Top 150+ Solved Alkane MCQ Questions Answer
Q. Which statement is not true concerning alkanes………..
a. Large number alkanes are soluble in water
b. All alkanes have a lower density than water
c. At room temperature some alkanes are liquids, some solids and some gases
d. All alkanes burn
Q. Fischer Tropsch process is used for the manufacture of…………
a. Synthetic petrol
b. Thermosetting plastics
c. Ethanol
d. Benzene
Q. A fuel contains 25 % n-heptane and 75 % iso-octane. Its octane number is……………
a. 50
b. 75
c. 100
d. 25
Q. Sodium ethoxide is a specific reagent for……………
a. Dehydration
b. Dehydrogenation
c. Dehydrohalogenation
d. Dehalogenation
Q. What is the molecular formula of the alkane, the 5.6 litre of which weight 11 g at STP……….
a. C6 H14
b. C4H10
c. C3H8
d. C2H6
Q. The order of appearance of the following with rising temperature during the refining of crude oil is…..…......
a. Kerosene oil, gasoline, diesel
b. Diesel, gasoline, kerosene oil
c. Gasoline, diesel, kerosene oil
d. Gasoline, kerosene oil, diesel
Q. When sodium propionate is heated with soda lime, the main product is…………..
a. Ethane
b. Methane
c. Propane
d. Butane
Q. Gasoline is a mixture of alkanes with the number of carbon atoms …………….
a. C3 + C5
b. C5 + C6
c. C6 + C8
d. C7 + C9
Q. The final product of complete oxidation of hydrocarbons is ………..
a. Acid
b. Aldehyde
c. H2O + CO2
d. Dihydric alcohol
Q. Which of the following will have least hindered rotation about carbon-carbon bond…………
a. Ethane
b. Ethylene
c. Acetylene
d. Hexachloroethane
Q. How many types of carbon atoms are present in 2, 2, 3trimethylpentane………..
a. One
b. Two
c. Three
d. Four
Q. Which one gives only one monosubstitution product on chlorination………..
a. n-pentane
b. (b) Neopentane
c. (c) Isopentane
d. (d) n-butane
Q. CH4 is formed when………….
a. Sodium acetate is heated with sodalime
b. Iodomethane is reduced
c. Aluminium carbide reacts with water
d. All of these
Q. Which one of the following compounds does not give addition reactions………………
a. Aldehydes
b. Alkanes
c. Alkenes
d. Alkynes