Organic Compounds Containing Halogens Question 59
Question: Which compound gives yellow ppt. with iodine and alkali
[IIT-JEE 1984]
Options:
A) 2-hydroxy propane
B) Acetophenone
C) Methyl acetone
D) Acetamide
Show Answer
Answer:
Correct Answer: B
Solution:
Methyl acetate and Acetamide will not give a yellow precipitate. But 2-Hydroxypropane and Acetophenone will give a yellow precipitate.
$ \underset{Acetophenone}{\mathop{CH_3-\underset{O}{\mathop{\underset{||}{\mathop{C}}}}C_6H_5}}\underset{I_2}{\mathop{\xrightarrow{NaOH}}}\underset{\text{Yellow ppt}\text{.}}{\mathop{CHI_3}}+ C_6H_5CO_2Na$