Thermodynamics Questions

• The constant pressure, constant volume and constant pvn processes are regarded as irreversible process.
• When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel, the process is known as __________ of fuel.
• When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.
• Which of the following represents Otto cycle on temperature - entropy (T - s) diagram?
• There is no change in internal energy in an isothermal process.
• Which of the following is the lightest and most volatile liquid fuel?
• One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.
• Which of the following has the minimum atomic mass?
• Carbonisation of coal consists of
• According to Avogadro's law, the density of any two gases is __________ their molecular masses, if the gases are at the same temperature and pressure.
• The entropy __________ in an irreversible cyclic process.
• An adiabatic process is one in which
• The value of 1 mm of Hg is equal to
• The efficiency of Diesel cycle approaches to Otto cycle efficiency when
• The kinetic energy of molecules of a gas becomes zero at absolute zero temperature.
• The pressure exerted by an ideal gas is __________ of the kinetic energy of all the molecules contained in a unit volume of gas.
• The sum of internal energy (U) and the product of pressure and volume (p.v) is known as
• In the first law of thermodynamics, the total energy of the system remains constant.
• The value of specific heat at constant pressure (cp) is __________ that of at constant volume (cv).
• A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as