Home
Class 12
CHEMISTRY
Which of the following statement is not ...

Which of the following statement is not correct

A

Physical absorption is due to van der Waals forces.

B

Physical absorption is irreversible.

C

Chemical absorption increases with increase in temperature upto certain limit than decreases

D

Enthalpy of absorption `(|DeltaH|)` for a chemical absorption is greater than that of physical absorption

Text Solution

Verified by Experts

The correct Answer is:
B
Physical absorption is reversible in nature
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    DISHA PUBLICATION|Exercise Exercise-2 :Concept Applicator|30 Videos

  • SURFACE CHEMISTRY

    DISHA PUBLICATION|Exercise Exercise-2 :Concept Applicator|30 Videos

  • STRUCTURE OF ATOM

    DISHA PUBLICATION|Exercise Exercise|112 Videos

  • THE D- AND F- BLOCK ELEMENTS

    DISHA PUBLICATION|Exercise EXERCISE - 2 CONCEPT APPLICATOR|30 Videos
DISHA PUBLICATION-SURFACE CHEMISTRY-Exercise-1 : Concept Builder (TOPICEWISE)
  1. Which of the following statement is not correct

    Text Solution

    |

  2. The effect of pressure on adsorption is high if a. Temperature is lo...

    Text Solution

    |

  3. The heat evolved in chemisorption lies in the range (in kJ/mol) of :

    Text Solution

    |

  4. Blue colour of the sky is due to a. Adsorption of light by dust part...

    Text Solution

    |

  5. Which among the following statements is false ?

    Text Solution

    |

  6. In Langumir's model of adosrption of a gas on a solid surface :

    Text Solution

    |

  7. How many layers are adsorbed in chemical adsorption?

    Text Solution

    |

  8. Freundlich equation for adsorption of gases (in amount of Xg) on a sol...

    Text Solution

    |

  9. Which of the following statements is incorret about physisorption?

    Text Solution

    |

  10. The adsorption of gas on a solid surface varies with pressure of the g...

    Text Solution

    |

  11. Adsorption is the tendency of accumulation of molecular species at the...

    Text Solution

    |

  12. For adsorption of a gas on a solid, the plot of log (x//m) vs log P is...

    Text Solution

    |

  13. Which is adsorbed in maximum amount by activated charcoal?

    Text Solution

    |

  14. At high pressure, the entire surface gets covered by a monomolecular l...

    Text Solution

    |

  15. Adsorption is accompanied by :

    Text Solution

    |

  16. One gram of charcoal adsorbs 100 mL of 0.5 M CH(3)COOH to form a mono-...

    Text Solution

    |

  17. one gram of activated carbon has a surface are of 1000m^(2). Consideri...

    Text Solution

    |

  18. At 1 atm and 273 K the volume of nitrogen gas required to cover a samp...

    Text Solution

    |

  19. A sample of 16 g charcoal was brought into contact with CH(4) gas cont...

    Text Solution

    |

  20. What is shape - selective catalysis ?

    Text Solution

    |