Chemistry Past Paper Questions

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Q 751:Amount of carbon in antheracite coal is:
A
60%
B
70%
C
80%
D
90%
Sargodha, 2018
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Q 752:Crude oil is heated in the furnace upto:
A
350oC
B
300oC
C
450oC
D
400oC
Sargodha, 2018
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Q 753:Electronegativity of chlorine is:
A
3.1
B
3.2
C
3.3
D
3.4
Sargodha, 2018
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Q 754:Empirical formula of benzene is:
A
CH
B
OH
C
NH3
D
CH4
Sargodha, 2018
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Q 755:Example of "gas in liquid" is:
A
air
B
oxygen in water
C
mist
D
smoke in air
Sargodha, 2018
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Q 756:Gas density is expressed in:
A
mg cm-3
B
g cm-3
C
g dm-3
D
kg/dm-3
Sargodha, 2018
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Q 757:How many elements are there in the second period of long form of periodic table?
A
8
B
18
C
23
D
32
Sargodha, 2018
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Q 758:Atomic number of sodium is:
A
11
B
10
C
12
D
13
Sargodha, 2018
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Q 759:Brass is solid solution of:
A
C + Cu
B
An + Cu
C
Zn + Ag
D
Au + Zn
Sargodha, 2018
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Q 760:Charge on neutron is:
A
Negative
B
Positive
C
No
D
Partial positive
Sargodha, 2018
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Total MCQs: 1548Page 76 of 155
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