Organic Compounds - Jamb Chemistry Past Questions and Answers

Question 16:

• 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 17:

• JAMB 1979

An organic compound X has the following properties: I. It is not miscible with water. ll. lt has boiling point of 77^oC lll. lt has a sweet odour lV. lt is insoluble in sodium hydrogen carbonate solution . V lt does not decolourize bromine water X is therefore

A. Methane
B. Ethanoic acid
C. Ethene
D. Ethyl ethanoate
E. Carbon tetrachloride

Question 18:

• JAMB 1979

An organic compound X has the following properties: I. It is not miscible with water. ll. lt has boiling point of 77^oC lll. lt has a sweet odour lV. lt is insoluble in sodium hydrogen carbonate solution . V lt does not decolourize bromine water X is therefore

A. Methane
B. Ethanoic acid
C. Ethene
D. Ethyl ethanoate
E. Carbon tetrachloride

Question 19:

• JAMB 1979

Which are the correct IUPAC names for H-CO\(_2\)CH\(_3\) and CH \(\equiv\) CH

A. Methyl methanoate and ethene
B. Metanoic acid and ethyne
C. Ethyl methanoate and ethyne
D. Methyl methanoate and ethyne
E. Ethanoic acid and ethene

Question 20:

• JAMB 1979

Which of the following substances are all made by the process of polymerization?

A. Nylon and soap
B. Ethanoic acid margarine and ethanol
C. Nylon and artificial rubber
D. Soap and butane
E. Margarine and nylon