct ❌
- D: Statement I correct but Statement II incorrect ❌
Final answer

The correct option is: $\boxed{A}$

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Correct answer: A

Identify picric acid correctly

Picric acid is 2,4,6-trinitrophenol, not 2,4,6-trinitrotoluene.
- Picric acid: $\mathrm{C_6H_2(NO_2)_3OH}$ IUPAC name: 2,4,6-trinitrophenol
- $2,4,6$ -trinitrotoluene is TNT, not picric acid.
Therefore, Statement I is incorrect.
Check Statement II

Phenol- $2,4$ -disulphonic acid on treatment with concentrated nitric acid gives picric acid.

Reason:
- The $-SO_3H$ groups are replaced during nitration under strong conditions.
- Ultimately, nitro groups enter the $2,4,6$ positions of phenol to form picric acid.
The overall product is: $\mathrm{Phenol\text{-}2,4\text{-}disulphonic\ acid \xrightarrow[ ]{Conc.\ HNO_3} 2,4,6\text{-}trinitrophenol}$

So, Statement II is correct.
Evaluate the options
- A: Statement I is incorrect but Statement II is correct ✅
- B: Both incorrect ❌
- C: Both correct ❌
- D: Statement I correct but Statement II incorrect ❌
Final answer

The correct option is: $\boxed{A}$