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Neco Chemistry Past Questions and Answers

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Neco Chemistry Past Questions

Question 156:


Which of the following is NOT a fraction of petroleum?

A. Bitumen
B. Coal
C. Diesel
D. Kerosene
E. Petrol


Question 157:


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

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


Question 158:


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

A. CH2
B. CH3
C. C2H2
D. C2H4
E. C2H6


Question 159:


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

A. Dehydration
B. Esterification
C. Halogenation
D. Hydrogenation
E. Saponification


Question 160:


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

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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