Chemistry 2009 Neco Past Questions and Answers

Question 36 :

• NECO 2009

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 37 :

• NECO 2009

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 38 :

• NECO 2009

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

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

Question 39 :

• NECO 2009

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

Question 40 :

• NECO 2009

Which of the following compounds will undergo thermal dissociation?

A. AgCl
B. CaCO₃
C. K₂S0₄
D. NaOH
E. NH₄CI