If a substance goes though a cycle of changes returning back to origin – McqOptions

MCQOPTIONS

1.	If a substance goes though a cycle of changes returning back to original state, the change in entropy is
A.	positive
B.	negative
C.	zero
D.	positive or negative depending upon originalstate
Answer» C. zero

Discussion

No Comment Found

Related MCQs

When two bodies are in thermal equilibrium with a third body they are also in thermal equilibrium with each other. This statement is called
The value of one bar (in SI units) is equal to
A series of operations, which take place in a certain order & restore the initial condition is known as
During an adiabatic compression when temperature increase by 100% the pressure increases by 1000%. The ratio of specific heats, ? is
During a constant pressure expansion of a gas 33.3 % heat is converted into work while the temperature rises by 20K. The specific heat of gas at constant pressure is
Entropy at absolute zero temperature is zero for a
1.6 Kg of air is expanded at constant pressure from 100 C to 0 C resulting in entropy change of - 2.0 J/K 3.2 Kg of air is cooled at constant volume from 100 C to 0 C with a change in entropy of -3.0 J/K. The ratio Cp/ Cv is
During a polytropic expansion work obtained is 1.8 times the heat transferred. If ?=1.4, n will be
Average temp.at which heat is supplied is increased in
Entropy of mixture of two gases after sudden mixing is