The gas in a refrigerator caused cooling on expansion because:

The density of gas goes down

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Heat of the gas is lost as work is done by the gas

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Work done by the gas is converted into heat

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The heat is spread over a larger space

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Heat of the gas is lost as work is done by the gas
The entropy of a system is a measure of randomness or disorder of the molecules.
$Δ S = \frac{q_{r e v}}{T}$
$Δ S > 0$ , Increase in randomness, heat is absorbed.
$Δ S < 0$ , Decrease in randomness, heat is evolved.
Therefore, if $Δ S > 0$ means that the system becomes more disordered.

Suggest Corrections

Similar questions

The gas in a refrigerator causes cooling on expansion because:
(a) The density of gas goes down
(b) Heat of the gas is lost as work is done by the gas
(c) Work done by the gas is converted into he

Q. A perfect gas goes from state

A

to state

B

by absorbing

8 \times 10^{5} J

of heat and doing

6.5 \times 10^{5} J

of external work. It is now transferred between the same two states in another process in which it absorbs

10^{5} J

of heat. In the second process,

Q. A quantity of heat Q is supplied to a monoatomic ideal gas which expands at constant pressure. The fraction of heat that goes into work done by the gas is :

Q. A quantity of heat ‘Q’ is supplied to a mono-atomic ideal gas which expands at constant pressure. The fraction of heat that goes into work done by the gas is:

Q. A monatomic ideal gas expands at constant pressure, with heat Q supplied. The fraction of Q which goes as work done by gas is

Join BYJU'S Learning Program