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Chemistry Past Questions and Answers

Neco Chemistry Questions

Question 156:

Which of the following is NOT a fraction of petroleum?

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A Bitumen
B Coal
C Diesel
D Kerosene
E Petrol

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Question 157:

Which of the following statements is NOT correct of group VII elements? They

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A Are diatomic
B Are good oxidizing agents
C Are highly electronegative
D Have high electron affinity
E Have relatively low ionization potentials

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Question 158:

The empirical formula of a hydrocarbon containing 0.12 mole of carbon 0.3 mole of hydrogen is ____________

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A CH₂
B CH₃
C C₂H₂
D C₂H₄
E C₂H₆

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Question 159:

The reaction of an alkanol with alkanioc acid is known as ____________

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A Dehydration
B Esterification
C Halogenation
D Hydrogenation
E Saponification

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Question 160:

The rate of a reaction usually increases with increase in the concentration of reactants because the ____________

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A Distance between particles of the reactants increases
B Frequency of collision of particles is lower
C Particles of the reactants gain energy and move faster
D Reactants from a complex which decomposes rapidly
E Reactants occupy a higher energy level

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