Chemistry Past Paper Questions

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Q 1021:Specific heat capacity of water is:
A
4.2Jg-1K-1
B
4.2KJ-1K-1
C
2.4KJg-1K-1
D
2.4Jg-1K-1
Multan, 2017
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Q 1022:Temporary hardness is removed by adding:
A
Quick lime
B
Slaked lime
C
Limestone
D
Lime water
Multan, 2017
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Q 1023:The cause of Global warming:
A
CO2 gas
B
SO2 gas
C
NOx gas
D
O3 gas
Multan, 2017
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Q 1024:The chemical formula of chloroform is:
A
CH3Cl
B
CH2Cl2
C
CCl4
D
CHCl3
Multan, 2017
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Q 1025:The chemical formula of rust is:
A
FeSO4.10H2O
B
Fe2O3.AlCl2
C
Fe2O3.nH2O
D
Fe(OH)3.4H2O
Multan, 2017
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Q 1026:The elements which are present on the extreme left side of the periodic table are called:
A
Alkali metals
B
Alkaline earth metals
C
Halogen group
D
Noble gases
Multan, 2017
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Q 1027:The empirical formula of glucose is:
A
H2CO3
B
CH
C
CH2O
D
HO
Multan, 2017
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Q 1028:The gas collected at the cathode is:
A
Cl2
B
O3
C
H2
D
O
Multan, 2017
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Q 1029:The most abundant element occurring in the earth’s crust by weight is:
A
Silicon
B
Oxygen
C
Aluminium
D
Iron
Multan, 2017
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Q 1030:The number of elements in sixth period is:
A
8
B
18
C
22
D
32
Multan, 2017
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Total MCQs: 1548Page 103 of 155
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