Home
Class 12
CHEMISTRY
Assertion : Physical adsorption on the s...

Assertion : Physical adsorption on the surface of sadsorbent equires appreciable activation energy
Reason : Because bonds of the adsorbate molecules are to break.

A

If both assertion and reason are correct and reason is correct explanation for assertion.

B

If both assertion and reason are correct but reason is not correct explanation for assertion.

C

If assertion is correct but reason is incorrect.

D

If assertion and reason both are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
D
Correct assertion. Physical adsorption on the surface of adsorbent requires negligible appreciable activation energy
Correct reason. No breaking of bonds in the molecules of adsorbate is involved.
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    DINESH PUBLICATION|Exercise BRAIN STORMING MULTIPLE CHOICE QUESTIONS (MCQs)|8 Videos

  • SURFACE CHEMISTRY

    DINESH PUBLICATION|Exercise MULTIPLE CORRECT OPTIONS TYPE MCWs|15 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    DINESH PUBLICATION|Exercise ULTIMATE PREPARATORY PACKAGE|20 Videos

  • THE CARBON FAMILY

    DINESH PUBLICATION|Exercise Ultimate|11 Videos

Similar Questions

Explore conceptually related problems

Assertion(A): Physical adsorption of milecules on the surface requires activation energy. Reason(R): Because the bonds of adsorbed molecules are broken.

Assertion : Physical adsorption of molecules on the surface requires activation energy. Reason : Heat of adsorption is –ve.

In physical adsorption, the molecules of adsorbate are held by chemical forces.

Assertion: Physical absorption of molecular takes place on surface only. Reason: In this process, the bonds of the absorbed molecules are not broken.

Assertion :- Physical adsorption forms multimolecular layer. Reason :- It contains covalent bond.

Assertion : Physical adsorption is reversible. Reason : Chemical adsorption is alos reversible.

Assertion: Physisorption of molecules occures on surface only. Reason: in this process, the bonds of the adsorbed molecules are broken.

Assertion : Enzymes lower the activation energy. Reason : A substrate molecule can be acted upon by a particular enzyme.

DINESH PUBLICATION-SURFACE CHEMISTRY -ASSERTIN-REASON TYPE QUESTIONS
  1. Assertion : A colloidal sol of Al(OH)(3) is more readly coagulated by ...

    Text Solution

    |

  2. Assertion : A sol of As(2)S(3) prepared by the action of H(2)S on As(2...

    Text Solution

    |

  3. Assertion : Physical adsorption on the surface of sadsorbent equires a...

    Text Solution

    |

  4. Assertion : Aqueous gold colloidal sol is red in colour. Reason : Th...

    Text Solution

    |

  5. Assertion : Fe^(3+) ions can be used for the coagulation of As(2)S(3) ...

    Text Solution

    |

  6. Assertion : In the presenced of promote, the activity on the surface o...

    Text Solution

    |

  7. Assertion : A colloidal sol. Of Fe(OH)(3) formed by peptisation carrie...

    Text Solution

    |

  8. Assertion : Proteins, starch and rubber are lyophilic coloids. Rea...

    Text Solution

    |

  9. Assertion : Lyophilic colloids such as starch, gelatin etc, act as pro...

    Text Solution

    |

  10. Assertion : The micelle formed by sodium stereate in water has -COO^(-...

    Text Solution

    |

  11. Assertion : Sulphide ores are concentrated by forth flotation process....

    Text Solution

    |

  12. Assertion : Colloidal solutions are electrically netural Reason : Di...

    Text Solution

    |

  13. Assertion : During adsorption, DeltaG, DeltaH and DeltaS decrease i.e....

    Text Solution

    |

  14. Assertion : Al^(3+) ions have greater precipitating power for As(2)S(3...

    Text Solution

    |

  15. Assertion : Oxidation of Na(2)SO(3) is not caused by air but in the pr...

    Text Solution

    |

  16. Assertion : A catalyst lowers the threshold energy level for a react...

    Text Solution

    |

  17. Assertion : Gelatin is often used as a protective colloid. Reason : ...

    Text Solution

    |

  18. Assertion : The concentration of sulphide ore by froth floatation proc...

    Text Solution

    |

  19. Assertion : Physical adsorption is reversible. Reason : Chemical ads...

    Text Solution

    |

  20. Assertion : Fe(OH)(3) and As(2)S(3) colloidal sols on micing fro preci...

    Text Solution

    |