Chemistry Past Paper Questions

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Q 301:Molecular formula of butane is:
A
C4H6
B
C4H12
C
C4H10
D
C4H8
Sahiwal, 2019
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Q 302:Nature of water is:
A
Polar
B
Non-polar
C
Acidic
D
Basic
Sahiwal, 2019
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Q 303:One of the following is used as jet fuel:
A
Lubricating oil
B
Fuel oil
C
Diesel oil
D
Kerosene oil
Sahiwal, 2019
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Q 304:Percentage of CO2 by volume present in dry air is:
A
0.03%
B
0.93%
C
20.94%
D
78.09%
Sahiwal, 2019
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Q 305:Percentage quantity of carbon in peat is:
A
60%
B
70%
C
80%
D
90%
Sahiwal, 2019
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Q 306:pH of neutral substances is always equal to:
A
0
B
5
C
7
D
14
Sahiwal, 2019
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Q 307:The color of hydrogen iodide gas is:
A
Black
B
Purple
C
Blue
D
Colourless
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Q 308:The colour of iodine gas is:
A
Purple
B
Orange
C
Black
D
White
Sahiwal, 2019
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Q 309:The concept of orbit of an atom was presented by:
A
J.J Thomson
B
Rutherford
C
Bohr
D
Plank
Sahiwal, 2019
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Q 310:The electronegativity of fluorine is:
A
1.0
B
2.6
C
4.0
D
3.0
Sahiwal, 2019
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Total MCQs: 1548Page 31 of 155
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