Aliphatic hydrocarbons - Jamb Chemistry Past Questions and Answers

Question 6:

• JAMB 1978

Which of the following is not a member of the homologous series of the paraffins (alkanes)?

A. C₃H₈
B. C₅H₁₂
C. C₇H₁₆
D. C₁₅H₃₂
E. C₂₄H₄₈

Question 7:

• JAMB 1978

The most common type of chemical reaction which alkanes undergo is

A. Substitution
B. Addition
C. Condensation
D. Polymerisation
E. Double decomposition

Question 8:

• JAMB 1978

Two gas cylinders contain ethylene (ethene) and acetylene respectively. One test which can be used to distinguish between them is by

A. Passing each gas through bromine water
B. Passing each gas through dilute potassium permanganate solution
C. Passing each gas through silver nitrate solution
D. Treating each gas catalytically with excess hydrogen gas

Question 9:

• JAMB 1980

Which of the following is the correct order in the above diagram increasing boiling point, of the isomeric \(C_{5}H_{12}\) compounds?

A. A
B. B
C. C
D. D
E. E

Question 10:

• JAMB 1983

C₂H₅ - C = CH₂
CH₃
The correct name of the compound with the above structural formula is

A. 2-methylbut -1-ene
B. 2-methylbut -2-ene
C. 2-methylbutane
D. 2-ethylprop-1 -ene
E. 2-ethylprop-2-ene