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Which one of the following statements is incorrect?

 

Option 1 -

Atomic hydrogen is produced when H2 molecules at a high temperature are irradiated with UV radiation.

Option 2 -

Bond dissociation enthalpy of H2 is highest among diatomic gaseous molecules which contain a single bond.

Option 3 -

Dihydrogen is produced on reacting zinc with HCl as well as NaOH(aq).

Option 4 -

At around 2000K, the dissociation of dihydrogen into its atoms is nearly 8.1%.

0 2 Views | Posted 2 months ago
Asked by Shiksha User

  • 1 Answer

  • V

    Answered by

    Vishal Baghel | Contributor-Level 10

    2 months ago
    Correct Option - 4


    Detailed Solution:

    H 2 ? h v h i g h ? ? T 2 H

    Zn + 2HCl -> ZnCl2 + H2

    N a O H ( a q ) + Z n ? N a 2 Z n O 2 + H 2        

    H 2 ? 2 0 0 0 K 2 H    

    It is nearly 0.081%.

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