Chemistry Past Questions, Answers & Explanations For JAMB, WAEC, NECO & Post UTME - Chemistry

Chemistry Questions

Question 1:

JAMB 2019

Which of the following statements is NOT correct?

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A The average kinetic energy of a gas is directly proportional to its temperature
B At constant temperature, the volume of a gas increases as the pressure increases
C The pressure of a gas is inversely proportional to its volume
D The temperature of a gas is directly proportional to its volume
E The collisions of molecules with each other are inelastic

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Question 2:

JAMB 2019

Zinc Oxide is a

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A Basic Oxide
B Acidic Oxide
C Amphoteric Oxide
D Neutral Oxide
E Reactive Oxide

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Question 3:

JAMB 2019

When sodium chloride and metallic sodium are each dissolved in water

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A Both processes are exothermic
B Both processes are endothermic
C The dissolution of metallic sodium is endothermic
D The dissolution of metallic sodium is exothermic
E The dissolution of sodium chloride is explosive

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Question 4:

JAMB 2019

The periodic classification of elements is an arrangement of the elements in order of their

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A Atomic Weights
B Isotopic Weights
C Molecular Weights
D Atomic Numbers
E Atomic Masses

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Question 5:

JAMB 2019

In the reaction between sodium hydroxide and sulphuric acid solutions, what volume of 0.5 molar sodium hydroxide would exactly neutralise 10cm3 of 1.25 molar sulphuric acid?

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A 5cm3
B 10cm3
C 20cm3
D 25cm3
E 50cm3

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