Question

The baker mulliken test is used for the detection of:
A.$ - COOH$ group
B.$ - N{O_2}$ group
C.$ - OH$ group
D.$ - N{H_2}$

Answer 1

Hint: We have given different functional groups and we are provided with the baker mulliken test. Now we will understand which group it is used to identify and that we will see the reactions and we will choose the correct answer.

Complete Step by step answer:Step1. We are provided with a baker mulliken test in the question. Baker mulliken test used to detect the nitro group.
Step2. The nitro group is one of the most general functional groups that makes a compound explosive. Its chemical composition is $N{O_2}$ . The nitro group strongly withdraws the electrons at where it is attached. Due to it, the bind attached to the nitro group can become acidic.
Step3. IN this test we will look into the reduction of nitrobenzene with the zinc when the ammonium chloride is present. This reaction gives us the N Phenyl hydroxylamine. The chemical balanced reaction is given below.

$PhN{O_2} + 4H\xrightarrow{{Zn,N{H_4}Cl}}PhNHOH + {H_2}O$

$PhNHOH$ is the N Phenyl hydroxylamine.
Step4. When the N Phenyl hydroxylamine is heated in presence of the Tollen’s reagent the metallic silver is formed with water and ammonia.
The reaction is given below.
$PhNHOH + 2[Ag{(N{H_3})_2}OH \to PhNO + 2{H_2}O + 4N{H_3} + 2Ag$
Step5. Hence we have seen that using the Baker Mulliken test we have identified the nitro group.

Hence the option B is the correct answer.

Note: Carboxylic acid functional group is an organic group with carbon atom that is double bonded with the oxygen atom and single bonded with the hydroxyl group. Its Chemical composition is $ - HCOOH$ . According to the IUPAC the numbering of chains always starts from the Carboxylic acid. The ‘oic acid’ is added as a suffix while nomenclature.