Which of the following compounds will give a coloured crystalline compound with ?

Question

Which of the following compounds will give a coloured crystalline compound with <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/4493db9efc01c9d71335944bdb7e4d99-.png" />? (A) CH3COCl (B) CH3COOC2H5 (C) CH3COCH3 (D) CH3CONH2

Tardigrade Admin · Accepted Answer

A positive 2,4 -DNP test means that your unknown contains either an aldehyde or ketone, while a negative test tells you that it doesn't. It's actually the hydrazine group that reacts with the aldehyde or ketone, producing a positive test. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/9eb170d9f0dc68082f64ee3a7ab10a8c-.png" />

Q. Which of the following compounds will give a coloured crystalline compound with ?

$C H_{3} COCl$

$C H_{3} COO C_{2} H_{5}$

$C H_{3} COC H_{3}$

$C H_{3} CON H_{2}$

A positive $2, 4$ -DNP test means that your unknown contains either an aldehyde or ketone, while a negative test tells you that it doesn't. It's actually the hydrazine group that reacts with the aldehyde or ketone, producing a positive test.

Q. Which of the following compounds will give a coloured crystalline compound with ?

CH3​COCl

CH3​COOC2​H5​

CH3​COCH3​

CH3​CONH2​

A positive 2,4 -DNP test means that your unknown contains either an aldehyde or ketone, while a negative test tells you that it doesn't. It's actually the hydrazine group that reacts with the aldehyde or ketone, producing a positive test.

$C H_{3} COCl$

$C H_{3} COO C_{2} H_{5}$

$C H_{3} COC H_{3}$

$C H_{3} CON H_{2}$

A positive $2, 4$ -DNP test means that your unknown contains either an aldehyde or ketone, while a negative test tells you that it doesn't. It's actually the hydrazine group that reacts with the aldehyde or ketone, producing a positive test.