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Introduction to the tetravalency of carbon
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1416
From the reactions : ZnO + Na
2
O \(\to\) NaZnO and ZnO + CO
2
\(\to\) ZnCO
3
it may be concluded that zinc oxide is
A.
neutral
B.
basic
C.
acidic
D.
amphoteric
E.
a mixture
View Answer & Discuss (2)
JAMB 1984
1417
An example of a neutral oxide is
A.
AL
2
O
3
B.
NO
2
C.
CO
2
D.
CO
E.
SO
2
View Answer & Discuss (5)
JAMB 1984
1418
3Cl
2
+ 2NH
3
\(\to\) N
2
+ 6HCl. In the above reaction, ammonia acts as
A.
a reducing agent
B.
an oxidizing agent
C.
an acid
D.
a catalyst
E.
a dry agent
View Answer & Discuss (4)
JAMB 1984
1419
In the Haber process for the manufacture of ammonia, finely divided iron is used as
A.
an ionizing agent
B.
a reducing agent
C.
a catalyst
D.
a dehydrating agent
E.
an oxidizing agent
View Answer & Discuss (8)
JAMB 1984
1420
The hybridization of the carbon atom in ethyne is
A.
sp
4
B.
sp
3
C.
sp
2
D.
sp
E.
s
View Answer & Discuss (16)
JAMB 1984
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