Question

Choose the incorrect statement related to an isobaric process

• A. $\frac{V}{T}=$ constant
• B. $W=p\Delta T$
• C. Heat given to a system is used up in raising the temperature only
• D. None of the above

Answer 1

The correct option is C Heat given to a system is used up in raising the temperature only

Given: Isobaric process.

Solution:

From ideal gas law, $PV=nRT$

In isobaric process, P is constant.

So,$V=\frac{nR}{P}T$

$\Rightarrow V=kT$

$\therefore \frac{V}{T}=constant$ $\to \left(1\right)$

$W=\int PdV$

$\Rightarrow W=\int P\frac{nr△T}{P}$

$\Rightarrow W=p\int dT$

$\Rightarrow W=p△T$ $\to \left(2\right)$

Heat given to the system can also decrease the temperature.

Hence the correct option is C.