Which of the following statements are correct?
A
Two vessels A and B of equal capacity are connected to each other by a stop cock. Vessel A contains a gas at $$O^{o}C$$ and 1 atm pressure. Vessel B is completely evaculated. When the stop cock is opened, the final pressure of gas in each vessel will be 0.2 atm.
B
Vapour in equilibrium with its liquid at a contant temperature does not obey BOYLE'S law
C
Two bodies at different temperature $$T_1\space and\space T_2$$ are brought in thermal contact. When thermal equilibrium is attained, the temperature of each body is $$(T_1 + T_2)/2$$.
D
The coolant used in a car or a chemical or nuclear plant should have high specific heat.
Correct option is C. Vapour in equilibrium with its liquid at a contant temperature does not obey BOYLE'S law
