Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of

Transportation of 35% oleum during winter suffers from the problem of

1.	Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of
A.	nitric acid
B.	hydrochloric acid
C.	methyl alcohol
D.	formic acid
Answer» B. hydrochloric acid