organic chemistry - Category wise Question and Answer Practice Test with Solutions

Question : 6

The order of appearance of the following with increasing temperature during the refining of crude oil is _____________ .

a) Gasoline, kerosene, diesel

b) Kerosene, gasoline, diesel

c) Diesel, gasoline, kerosene

d) Gasoline, diesel, kerosene

Question : 7 [IAS Prelim]

The characteristic odour of garlic is due to

a) a sulphur compound

b) a fluorine compound

c) a chloro compound

d) acetic acid

Question : 8 [IAS Prelim]

Assertion (A) :
The main constituent of the liquefied petroleum gas is methane.
Reason (R) :
Methane can be used directly for burning in homes and factories where it can be supplied through pipelines.

a) Both A and R are true but R is not the correct explanation of A

b) A is true but R is false

c) Both A and R are true and R is the correct explanation of A

d) A is false but R is true

Question : 9

Which is a general formula of alkenes?

a) C_nH_2n–2

b) C_nH_2n

c) C_nH_2n+2

d) None of these

Question : 10

Two adjacent members of a homologous series have :

a) same general methods of preparation

b) a difference of 14 a.m.u. in molecular mass

c) a difference of –CH₂ in their structure

d) all of the above