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The temperature above which a gas cannot...

The temperature above which a gas cannot be liquified even on application of high pressure is called 

A

boiling point

B

freezing point

C

critical temperature

D

Boyle's temperature

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The correct Answer is:
C
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The essential conditions for liquefaction of gases were discovered by Andrews in 1869 as a result of his study of pressure-volume-temperature relationship for CO_(2) . It was found that above a certain temperature, it was impossible to liquefy a gas whatever the pressure was applied. The temperature below which the gas can be liquefied by the application of pressure alone is called critical temperature (Tc). The pressure required to liquefy a gas at this temperature is called the critical pressure (Pc). The volume occupied by one mole of the substance at the critical temperature and pressure is called critical volume. Critical constants are related with van der waals' constant as follows: V_( c) = 3b, P_( c) =a/(27b^(2)), T_( c) =(8a)/(27 Rb) The values of critical volumes of four gases A, B, C and D are 0.025L, 0.312L, 0.245L and 0.432L respectively. The gas with larger molecular diameter will be :

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A gas can be liquefied by pressure alone when its temperature is

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Consider following statements : (A): The gas whose critical temperature is above room temperature can be liquified by applying sufficient pressure to the gas. (B): The gas whose critical temperature is below room temperature can be liquified by the temperature below T_c . Select correct statement

AAKASH SERIES-SURFACE CHEMISTRY-OBJECTIVE EXERCISE - 1 (ADSORPTION)
  1. Adsorption is multilayered in case of

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  2. Which of the following is not a characteristic of chemisorption

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  3. The temperature above which a gas cannot be liquified even on applicat...

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  4. The higher the critical temperature of the gas

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  5. Freundlich adsorption isotherm is given by the expression (x)/(m)=kp^(...

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  6. The plot of x/m versus temperature at constant pressure is called

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  7. Which of the following is adsorbed to a maximum extent on a given amou...

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  8. Which statement is correct about physical adsorption?

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  9. When 0.1M CH(3)COOH solution is shaken with activated charcoal and the...

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  10. The phenomenon of simultaneous absorption and adsorption is called -

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  11. (x)/(m)=KC^(1//n) where C = Concentration of a m solution, x = wt of a...

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  12. A graph drawn between 'log.(x)/(n)’ and log p on 'X' and 'Y' axis resp...

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  13. Which of the following is not correct

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  14. Which of the following can not act as an adsorbent?

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  15. Which can adsorb maximum amount of H(2)?

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  16. During activation of charcoal -

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  17. The energy of molecules present on the surface of a substance is -

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  18. Which of the following is not correct

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  19. The correct combination from the following given statements about chem...

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  20. The correct statements from the following about physical adsorption ...

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