Chemistry Past Paper Questions

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Q 351:Maximum density of water at 4oC is:
A
1 gcm-3
B
2 gcm-3
C
3 gcm-3
D
4 gcm-3
Sargodha, 2019
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Q 352:Night blindness is because of deficiency of:
A
Vitamin A
B
Vitamin E
C
Vitamin C
D
Vitamin D
Sargodha, 2019
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Q 353:Temporary hardness is because of:
A
Ca(HCO3)2
B
CaCO3
C
MgCO3
D
MgSO4
Sargodha, 2019
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Q 354: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
Sargodha, 2019
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Q 355:The Density of gold is:
A
2.70 g/cm3
B
7.86 g/cm3
C
19.3 g/cm3
D
4.88 g/cm3
Sargodha, 2019
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Q 356:The example of Triple covalent bond is:
A
N2
B
H2
C
O2
D
HCl
Sargodha, 2019
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Q 357:The isotope C-12 is present in abundance of:
A
99.7%
B
98.9%
C
97.6%
D
96.9%
Sargodha, 2019
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Q 358:One amu (atomic mass unit) is equivalent to:
A
1.66 x 10-24 mg
B
1.66 x 10-24 g
C
1.66 x 10-24 Kg
D
1.66 x 10-23 g
Sargodha, 2019
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Q 359:Mist is an example of solution:
A
Liquid in gas
B
Gas in liquid
C
Solid in gas
D
Gas in solid
Sargodha, 2019
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Q 360:Morality is the number of moles of solute dissolved in:
A
1 kg of solution
B
100 g of solvent
C
1 dm3 solvent
D
1 dm3 of solution
Sargodha, 2019
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Total MCQs: 1548Page 36 of 155
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