Home
Class 11
CHEMISTRY
Which of the following has the highest v...

Which of the following has the highest value of ë max in the ultraviolet-visible spectrum?

A

2

B

1

C

4

D

3

Text Solution

Verified by Experts

The correct Answer is:
B
A higher value of ëmax corresponds to a lower frequency of light and a smaller energy difference between energy levels in a molecule. Conjugation of the two bonds in the 1,3-diene results in a decrease in the gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) compared to an isolated alkene.
Promotional Banner

Topper's Solved these Questions

  • HYDROCARBONS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE SHEET ( LEVEL-II (LECTURE SHEET (ADVANCED) (MORE THAN ONE CORRECT ANSWER TYPE QUESTIONS)))|20 Videos

  • HYDROCARBONS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE SHEET ( LEVEL-II (LECTURE SHEET (ADVANCED) (LINKED COMPREHENSION TYPE QUESTIONS(PASSAGE-I))))|3 Videos

  • HYDROCARBONS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE - VI (LEVEL-II (MATRIX MATCHING TYPE QUESTIONS )))|4 Videos

  • GENERAL ORGANIC CHEMISTRY

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|35 Videos

  • HYDROGEN AND ITS COMPOUNDS

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|20 Videos

Similar Questions

Explore conceptually related problems

Which of the following has the highest pH value?

Which of the following has highest mass?

Which of the following has the highest first IP?

Which of the following has the ,highest dipole moment

Which one of the following has the highest size?

Which of the following have highest pk_(a) value

Which of the following has highest dipole moment?

Which of the following has highest dipole moment?

AAKASH SERIES-HYDROCARBONS-ADDITIONAL PRACTICE SHEET ( LEVEL-I (LECTURE SHEET (MAIN) (STRAIGHT OBJECTIVE TYPE QUESTIONS)))
  1. Which of the following is the repeat unit of polybutadiene?

    Text Solution

    |

  2. What is the major organic product obtained from the following reaction...

    Text Solution

    |

  3. Which of the following has the highest value of ë max in the ultraviol...

    Text Solution

    |

  4. Ethyl iodide and n-propyl iodide are allowed to under go wurtz reactio...

    Text Solution

    |

  5. CH3Cl to CH4 Above conversion can be achieved by :

    Text Solution

    |

  6. CH4 + Cl2 overset(hv)to CH3 Cl + HCl to obtain high yields of CH3Cl , ...

    Text Solution

    |

  7. Double bond equivalent of cubane is?

    Text Solution

    |

  8. How many bond cleavages are required to convert cubane into non-cyclic...

    Text Solution

    |

  9. Compare the heats of combustion of above compounds

    Text Solution

    |

  10. Following are the structures of four isomer of hexane. Among the names...

    Text Solution

    |

  11. Which of the fallowing describes the best relationship between the met...

    Text Solution

    |

  12. compare the stabilities of the fallowing two compounds (A) and( B) A...

    Text Solution

    |

  13. Which conformation of ethane has the lowest potential energy?

    Text Solution

    |

  14. Which one of the following alkene will react fastest with H2 under cat...

    Text Solution

    |

  15. Which of the fallowing has highest chlorine content?

    Text Solution

    |

  16. Text Solution

    |

  17. Text Solution

    |

  18. Above compound can be obtained by reaction :

    Text Solution

    |

  19. Product (P) is :

    Text Solution

    |

  20. Double bond equivalent (degree of Unsaturatuion) of (A) is:

    Text Solution

    |