Jamb Chemistry 1991 Past Questions and Answers

Question 41:

• JAMB 1991

Ethene when passed into concentrated H₂SO₄ is rapidly absorbed. The product is diluted with water and then warmed to produce?

A. Ethanol
B. Diethyl ether
C. Ethanal
D. Diethyl sulphate

Question 42:

• JAMB 1991

One advantages of detergents over soap is that detergents?

A. Are easier to maufacture
B. Foam more than soap
C. Form soluble salts with hard water
D. Are able to deter germs more than soap

Question 43:

• JAMB 1991

A certain liquid has a high boiling point. It is viscous, non-toxic, miscible with water being very hygroscopic. This liquid is most likely to be?

A. CH₃CH₂CH₂HO
B. CH₃CHOHCH₃
C. CH₃CH₂CHOHCH₃
D. CH₂OHCHOHCH₂OH

Question 44:

• JAMB 1991

CH₃-CH-CH₃
CH₂CI
Is known as?

A. 1-chloro-2-methylbutane
B. 1-chloro-2-methylpropane
C. 2-chloromethylpropane
D. 1-chloro-2, 2-dimethylethane

Question 45:

• JAMB 1991

Which of the following statements is TRUE of the complete hydrolysis of a glycerine by sodium hygroxide?

A. 3 moles ofNaOH are required for each mole of glyceride
B. 3 moles of glycerol are produced
C. Only one mole of soap is formed
D. Concentrated H₂SO₄ is essential for the completion of the reaction