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Online Tests
Chemistry Fsc Part 1 Chapter 3 Online Test MCQs With Answers
Question # 1
Gas equation is derived by combining
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Avogadro's and Charles's Law
Boyle's and Charles's Law
Avogadro's and Boyle's Law
Avogadro's, Boyle's and Charles's Law
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Question # 2
If 2 mol of an ideal gas at 546 K occupy a volume of 44.8 dm3, the pressure must be.
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1 atm
2 atm
3 atm
4 atm
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Question # 3
The commonly used unit of pressure by meteorologists is.
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Atmosphere
Pascal
Milli
Pound inch3
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Question # 4
A real gas obeying Van der Waal's equation will resemble ideal gas if.
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Both a and b are large
Both a and b are small or zero
A is small and b is large
A is large and b is small
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Question # 5
The Van der Waals' equation explain the behaviour of.
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Ideal gas
Real gas
Vapours
Non ideal gases
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Question # 6
If absolute temperature of the gas is doubled and the pressure is reduced to one half the volume the gas will.
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Remains uncharged
Increase four time
Reduce to 1/4
Be doubled
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Question # 7
Weak intermolecular forces are present in.
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Only gases
Only liquid
Only solids
gases, liquids and solids
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Question # 8
In gas occupies a volume of 2 dm
3
at 27°C and I atm pressure. The expression for its volume at S.T.P. is
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Question # 9
For a gas obeying Boyle's law if pressure is doubled, the volume becomes.
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Double
One half
Four times
Remains constant
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Question # 10
The molar volume of CO
2
is maximum at
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STP (0°C and 1 atm)
127° C and 1 atm
0°C and 2 atm
273°C and 2 atm
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Question # 11
If absolute temperature of gas is doubled and the pressure is reduced to one half, the volume of the gas will.
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Remain unchanged
Increase four times
Reduce to 1/4
Be doubled
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Question # 12
The number of molecules in one dm
3
of water is close to
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Question # 13
If temperature of one mole of ideal gas at 273 K and one atmospheric pressure is increased by 1 K, amount of energy absorbed is.
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0.082 dm3 atm
1.987 cal.
8.313 J
All are correct.
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Question # 14
Which is not example of natural plasma.
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Lightening bolt
Aurora
Neon sign
Sum
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Question # 15
The molecules of a gas show more deviation from ideal behaviour at low temperature, because
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Attractive force dominate at low temperature
Kinetic energies are increased
Collisions become less frequent
Densities of the gases increase
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Question # 16
At which distance a molecule is present from its neighbor molecules of its own diameter, at room temperature.
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100 times
200 times
300 times
400 times
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Question # 17
The temperature of natural plasma is about.
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200000
o
C
10000
o
C
5000
o
C
1000
o
C
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Question # 18
Feeling uncomfortable breathing in un pressurized cabins is due to
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High pressure of CO2
Fatigue
Low pressure of O2
Low presssure of CO2
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