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Introduction to the tetravalency of carbon
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2866
Which method is used for the purification of copper from its ore?
A.
distillation
B.
electrochemical
C.
electrolysis
D.
neutralization
E.
reduction
View Answer & Discuss (2)
NECO 2003
2867
Ethene decolourises acidified potassium tetraoxomanganate(VII) solution. Which gas will decolourise bromine water?
A.
CH
4
B.
C
2
H
6
C.
C
3
H
6
D.
C
3
H
8
E.
C
6
H
6
View Answer & Discuss (9)
NECO 2003
2868
What is formed when starch is completely hydrolysed?
A.
fructose
B.
glucose
C.
lactose
D.
maltose
E.
sucrose
View Answer & Discuss (2)
NECO 2003
2869
Which hydrocarbon does NOT exhibit structural isomerism?
A.
C
3
H
6
B.
C
4
H
6
C.
C
4
H
8
D.
C
4
H
10
E.
C
5
H
12
View Answer & Discuss (3)
NECO 2003
2870
Why is tetraoxosulphate(VI) acid NOT used for making carbon dioxide from calcium carbonate? It is
A.
a dehydrating agent
B.
a strong acid
C.
an oxidising agent
D.
dibasic
E.
forms insoluble calcium tetraoxosulphate(Vl)
View Answer & Discuss (2)
NECO 2003
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