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Engineering Thermodynamics

Engineering Thermodynamics
Which of the following gas has a minimum molecular mass?

Nitrogen
Hydrogen
Methane
Oxygen

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Engineering Thermodynamics
For the same compression ratio, the efficiency of dual combustion cycle is

Less than Diesel cycle
Greater than Diesel cycle
Greater than Diesel cycle and less than Otto cycle
Less than Diesel cycle and greater than Otto cycle

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Engineering Thermodynamics
One molecule of oxygen consists of __________ atoms of oxygen.

16
4
2
8

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Engineering Thermodynamics
No liquid can exist as liquid at

273°K
Centre of earth
Zero pressure
Vacuum

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Engineering Thermodynamics
The amount of heat required to raise the temperature of __________ water through one degree is called kilojoules.

100 g
1000 g
1 g
10 g

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Engineering Thermodynamics
The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is

4.086
0.086
1.086
1.086

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