Jamb Chemistry 2003 Past Questions and Answers

Question 36:

• JAMB 2003

The metal that liberates hydrogen from cold water in bubbles only is

A. Na
B. K
C. Ca
D. Al

Question 37:

• JAMB 2003

Chlorine gas turns a damp starch-iodide paper

A. Pink
B. Colourless
C. Red
D. Dark blue

Question 38:

• JAMB 2003

The modern process of manufacturing steel for iron is by

A. Treatment with acids
B. Oxidation
C. Blast reduction
D. Treatment with alkanal

Question 39:

• JAMB 2003

Ethene reacts with hydrogen bromide to give

A. CH₂Br₂
B. CH₃CH₂Br
C. C₂H₂Br₂
D. CHBr₂

Question 40:

• JAMB 2003

How many isomers does pentane have?

A. 6
B. 5
C. 4
D. 3