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136
Hydrogen is used for the following except
A.
manufacturing of ammonia
B.
synthesis of hydrochloric acid
C.
extinguishing fire
D.
conversion of coal to petrol
E.
manufacture of margarine
View Answer & Discuss (4)
WAEC 1991
137
Which of the following is suitable for determining different isotopes present in an element which exhibits isotopy?
A.
Sensitive weighing balance
B.
Cathoda ray tube
C.
Mass spectrometer
D.
Geiger muller counter
E.
Eudiometer
View Answer & Discuss (4)
WAEC 1991
138
When steam is passed over white-hot coke, the products are
A.
carbon (IV) oxide and nitrogen
B.
carbon (II) oxide and hydrogen
C.
carbon (ll) oxide and nitrogen
D.
carbon (lV) oxide and steam
View Answer & Discuss (7)
WAEC 1992
139
The maximum number of electrons that can accommodated in the shell having the principal quantum number 3 is
A.
3
B.
9
C.
10
D.
18
E.
32
View Answer & Discuss (7)
WAEC 1992
140
Methanol is obtained from wood by
A.
esterification
B.
bacterial decomposition
C.
combustion
D.
fractional distillation
E.
destructive distillation
View Answer & Discuss
WAEC 1992
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