Chemical Process Calculation Questions and Ans

Question 1
Marks : +2 | -2
Pass Ratio : 100%
When vapour is cooled at constant total system volume, the _______ changes.
Volume
Pressure
Temperature
None of the mentioned
Explanation:
When vapour is cooled at constant total system volume, the pressure changes.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Leonard set up the experiment shown below.
Both A and B
Neither A nor B
Only A
Only B
Explanation:
Boiling of water forms steam and due to heat loss condensation is occurring.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
In a vaporization process __________ changes to _________
Vapor, liquid
Vapor, solid
Solid, Vapor
Liquid, Vapor
Explanation:
In vaporization process liquid changes to vapor.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
If the fraction of water vapour at 127 Degree Celsius and 1 atm is 0.5, what is the fraction of water vapour at 27 Degree C and 1 atm?
0.275
0.375
0.475
0.875
Explanation:
Fraction = 0.5*300/400 = 0.375.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
When gas changes to liquid through the process of condensation, the temperature
Increases
Decreases
Remains constant
None of the mentioned
Explanation:
Temperature is constant during condensation.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
When the air temperature rises the saturation mixing ratio
Increases
Decreases
Remains same
None of the mentioned
Explanation:
When the air temperature rises the saturation mixing ratio increases.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
When vapour is compressed isothermally the ____________ changes.
Volume
Pressure
Temperature
None of the mentioned
Explanation:
When vapour is compressed isothermally the volume changes.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
Water changes into water vapour only when boiling occurs. The statement is
Correct
Incorrect
Always correct
None of the mentioned
Explanation:
In other operation as well water result in vapour.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
In a condensation process, _______ to _________
Gas, Solid
Gas, Liquid
Liquid, Gas
Liquid, Solid
Explanation:
In a condensation process, Gas to Liquid.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Condensation starts ________ point.
Dew point
Bubble point
Triple point
None of the mentioned
Explanation:
Condensation starts Dew point.