Chemistry Past Paper Questions

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Q 341:Incomplete combustion of alkanes produces
A
Carbon dioxide
B
Carbon monoxide
C
Carbon monoxide and carbon black
D
Carbon dioxide and carbon black
Sargodha, 2019
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Q 342:Just above the Earth's surface is:
A
Stratosphere
B
Mesosphere
C
Troposphere
D
Thermosphere
Sargodha, 2019
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Q 343:Kc is equal to:
A
Kf/Kr
B
Kr/Kf
C
Rf/Rr
D
Rr/Rf
Sargodha, 2019
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Q 344:KCl is n example of:
A
Normal salts
B
Double salts
C
Mixed salts
D
Complex salt
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Q 345:Lactic acid is found in:
A
Sour Milk
B
Apple
C
Grapes
D
Lemon
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Q 346:For a reaction between PCl3 and Cl2 to form PCl5, the units of Kc is:
A
mol dm-3
B
mol1 dm3
C
mol-1 dm3
D
mol dm3
Sargodha, 2019
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Q 347:Formation of water from hydrogen and oxygen is:
A
redox reaction
B
acid-base reaction
C
Neutralization
D
decomposition
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Q 348:How many covalent bonds does C2H2 molecule have:
A
2
B
3
C
4
D
5
Sargodha, 2019
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Q 349:Example of Aqueous solution is:
A
sugar in water
B
Ether
C
Petrol
D
Benzene
Sargodha, 2019
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Q 350:First ionization energy of sodium atom is:
A
+496 kJmol-1
B
+498 kJmol-1
C
+696 kJmol-1
D
+698 kJmol-1
Sargodha, 2019
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Total MCQs: 1548Page 35 of 155
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