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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
The work done in isothermal compression compared to that in adiabatic compression will be

More
Less
Same
More or less depending upon the extent of work done

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Chemical Engineering Thermodynamics
Entropy of the system decreases, when

Water is converted into ice
Snow melts into water
Both B & C
A gas expands spontaneously from high pressure to low pressure

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Chemical Engineering Thermodynamics
Sublimation temperature of dry ice (solid CO₂) is __________ °C.

5
0
-78
-273

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Chemical Engineering Thermodynamics
A nozzle is a device, which

Reduces both kinetic energy and pressure
Reduces kinetic energy and increases pressure
Increases kinetic energy and decreases pressure
Increases both kinetic energy and pressure

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Chemical Engineering Thermodynamics
On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will

Decrease
Increase in summer and will decrease in winter
Remain same
Increase

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Chemical Engineering Thermodynamics
Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = Cp/Cv = 7/5) and the process to be reversible, is

300(33/7)
300(32/7)
300(35/7)
300(33/5)

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MORE MCQ ON Chemical Engineering Thermodynamics

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