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161
Which of the following compounds is not correct about the reaction of sodium material for the manufacture of plastics?
A.
Ethyne
B.
Ethane
C.
Monochloroethene
D.
Propene
E.
Butadiene
View Answer & Discuss
WAEC 1992
162
The energy required to remove the most loosely bound electron from an atom in the gaseous state is known as the
A.
bond energy
B.
ionization energy
C.
potential energy
D.
activation energy
E.
kinetic energy
View Answer & Discuss (2)
WAEC 1992
163
Vulcanization of rubber
A.
stops the growth of fungus on the rubber
B.
increases the solubility of the rubber
C.
decreases the elasticity of the rubber
D.
hardnes the rubber through cross-linkage
E.
removes sulphur from the rubber
View Answer & Discuss
WAEC 1992
164
If a reaction is said to be exothermic, which of the following statements is a correct deduction from the information?
A.
the reaction vessel gets hotter as the reaction proceeds
B.
∆H for the reaction is positive
C.
the rate of the reaction increases with time
D.
the activation energy of the reaction is high
E.
the rate of the reaction increases with time
View Answer & Discuss
WAEC 1992
165
If a reaction is said to be exothermic, which of the following statements is a correct deduction from the information?
A.
the reaction vessel gets hotter as the reaction proceeds
B.
∆H for the reaction is positive
C.
the rate of the reaction increases with time
D.
the activation energy of the reaction is high
E.
the rate of the reaction increases with time
View Answer & Discuss (1)
WAEC 1992
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