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2921
A colourless gas with characteristics odour which dissolves in water to form an alkaline solution is
A.
ammonia
B.
carbon(IV)oxide
C.
hydrogen chloride
D.
sulphur (IV) oxide
E.
sulphur (VI) oxide
View Answer & Discuss (1)
NECO 2009
2922
Which of the following equations is NOT balanced?
A.
CH
4
(g) + 20
2
(9) → CO
2
(g) + 2H
2
O(g)
B.
CU(S) + HNO
3
(aq) → Cu(NO
3
)
2
(aq) + 4H
2
O(I) + NO(g)
C.
2KCIO
3
(s) → 2KCI(s)+ 3O
2
(g)
D.
NaH(s) + H
2
O(1) → NaOH(aq) +H
2
(g)
E.
Na
2
SO
4
(aq) + BaCl
2
(aq) → BaSO
4
(s) + 2NaCl(aq)
View Answer & Discuss
NECO 2009
2923
The process involved in the decomposition of sugar by an enzyme is called
A.
dehydration
B.
esterification
C.
fermentation
D.
polymerization
E.
saponification
View Answer & Discuss (3)
NECO 2009
2924
Compound with the general formula CnH\(_{2n+2}\) belong to the_______ group
A.
alkanal
B.
alkane
C.
alkanoate
D.
alkene
E.
alkyne
View Answer & Discuss (11)
NECO 2009
2925
Which of the following non-metals reacts most readily with metals?
A.
Carbon
B.
Chlorine
C.
Nitrogen
D.
Phosphorus
E.
Sulphur
View Answer & Discuss (3)
NECO 2009
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