Quiz for Alkanes

Q1: What is the general formula of alkanes?

A. CnH2n B. CnH2n+2 C. CnH2n-2 D. CnHn

Q2: Which of the following is a straight chain alkane?

A. Isobutane B. Neopentane C. Butane D. Cyclopentane

Q3: What is the IUPAC name of CH3CH2CH2CH3?

A. Butane B. Pentane C. Propane D. Hexane

Q4: Which of the following alkanes has the highest boiling point?

A. Methane B. Ethane C. Butane D. Pentane

Q5: Alkanes undergo which type of reaction?

A. Addition B. Substitution C. Elimination D. Rearrangement

Q6: Which gas is called marsh gas?

A. Methane B. Ethane C. Propane D. Butane

Q7: Which alkane has the molecular formula C5H12?

A. Pentane B. Hexane C. Butane D. Heptane

Q8: Isomers are possible from which alkane onwards?

A. Ethane B. Propane C. Butane D. Methane

Q9: Which compound is a branched-chain isomer of pentane?

A. Isopentane B. Butane C. Hexane D. Cyclopentane

Q10: How many isomers does C5H12 have?

A. 2 B. 3 C. 4 D. 5

Q11: Which of the following is not an alkane?

A. CH4 B. C2H6 C. C3H8 D. C2H4

Q12: Which of the following has tetrahedral geometry?

A. Ethene B. Methane C. Benzene D. Acetylene

Q13: Complete combustion of alkanes gives?

A. CO + H2O B. C + H2 C. CO2 + H2O D. CH4

Q14: Which alkane is liquid at room temperature?

A. Methane B. Butane C. Pentane D. Propane

Q15: Which alkane has only one isomer?

A. C2H6 B. C4H10 C. C5H12 D. C6H14

Q16: Which of the following has maximum number of primary hydrogens?

A. Methane B. Ethane C. Propane D. Butane

Q17: What is the hybridization of carbon in alkanes?

A. sp B. sp2 C. sp3 D. sp3d

Q18: How many sigma bonds are present in ethane?

A. 5 B. 6 C. 7 D. 8

Q19: Which statement is true for alkanes?

A. Polar and reactive B. Non-polar and reactive C. Non-polar and unreactive D. Polar and unreactive

Q20: Which of these is used as LPG?

A. Methane B. Butane C. Ethene D. Benzene