Chemical Process Calculation

Ideal Gas

Question 1
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Specific molar volume for an ideal gas is
Volume per mass
Volume per molecular weight
Volume per mole
None of the mentioned
Explanation:
Specific molar volume for an ideal gas is Volume per mole.
Question 2
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A ________ is completely homogeneous and uniform state of matter
Property
State
Phase
None of the mentioned
Explanation:
State of a system gives the condition of a system as specified by its properties.
Question 3
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The inverse of molar volume is
Molar density
Mole fraction
Molar specific volume
None of the mentioned
Explanation:
The inverse of molar volume is Molar density (V/n).
Question 4
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For an ideal gas, incorrect statement is
Molecules do not occupy any space
No attractive force exist between the molecules
The gas molecules move in random, straight line motion
None of the mentioned
Explanation:
Conditions for a gas to behave as predicated by the ideal gas law.
Question 5
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Correct statement is
Gases at low pressure or high temperature behave as an ideal gas
Gases at high pressure or low temperature behave as an ideal gas
Gases at high density behave as an ideal gas
None of the mentioned
Explanation:
Gases at low pressure or high temperature behave as an ideal gas.
Question 6
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What is the density of Carbon-di-oxide in kg/m3 at 27 degree celcius and 100 KPa?
1.76
2.76
3.76
4.76
Explanation:
density = (Pressure*Molecular weight)/(Gas constant*Temperature).
Question 7
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At constant temperature the pressure of an ideal gas is doubled its density becomes
Half
Double
Same
None
Explanation:
Density is proportional to pressure.
Question 8
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1 atm pressure and 0°C’ condition is known as
Room temperature and pressure
Standard temperature and pressure
Atmospheric temperature and pressure
None of the mentioned
Explanation:
1 atm pressure and 0°C condition is known as standard temperature and pressure (STP).
Question 9
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For the universal gas constant, (cm3)(atm)/(K)(g mole) is an appropriate unit.
Correct
Incorrect
Can`t say
None of the mentioned
Explanation:
Gas constant = R = PV/nT.
Question 10
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What is the volume of 20 gms of Oxygen in Litre at standard conditions?
10
12
14
16
Explanation:
At standard conditions, 1 mole of of gas occupy 22.4 litre volume.