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12 grade chemistry others

The reaction of aniline with chloroform under alkaline conditions lead to the formation of:A) Phenyl cyanide B) Phenyl isonitrileC) Phenyl cyanateD) Phenyl isocyanate

Aniket Singh

1 Year agoGrade

1 Answer

Askiitians Tutor Team

1 Year ago

The reaction of aniline with chloroform under alkaline conditions is called the Carbylamine reaction or isocyanide test. In this reaction, aniline (which is a primary amine) reacts with chloroform (CHCl₃) in the presence of a strong base, typically potassium hydroxide (KOH), to form phenyl isocyanide (also known as phenyl isonitrile).

The reaction mechanism involves the following steps:

The base (KOH) deprotonates chloroform to form trichloromethide anion (CCl₃⁻).
The trichloromethide anion loses a chloride ion (Cl⁻) to form dichlorocarbene (
₂).
Dichlorocarbene reacts with the aniline to give phenyl isocyanide (phenyl isonitrile).
The balanced chemical equation for the reaction is:

C₆H₅NH₂ + CHCl₃ + 3KOH → C₆H₅NC + 3KCl + 3H₂O

Correct answer: B) Phenyl isonitrile

is Pradeep Chemistry+Ncert sufficient for all of the theory of Jee Mains Chemistry?

Hi, I’m a self-study JEE 2027 aspirant with a large 11th backlog. Since I don’t think 6–8 hour one-shots are sufficient to cover the full theory + breadth of problem types of a JEE chapter, I’ve shifted from lecture-based preparation to book-based self-study.

I have a problem with using NCERT as my primary chemistry source. In my experience, it is concise and information-heavy, but often lacks detailed explanations, systematic organisation of concepts, and categorisation of problem types. This seems especially problematic for Physical and Organic Chemistry, where I feel that simply reading NCERT may not give enough depth or problem-solving preparation.

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Pradeep Chemistry → complete the chapter thoroughly from Pradeep → then read NCERT for that chapter → solve JEE Main PYQs/problems.

My main question is:

Is Pradeep + NCERT sufficient as the complete theory source for JEE Main-level Chemistry?

In other words, after thoroughly completing a chapter from Pradeep and then NCERT, can I consider the theory part of that chapter complete for JEE Main, with only PYQs/problem practice remaining?

I’m asking specifically about JEE Main level, not Advanced.

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