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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 36:

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

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A Na
B K
C Ca
D Al

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Question 37:

Chlorine gas turns a damp starch-iodide paper

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A Pink
B Colourless
C Red
D Dark blue

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Question 38:

The modern process of manufacturing steel for iron is by

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

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Question 39:

Ethene reacts with hydrogen bromide to give

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A CH₂Br₂
B CH₃CH₂Br
C C₂H₂Br₂
D CHBr₂

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Question 40:

How many isomers does pentane have?

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A 6
B 5
C 4
D 3

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