Chemistry Past Paper Questions

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Q 901:General formula of alkyl radical is:
A
CnH2n+2
B
CnH2n-2
C
CnH2n+1
D
CnH2n Mark
Gujranwala, 2017
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Q 902:General formula of alkyl radical:
A
CnH2n+2
B
CnH2n-2
C
CnH2n+1
D
CnH2n
Gujranwala, 2017
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Q 903:Hardness of water is of:
A
2
B
3
C
4
D
5
Gujranwala, 2017
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Q 904:In Haber's process the catalyst used is
A
Nickel
B
Iron
C
Cadmium
D
Sodium
Gujranwala, 2017
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Q 905:Matte is a mixture of:
A
FeS and CuS
B
Cu2O and FeO
C
Cu2S and FeS
D
CuS and FeO
Gujranwala, 2017
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Q 906:Molar concentration (mol dm-3) is expressed as.
A
{}
B
()
C
[]
D
Φ
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Q 907:Nitrogen and hydrogen were reacted together to make ammonia. what will be present in the equilibrium mixture? N2+3H2 ⇌ 2NH3, Kc=2.86mol-2dm6
A
NH3 only
B
N2, H2 and NH3
C
N2 and H2 only
D
H2 only
Gujranwala, 2017
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Q 908:Normally water is weakly acidic because of gas:
A
SO3 gas
B
CO2 gas
C
SO2 gas
D
NO2 gas
Gujranwala, 2017
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Q 909:Molarity is the number of moles of solute dissolved in:
A
1 kg of solution
B
100 g off
C
1 dm3 solvent
D
1 dm3 of solution
Gujranwala, 2017
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Q 910:Molecular mass of H3PO4 is:
A
98 g/mole
B
100 g/mole
C
63 g/mole
D
174 g/mole
Gujranwala, 2017
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Total MCQs: 1548Page 91 of 155
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