Top 150+ Solved Alkane MCQ Questions Answer
Q. The decreasing order of boiling points is ……….
a. n-Pentane > iso-Pentane > neo-Pentane
b. iso-Pentane > n-Pentane > neo-Pentane
c. neo-Pentane > iso-Pentane > n-Pentane
d. n-Pentane > neo-Pentane > iso-Pentane
Q. To prepare a pure sample of n-hexane using sodium metal as one reactant, the other reactant will be………
a. n-propyl bromide
b. Ethyl bromide and n-butyl bromide
c. Ethyl chloride and n-butyl chloride
d. Methyl bromide and n -pentyl chloride
Q. Sodium acetate can be converted to ethane by……….
a. Heating with LiAlH4
b. Electrolysing its aqueous solution
c. Heating with sodalime
d. Heating with calcium acetate
Q. Which of the following compounds is used in antiknock compositions to prevent the deposition ofoxides of lead on spark plug, combustion chamber and exhaust pipe…….
a. Glycerol
b. Glycol
c. 1, 2-dibromoethane
d. Benzene
Q. In the reaction CH3- Br+ 2Na+ Br-CH3 , the product called ……..
a. Wurtz reaction
b. Aldol condensation
c. Perkin’s reaction
d. Levit reaction
Q. Iodoethane reacts with sodium in the presence of dry ether. The product is……..
a. Pentane
b. Propane
c. Butene
d. Butane
Q. The most volatile compound is……….
a. 2, 2-dimethyl propane
b. 2-methyl butane
c. Isobutane
d. n-pentane
Q. In Wurtz reaction, the reagent used is………..
a. Na
b. liquid NH3Na
c. ether dry Na
d. alcohol dry Na
Q. Which of the following has highest octane number…………
a. n-hexane
b. n-heptane
c. n-pentane
d. 2, 2, 4-trimethyl pentane
Q. The petrol having octane number 80 has…………
a. 20% normal heptane + 80% iso-octane
b. 80% normal heptane + 20% iso-octane
c. 20% normal heptane + 80% normal octane
d. 80% normal heptane + 20% normal octane