A catalyst

A

changes the equilibrium constant

B

lowers the activation energy

C

increases the forward and backward reactions at different speeds

D

follows same mechanism for the reaction

Text Solution

Verified by Experts

The correct Answer is:
B
A substance which increases the speed of a reaction without being consumed in the reaction is called a catalyst. Catalyst reduces the height of barrier by providing an alternative path for the reaction and lowers the activation energy.
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2006

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

  • AIIMS 2008

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

Similar Questions

Explore conceptually related problems

The temperature at which the catalystic activity of the catalysts is maximum ,is called

Theory OF catalyst||Characteristics OF catalyst||Enzymes||Charactersitics OF enzymes

(A) Positive catalyst increases the rate of reaction (R) Catalyst decrease the value of DeltaG^(@)

Wilkinson's catalyst used as a homogenous catalyst In the hydrogenation of alkene contains-

Wilkinson's catalyst is used as a homogeneous hydrogenation catalyst for the conversion of alkenes to alkanes. It is a complex of

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2007-CHEMISTRY
  1. Chain transfer reagent is:

    Text Solution

    |

  2. Among the following components of cement which is present in highest a...

    Text Solution

    |

  3. A catalyst

    Text Solution

    |

  4. Which of the following does not contain a coordinate bond?

    Text Solution

    |

  5. Which of the following species participate in sulphonation of benzene ...

    Text Solution

    |

  6. Which of the following statement is true ?

    Text Solution

    |

  7. Delta S("surr") for an exothermic reaction is

    Text Solution

    |

  8. The vapour pressure of pure benzene at a certain temperature is 0.850 ...

    Text Solution

    |

  9. Which of the following is optically inactive ?

    Text Solution

    |

  10. Which statement is true for ferrocene ?

    Text Solution

    |

  11. Assertion : Copper sulphate solution is not stored in zinc vessel. ...

    Text Solution

    |

  12. Assertion : Benzene diazonium salt on boiling with water forms phenol....

    Text Solution

    |

  13. Assertion : trans-butene on reaction with bromine forms recemic mixtur...

    Text Solution

    |

  14. Assertion : Ozone is an allotrope of oxygen. Reason : Oxygen is blui...

    Text Solution

    |

  15. Assertion (A) : SnI4 is an orange solid . Reason (R) : The colour ...

    Text Solution

    |

  16. Assertion: Acetamide has more polargt C = 0 group than ethyl acetoacet...

    Text Solution

    |

  17. Assertion : Magnetic moment of Dy is the highest among langthanoids. ...

    Text Solution

    |

  18. Assertion : C - O bond in metal carbonyl is long. Reason : There is ...

    Text Solution

    |

  19. Assertion : Chloral reacts with phenyl chloride to form DDT. Reason ...

    Text Solution

    |

  20. Assertion : Mixture of CH(3)COOH and CH(3)COONH(4) is an example of ac...

    Text Solution

    |