Following compounds are given (i) CH_ 3 CH_ 2 OH (ii) CH_ 3 COCH_ 3 (iii) (iv) CH_ 3 OH Which of the above compound(s) on being warmed with iodine solution and NaOH , will give iodoform?

Correct answer: C. (i), (ii) and (iii) Compounds having either group or CH_ 3 CHOH- group, give iodoform when warmed with I_ 2 and NaOH . Thus, compounds give iodoform when heated with I_ 2 and NaOH . (Note: NaOI oxidises CH_ 3 CH_ 2 OH to CH_ 3 CHO , and gives positive iodoform test.)

NEET

Exam: NEET
Subject: Chemistry
Chapter: Aldehydes and Ketones

NEET · Chemistry · Aldehydes and Ketones

Following compounds are given (i) CH_ 3 CH_ 2 OH (ii) CH_ 3 COCH_ 3...

Following compounds are given (i)

\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}

(ii)

\mathrm{CH}_{3} \mathrm{COCH}_{3}

(iii)

Following compounds are given (i) CH_ 3 CH_ 2 OH (ii) CH_ 3 COCH_ 3 (iii) (iv) CH_ 3 OH Which of the above compound(s)

(iv)

\mathrm{CH}_{3} \mathrm{OH}

Which of the above compound(s) on being warmed with iodine solution and

\mathrm{NaOH}

, will give iodoform?

Options

A(i), (iii) and (iv)
BOnly(ii)
C(i), (ii) and (iii)
D(i) and (ii)

Correct answer

C. (i), (ii) and (iii)

Step-by-step solution

Compounds having either Following compounds are given (i) CH_ 3 CH_ 2 OH (ii) CH_ 3 COCH_ 3 (iii) (iv) CH_ 3 OH Which of the above compound(s)

group or

\mathrm{CH}_{3} \mathrm{CHOH}-

group, give iodoform when warmed with

\mathrm{I}_{2}

and

\mathrm{NaOH}

. Thus, compounds Following compounds are given (i) CH_ 3 CH_ 2 OH (ii) CH_ 3 COCH_ 3 (iii) (iv) CH_ 3 OH Which of the above compound(s)

give iodoform when heated with

\mathrm{I}_{2}

and

\mathrm{NaOH}

. (Note:

\mathrm{NaOI}

oxidises

\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}

\mathrm{CH}_{3} \mathrm{CHO}

, and gives positive iodoform test.)

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