Engineering Thermodynamics
Carbonization of coal consists of

Drying and crushing the coal to a fine powder
Heating the wood with a limited supply of air to temperature not less than 280°C
Moulding the finely ground coal under pressure with or without a binding material
None of these

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Engineering Thermodynamics
Which is the incorrect statement about Carnot cycle?

All of these
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 the heat engines are based on Carnot cycle

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Engineering Thermodynamics
According to Avogadro's law, for a given pressure and temperature, each molecule of a gas

Occupies same volume
Occupies volume proportional to its specific weight
Occupies volume inversely proportional to its molecular weight
Occupies volume inversely proportional to its specific weight

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