20
MCQ (Multiple Correct Answer)
Phenol can be distinguished from ethanol by the reactions with ............ .
A
$\mathrm{Br}_2 /$ water
B
Na
C
neutral $\mathrm{FeCl}_3$
D
All of these
21
MCQ (Multiple Correct Answer)
Which of the following are benzylic alcohols?
A
$\mathrm{C}_6 \mathrm{H}_5-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{OH}$
B
$\mathrm{C}_6 \mathrm{H}_5-\mathrm{CH}_2 \mathrm{OH}$
C
D
22
Subjective
What is the structure and IUPAC name of glycerol?
Explanation
Glycerol is the trihydric alcohol. Structure of glycerol is
So, IUPAC name is $-$ propoan- 1, 2, 3-triol.
23
Subjective
Write the IUPAC name of the following compounds.
Explanation
The correct IUPAC name of the following compounds are given below
(a) 
IUPAC name $\to$ 3-ethyl-5-methylhexan-2, 4-diol.
IUPAC name $\rightarrow$ 1-methoxy-3-nitrocyclohexane.
24
Subjective
Write the IUPAC name of the compound given below.
Explanation
The IUPAC name of the compound given below is
3-methylpent-2-ene-1, 2-diol.