Question

Assertion :If pressure is increased, bulk modulus of gases will increase. Reason: With increase in pressure, temperature of gas also increases.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is C Assertion is correct but Reason is incorrect

• For bulk modulus only pressure and volume are changed.
  
• Rest i.e temperature and moles are kept constant.
  
• Bulk modulus $B=\frac{\Delta p}{\frac{\Delta V}{V}}$
  
• If we increase $p,\Delta p$ will increase and magnitude of B will increase.
  
• But temperature is constant here,no effect on temperature.
  

So, assertion is correct but reason is incorrect.