Chemistry 2008 Jamb Past Questions and Answers

Question 41 :

• JAMB 2008

A hydrocarbon X with a molar mass of 26 consists of 92.3% carbon. What is its molecular formular

A. C₂H₂
B. C₃H₃
C. C₄H₄
D. C₅H₅

Question 42 :

• JAMB 2008

A red precipitate of copper (I) carbide is formed when ammonium solution of copper (I) chloride is introduced into

A. CH₂ = CH - CH₂ - CH₃
B. CH₃ CH₂ - C ≡ CH
C. CH₃ CH₂ CH₂ CH₃
D. CH₃ - C C - CH₃

Question 43 :

• JAMB 2008

Reduction of nitroalkanes, nitrites and amides is a route for the preparation of

A. Amines
B. Alkenes
C. Polymers
D. Detergents

Question 44 :

• JAMB 2008

Reduction of alkanonoes with LialH₄ produces

A. Primary alkanols
B. Secondary alkanols
C. Tertiary alkanols
D. Polyhydric alkanols

Question 45 :

• JAMB 2008

The product obtained when a mixture of benzene vapour and hydrogen are passed over nickel catalyst at 180^oC is

A. Cyclohexane
B. Cyclopentane
C. N- hexane
D. N - pentane