Which of the following statements is correct regarding the critical temperature $(T_c)$?
- AIt is the highest temperature at which liquid and vapour can coexist.
- BBeyond the critical temperature,there is no distinction between the two phases and a gas cannot be liquefied by compression.
- CAt the critical temperature $(T_c)$,the surface tension of the system is zero.
- DAll of the above.
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Similar Questions
At what point does surface tension vanish?
Medium
View SolutionThe isotherms of a gas are shown below:
Among the following:
$(i)$ At $T_1$,the gas cannot be liquefied.
$(ii)$ At point $B$,liquid starts to appear at $T_2$.
$(iii)$ $T_c$ is the highest temperature at which the gas can be liquefied.
$(iv)$ At point $A$,a small increase in pressure condenses the whole system to a liquid.
The correct statements are:
Among the following:
$(i)$ At $T_1$,the gas cannot be liquefied.
$(ii)$ At point $B$,liquid starts to appear at $T_2$.
$(iii)$ $T_c$ is the highest temperature at which the gas can be liquefied.
$(iv)$ At point $A$,a small increase in pressure condenses the whole system to a liquid.
The correct statements are:
DifficultKVPY 2020
View SolutionTwo different gases $A$ and $B$ are filled in separate containers of equal capacity under the same conditions of temperature and pressure. On increasing the pressure slightly,gas $A$ liquefies,but gas $B$ does not liquefy even on applying high pressure until it is cooled. Explain this phenomenon.
Medium
View SolutionGases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases.
$Gases$ $H_2$ $He$ $O_2$ $N_2$ $Critical \ temperature \ (K)$ $33.2$ $5.3$ $154.3$ $126$
From the above data,what would be the decreasing order of liquefaction of these gases?
| $Gases$ | $H_2$ | $He$ | $O_2$ | $N_2$ |
| $Critical \ temperature \ (K)$ | $33.2$ | $5.3$ | $154.3$ | $126$ |
From the above data,what would be the decreasing order of liquefaction of these gases?
Medium
View SolutionWhat happens when $CO_2$ is compressed and expanded at a constant temperature of $30.98 \, ^\circ C$?
Easy
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