Engineering Thermodynamics
One kg of carbon monoxide requires 4/7 kg of oxygen and produces

11/3 kg of carbon dioxide gas
11/7 kg of carbon dioxide gas
8/3 kg of carbon monoxide gas
7/3 kg of carbon monoxide gas

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Engineering Thermodynamics
Which is the incorrect statement about Carnot cycle?

It provides concept of maximising work output between the two temperature limits
It is used as the alternate standard of comparison of all heat engines
All of these
All the heat engines are based on Carnot cycle

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Engineering Thermodynamics
The door of a running refrigerator inside a room was left open. Which of the following statements is correct?

The temperature of the air in room will remain unaffected
The room will be cooled very slightly
The room will be cooled to the temperature inside the refrigerator
The room will be gradually warmed up

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