Chemistry Past Paper Questions

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Q 1471:The conjugate base of sulphuric acid is:
A
SO2-3
B
S2-
C
HSO-3
D
HSO-4
Sahiwal, 2016
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Q 1472:Ozone is beneficial for us at it:
A
absorbs infrared radiations
B
absorbs ultraviolet radiations
C
absorbs chlorofluorocarbons
D
absorbs air pollutants
Sahiwal, 2016
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Q 1473:Pitch is a black residue of:
A
Coke
B
Coal tar
C
Coal
D
Coal Gas
Sahiwal, 2016
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Q 1474:Temporary hardness is because of:
A
Ca(HCO3)2
B
CaCO3
C
MgCO3
D
MgSO4
Sahiwal, 2016
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Q 1475:The amount of energy given out when an electron is added to an atom, is called:
A
Lattice energy
B
Ionization Energy
C
Electronegativity
D
Electron Affinity
Sahiwal, 2016
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Q 1476:The aqueous solution of NaCl is called:
A
Starch solution
B
Chloride solution
C
Carbonated solution
D
Brine
Sahiwal, 2016
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Q 1477:The bond formed between metal atoms due to mobile electrons is:
A
Ionic bond
B
covalent bond
C
Coordinate bond
D
Metallic bond
Sahiwal, 2016
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Q 1478:The compound considered as universal solvent is:
A
Alcohol
B
Water
C
Benzene
D
Perol
Sahiwal, 2016
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Q 1479:The empirical formula of glucose is:
A
C2H6O3
B
CHO
C
CH2O
D
C5H10O3
Sahiwal, 2016
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Q 1480:One atmospheric pressure is equal to pascals.
A
101325
B
10325
C
106075
D
10523
Sahiwal, 2016
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Total MCQs: 1548Page 148 of 155
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