Alcohols Phenols And Ethers Question 22
Question: Which of the following will not form a yellow precipitate on heating with an alkaline solution of iodine
[CBSE PMT 2004]
Options:
A) $ CH_3OH $
B) $ CH_3CH_2OH $
C) $ CH_3CH(OH)CH_3 $
D) $ CH_3CH_2CH(OH)CH_3 $
Show Answer
Answer:
Correct Answer: A
Solution:
Formation of a yellow precipitate on heating a compound with an alkaline solution of iodine is known as iodoform reaction. Methyl alcohol does not respond to this test. Iodoform test is exhibited by ethyl alcohol, acetaldehyde, acetone, methyl ketone and those alcohols which possess $ CH_3CH(OH)- $ group.