MCQ
Entropy of a system decreases .........
  • A
    When heat is supplied to a system at constant temperature
  • When heat is taken out from the system at constant temperature
  • C
    At equilibrium
  • D
    In any spontaneous process

Answer

Correct option: B.
When heat is taken out from the system at constant temperature
b
(b)

Entropy of a system decreases when heat is taken out of the system at constant temperature.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Oil spreads over the surface of water whereas water does not spread over the surface of the oil, due to
A stone is dropped from a certain height and at the same time another stone is thrown horizontally from the same height which one will reach the ground earlier:
An $\alpha-$particle is bombarded on ${ }^{14}\mathrm{~N}$. As a result, a ${ }^{17}\mathrm{O}$ nucleus is formed and a particle is emitted. This particle is a:
In which case the thermal conductivity increases from left to right
A bomb of mass $10\, kg$ explodes into two pieces of masses $4\, kg$ and $6\, kg$. If  kinetic energy of $4\, kg$ piece is $200\, J$. Find out kinetic energy of $6\, kg$ piece
A small ball of mass $m$ and density $\rho$ is dropped in a viscous liquid of density $\rho_0$. After sometime, the ball falls with constant velocity. The viscous force on the ball is:
Two tuning forks have frequencies $450\, Hz$ and $454\, Hz$ respectively. On sounding these forks together, the time interval between successive maximum intensities will be .... $sec$
The speed of a wave produced in water is given by $v=\lambda^a g^b \rho^c$. Where $\lambda$, g and $\rho$ are wavelength of wave, acceleration due to gravity and density of water respectively. The values of $a , b$ and $c$ respectively, are
A ball is rolled off along the edge of a horizontal table with velocity $4 m/s$. It hits the ground after time $0.4 \,\,s$. Which of the following are correct?
Two blocks of masses $m$ and $M$ are connected by means of a metal wire of cross-sectional area $A$ passing over a frictionless fixed pulley as shown in the figure. The system is then released. If $M = 2\, m$, then the stress produced in the wire is