1. Tardigrade
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  3. Chemistry
  4. Statement 1: For a particular reaction, heat of combustion at constant pressure (qP) is always greater than that at constant volume (qV) Statement 2: Combustion reactions are invariably accomplished by increase in number of moles

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Q. 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

Thermodynamics

Solution:

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.