Question

Statement 1: For a particular reaction, heat of combustion at constant pressure $\left(q_P\right)$ is always greater than that at constant volume $\left(q_V\right)$
Statement 2: Combustion reactions are invariably accomplished by increase in number of moles

• A. Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
• B. Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
• C. Statement 1 is True, Statement 2 is False
• D. Statement 1 is False, Statement 2 is False

Answer 1

Answer: (D)

For a particular reaction, the heat of combustion at constant pressure, (qp)(qp) is not always then that at constant volume (qvqv). Combustion reactions are invariably accomplished by decreasing in a number of moles.