Engineering Thermodynamics
According to Avogadro's Hypothesis

Gases have two values of specific heat
Product of the gas constant and the molecular weight of an ideal gas is constant
The molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature
The sum of partial pressure of mixture of two gases is sum of the two

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Engineering Thermodynamics
The specific heat at constant volume is

The amount of heat required to raise the temperature of 1 kg of water through one degree
The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure
Any one of the above
The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume

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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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