An aliphatic organic compound(X) containing C, H and N on hydrolysis with dilute HCl to produce formic acid. 'X" is reduced to dimethylamine in presence of Pt (or) Ni. The compound(X) could be

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${CH}_{3} NC$

${CH}_{3} CN$

${CH}_{3} {NH}_{2}$

A mixture of ${CH}_{3} CN and {CH}_{3} NC$

answer is A.

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Detailed Solution

Explanation:

Hydrolysis with dilute HCl producing formic acid (HCOOH):
Upon hydrolysis, methyl cyanide (CH₃CN) reacts with water and HCl to form formic acid (HCOOH) as a byproduct:
CH₃CN + H₂O + HCl → HCOOH
Reduction to dimethylamine ((CH₃)₂NH):
When CH₃CN is reduced in the presence of Pt or Ni, the nitrile group is hydrogenated, forming dimethylamine:
CH₃CN + H₂ → (CH₃)₂NH
Analyzing other options:
- CH₃NC (Methyl isocyanide): Hydrolysis of CH₃NC produces methylamine and formic acid but does not reduce to dimethylamine.
- CH₃NH₂ (Methylamine): This does not undergo hydrolysis to produce formic acid.
- A mixture of CH₃CN and CH₃NC: This would produce a mix of products, which is not supported by the question.