In which of the processes, does the internal energy of the system remain constant?
Options
(a) Isobaric (b) Isothermal (c) Adiabatic (d) Isochoric
Correct Answer:
Isothermal
Explanation:
No explanation available. Be the first […]
A Carnot engine, having an efficiency of η=1/10 as heat engine, is used as a refrigerator. If the work done on the system is 10J, the amount of energy absorbed from the reservoir at lower […]
An adiabatic process occurs at constant
Options
(a) Temperature (b) Pressure (c) Heat (d) Temperature and pressure
Correct Answer:
Heat
Explanation:
No explanation available. Be the first to write the explanation for this […]
If the r.m.s. velocity of a gas is v, then
Options
(a) v²T=constant (b) v²/T=constant (c) vT²=constant (d) v is independent of T.
Correct Answer:
v²/T=constant
Explanation:
No explanation available. Be the first […]
Ist law of thermodynamics is based on
Options
(a) Conservation of momentum (b) Conservation of energy (c) Conservation of mass (d) None of these
Correct Answer:
Conservation of energy
Explanation:
No explanation available. […]
The work of 146 kJ is performed in order to compress one kilo mole fo gas adiabatically and in this process the temperature of the gas increases by 7⁰C. The gas is (R=8.3 J mol⁻¹ […]
When you make ice cubes, the entropy of water
Options
(a) Does not change (b) Increases (c) Decreases (d) May either increase or decrease depending on the process used.
Correct Answer:
Decreases
Explanation: […]
A bubble is rising from bottom of a lake. The volume of bubble becomes 8 times as it reaches the top. The atmospheric pressure is equal to H, The depth of the lake
Options […]
34 gram of water at 30⁰C is poured into a calorimeter at 15⁰C. The temperature of water is 20⁰C when equilibrium is achieved. The water equivalent of the calorimeter is
Options
(a) 68g […]
In adiabatic expansion, product of PV
Options
(a) Decreases (b) Increases (c) Changes erratically (d) None of these
Correct Answer:
Decreases
Explanation:
In adiabatic expansion, there is cooling effect. Therefore the temperature falls.
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