Top 150+ Solved Alkane MCQ Questions Answer
Q. Propane is obtained from propene, by which of the following methods……….
a. Wurtz reaction
b. Dehydrogenation
c. Frankland reaction
d. Catalytic hydrogenation
Q. Carbon black, which is used in making printer's ink, is obtained by decomposition of………….
a. Acetylene
b. Benzene
c. Carbon tetrachloride
d. Methane
Q. The addition of tetraethyl lead to petrol…………
a. Lowers its octane number
b. Raises its octane number
c. May raise or lower the octane number
d. Has no effect on octane number
Q. Which of the following compound has maximum boiling point……..
a. n-hexane
b. n-pentane
c. 2, 2-dimethyl propane
d. 2-methyl butane
Q. Knocking sound occurs in engine when fuel……….
a. Ignites slowly
b. Ignites rapidly
c. Contains water
d. Is mixed with machine oil
Q. Petroleum is mainly a mixture of………..
a. Alkanes
b. Cyclohexane
c. Benzenoid hydrocarbons
d. Alkenes
Q. Which of the following has maximum boiling point……………
a. iso-octane
b. n-octane
c. 2, 2, 3, 3-tetramethyl butane
d. n-butane
Q. Aqueous solution of the following compound on electrolysis gives ethane……….
a. Acetic acid
b. Acetamide
c. Potassium acetate
d. Ethyl acetate
Q. Which of the following does not decolourise bromine solution in carbon disulphide………..
a. Acetylene
b. Propene
c. Ethane
d. Propyne
Q. Anhydrous sodium acetate on heating with sodalime gives………….
a. Acetic acid
b. Methane
c. Calcium acetate
d. Ethane
Q. A sample of gasoline contains 81% iso-octane and 19% nheptane. Its octane number will be……..
a. 19
b. 81
c. 100
d. 62
Q. The natural petroleum contains………….
a. Saturated hydrocarbons
b. Cyclic saturated hydrocarbons
c. Compounds of sulphur
d. All of these