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2886
Which of the following will Increase the rate of reaction of Chips of a metal M as shown in the equation below?
M(s)+2HC1(aq) → MCI
2
(aq) + H
2
(g)
A.
Adding some distilled water
B.
Decreasing the temperature
C.
Diluting the hydrochloric acid
D.
Grinding the metal into powder
E.
Increasing the pressure
View Answer & Discuss (1)
NECO 2008
2887
Which of the following is a component of the car exhaust?
A.
Aluminium
B.
Calcium
C.
Iron
D.
Zinc
E.
Lead
View Answer & Discuss
NECO 2008
2888
The molecular formula of ethylbutanoate is?
A.
C
H
5
COOC
2
6
B.
C
3
H
COOC
2
H
7
C.
C
3
H
7
COOC
3
H
7
D.
C
3
H
7
COOC
4
H
9
E.
C
3
H
7
COOC
2
H
5
View Answer & Discuss (6)
NECO 2008
2889
The rate of a chemical reaction is NOT affected by one of these factors
A.
colour
B.
concentration
C.
presence of light
D.
surface area
E.
temperature
View Answer & Discuss (1)
NECO 2008
2890
Pipe-borne water is usually chlorinated in order to
A.
coagulate sediments in the water
B.
improve taste of the water
C.
kill harmful bacteria in the water
D.
make it pure
E.
remove the hardness in the water
View Answer & Discuss (1)
NECO 2008
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