The following band-energy diagram represents:

If $\frac{^{n+2}C_6}{^{n-2}C_2} = 11$,then $n$ satisfies the equation

Which of the following is not a characteristic property of chemical equilibrium?

Heat energy is incident on the surface at the rate of $1000 ~J/min$. If the coefficient of absorption is $0.8$ and the coefficient of reflection is $0.1$,then the heat energy transmitted by the surface in $5$ minutes is: (in $~J$)

The $V-Q$ graph is shown below. What does the area of $\Delta OAB$ represent in this graph?

The ratio of the specific heat capacities of a gas is $1.5$. When the gas undergoes an adiabatic process, its volume is doubled and pressure becomes $P_1$. When the gas undergoes an isothermal process, its volume is doubled and pressure becomes $P_2$. If $P_1 = P_2$, the ratio of the initial pressures of the gas when it undergoes adiabatic and isothermal processes is