1. Write IUPAC names of :-
i.
Ans. 5 – Methyloctan-3-ol
ii.
Ans. 1-Chloro propan-2-ol
iii.
Ans. Pentan – 1,3,4 – triol
iv.
Ans. 2 – Methylpropan -2-ol
v.
Ans. 1,3 – Dibromo – 4- chloro – 2- butanol
vi.
Ans. 5 – Chloro – 4 – ethyl – 5- methyl hexanol.
vii.
Ans. 2 – Phenyl ethanol
viii.
Ans. 2- Methyl phenol.
ix.
Ans. 4- Bromo -3, 3,5 – trimethyl – hex -1-ene- 2,5- diol
x.
Ans. 2,3 – Dimethylbutan – 2,3 –diol
2. Write structural formula and give IUPAC names :-
i. Benzyl Alcohol
Ans. 
ii. Ethylene Glycol
Ans. 
iii. Glycerol
Ans. 
iv. m- cresol
Ans. 
v.
Ans. 
vi. Ethylphenylether
Ans. 
vii. Methylpropylether
Ans. 
viii. Anisole
Ans. 
ix. Isopropyl methylether
Ans. 
x. Phenetole
Ans. 
3. What is denatured alcohol?
Ans. Industrial alcohol (ethyl alcohol) is made unfit for drinking purpose by addition of a small quantity of poisonous substance, methanol. This is called denatured alcohol. For denaturation, copper sulphate or pyridine can also be added.
4. Mention two important uses of methanol.
Ans. Uses of methanol:-
(i) It is used for denaturing alcohol.
(ii) It is used as a solvent for paints & varnishes.
5. Arrange in the increasing order of acid strength.
Ans. The order is
.
6. Give the structure of main product of action of excess of on phenol.
Ans. The main product will be 2,4,6-tribromophenol.
7. What is wood sprit? Why is it so called?
Ans. Wood spirit is methanol. It is so called because earlier it was obtained from destructive distillation of wood only.
8. Identify allylic alcohols in the above examples.
Ans. The alcohols given in (ii) and (vi) are allylic alcohols.