A) zero
B) infinite
C) positive
D) negative
Correct Answer: A
Solution :
If during a process taking place in a system, heat (Q) neither enters the system nor leaves it, then the process is adiabatic that is Q = 0. From the formula of specific heat, we have \[c=\frac{Q}{m\,\Delta \,T}\] For adiabatic change Q = 0 \[\therefore \] c = 0
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