Jamb Chemistry 1995 Past Questions and Answers

Question 31:

• JAMB 1995

In the extraction of iron in the blast furnace, limestone is used to?

A. Release CO₂ for the reaction
B. Reduce the iron ore
C. Increase the strenght of the iron
D. Remove impurities

Question 32:

• JAMB 1995

Which of the following compounds will impart a brick-red colour to a non-luminious bunsen flame?

A. NaCl
B. LiCl
C. CaCl₂
D. MgCl₂

Question 33:

• JAMB 1995

Group 1 A metals are not found free in nature because they?

A. Are of low melting and boiling points
B. Have weak metallic bonding
C. Conduct electricity and heat
D. Are very reactive

Question 34:

• JAMB 1995

CHCl₃ + Cl₂ → HCl + CCl₄. The reaction above is an example of?

A. An addition reaction
B. A substitution reaction
C. A chlorination reaction
D. A condensation reaction

Question 35:

• JAMB 1995

Which of the following pairs has compounds that are isomers?

A. Propanal and propanone
B. Ethanoic acid and ethylmethanoate
C. Ethanoic acid and ethane-1, 2-diol
D. 2-methylbutane and 2, 2-dimethylbutane