A. Heat absorbed
B. Work done
C. Both A. & B
D. Neither A. nor B
Related Mcqs:
- The internal energy of a gas obeying P (V – b) RT (where, b is a positive constant and has a constant Cv), depends upon its________________?
A. Pressure
B. Volume
C. Temperature
D. All A, B. & C - In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is_______________?
A. More
B. Less
C. Same
D. Unpredictable; depends on the particular reaction - The internal energy of an ideal gas does not change in a reversible _____________ process?
A. Isothermal
B. Adiabatic
C. Isobaric
D. Isometric - With increase in temperature, the internal energy of a substance___________________?
A. Increases
B. Decreases
C. Remains unchanged
D. May increase or decrease; depends on the substance - A car tyre of volume 0.057 m3 is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is__________________?
A. 380
B. 630
C. 760
D. 880 - A gas at 0°C was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be________________?
A. 0°C
B. 0°K
C. -136.5°C
D. -136.5°K - For an isothermal process, the internal energy of a gas____________________?
A. Increases
B. Decreases
C. Remains unchanged
D. Data insufficient, can’t be predicted - Internal energy change of a system over one complete cycle in a cyclic process is__________________?
A. Zero
B. +ve
C. -ve
D. Dependent on the path - Internal energy is equal to the heat absorbed in case of a/an ______________ process?
A. Constant volume
B. Polytropic
C. Adiabatic
D. Constant pressure - When a gas in a vessel expands, its internal energy decreases. The process involved is________________?
A. Reversible
B. Irreversible
C. Isothermal
D. Adiabatic
