Question

Which one of the following is correct?
A. Reduction of any aldehyde gives secondary alcohol
B. Reaction of vegetable oil with `H_(2)SO_(4)` gives glycerine
C. Alcoholic iodine with `NaOH` gives iodoform
D. Sucrose on reaction with `NaCl` gives invert sugar

Answer 1

Correct Answer - C
Alcoholic `I_(2)` means `I_(2)` dissolved in ethanol. Ethyl alcohols gives positive iodoform test as it stisfies the structure `RCH(OH)CH_(3)`.
`CH_(3)CH_(2)OH+3I_(2)+4NaOHrarrunderset("Iodoform")(CHI_(3)+HCOONa+3NaI+3H_(2)O`
Iodoform is a pale yellow solid.