Chemistry Past Paper Questions

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Q 851:Dehydration of alcohol can be carried out with:
A
H2SO4
B
HCl
C
NaOH
D
KOH
Faisalabad, 2017
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Q 852:Depending upon the temperature variation, atmosphere is divided into how many regions?
A
1
B
2
C
3
D
4
Faisalabad, 2017
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Q 853:For the reaction 2A + B ⇌3C the expression for the equilibrium constant is:
A
[2A][B]/[3C]
B
[A]²[B]/[C³
C
[3C]/[2A][B]
D
[C]³/[A]²[B]
Faisalabad, 2017
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Q 854:In the beginning the rate of reverse reaction is:
A
negligible
B
moderate
C
very fast
D
slow
Faisalabad, 2017
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Q 855:Oxidation of alkenes produces:
A
Glyoxal
B
Glycol
C
Oxalic acid
D
Formic acid
Faisalabad, 2017
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Q 856:Night blindness is because of deficiency of:
A
Vitamin A
B
Vitamin E
C
Vitamin C
D
Vitamin D
Faisalabad, 2017
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Q 857:One atmospheric is equal to how many pascals?
A
101325
B
10325
C
10532
D
10523
Faisalabad, 2017
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Q 858:Ionization energy of sodium is:
A
377KJ/mole
B
403 KJ/mole
C
419 KJ/mole
D
496 KJ/mole
Faisalabad, 2017
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Q 859:Molecular formula of glucose is: ?
A
C6H12O6
B
CHO
C
CH2O
D
C2H4O2
Faisalabad, 2017
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Q 860:Electronegativity of fluorine is:
A
2.0
B
3.0
C
4.0
D
5.0
Faisalabad, 2017
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Total MCQs: 1548Page 86 of 155
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