Chemistry Past Paper Questions

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Q 1261:A reverse reaction is one
A
Which proceeds from left to right
B
In which reactants react to form products
C
which slow down gradually
D
which speeds up gradually
Gujranwala, 2016
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Q 1262:A reverse reaction is one,
A
Which proceeds from left to right
B
In which reactants react to form products
C
which slow down gradually
D
which speeds up gradually
Gujranwala, 2016
View Answer
Q 1263:Acetic acid is used for
A
Flavoring food
B
Making explosives
C
Etching Designs
D
Cleaning Metals
Gujranwala, 2016
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Q 1264:Conversion of dead plants into coal by the action of bacteria and heat is called
A
Carbonication
B
Catenation
C
Hydrogenation
D
Cracking
Gujranwala, 2016
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Q 1265:Atoms react with each other because:
A
They attract each other
B
They are short of electrons
C
They want to attain stability
D
They want to disperse
Gujranwala, 2016
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Q 1266:Boiling point of alcohol is:
A
68oC
B
78oC
C
88oC
D
98oC
Gujranwala, 2016
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Q 1267:Colour of calcium flame in air is:
A
Green
B
White
C
Golden
D
Brick red
Gujranwala, 2016
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Q 1268:A bond pair in covalent molecules usually has:
A
One electron
B
Three electrons
C
Four electrons
D
Two electrons
Gujranwala, 2016
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Q 1269:Which non-metal is extremely hard?
A
graphite
B
Phosphorus
C
diamond
D
Iodine
Faisalabad, 2016
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Q 1270:Which shell consists of three sub-shells?
A
O-shell
B
M-shell
C
K-shell
D
L-shell
Faisalabad, 2016
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Total MCQs: 1548Page 127 of 155
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