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Assertion (A): Among the two O-H bonds i...

Assertion (A): Among the two O-H bonds in `H_(2)O` molecule, the energy required to break the first O-H bond and the other O-H bond is the same.
Reason (R) This is because the electronic environment around oxygen is the same even after brekage of one O-H bond.

A

A and R both are correct, and R is correct explanation of A.

B

A and R both are correct, but R is not the correct explanation of A.

C

A is true but R is false.

D

A and R both are false.

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The O-O-H bond angle in H_(2)O_(2) is:

Assertion (A): Though the central atom of both NH_(3) and H_(2)O molecules are sp_(3) hybridised, yet H – N – H bond angle is greater than that of H – O – H. Reason (R): This is because nitrogen atom has one lone pair and oxygen atom has two lone pairs.

Knowledge Check

  • The section contains Assertion and Reason type questions, Each question has 4 choices (1), (2),(3) and (4), out of which only one is correct. Assertion (A) Among the two O-H bonds in H_2O molecule, the energy required to break the first O-H bond and the other O-H bond is the same Reason (R ) This is because the electronic environment around oxygen undergoes some change after the breakage of one O-H bond.

    A
    Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion
    B
    Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion
    C
    Assertion is correct but Reason is incorrect
    D
    Both Assertion and Reason are incorrect

  • If -O-H bond is weadker than -O-D bond,

    A
    The biological growth of a plant which is fed by `D_(2)O` is flast
    B
    The biologicval growth of a plant which is fed by `H_(2)O` is fast
    C
    The biological growth of a plant which fed both by `H_(2)O` or `D_(2)O` are same
    D
    Water does not have any role in plant growth.

  • The H-O-H bond in water molecule is

    A
    `104^(@)31'`
    B
    `120^(@)`
    C
    `180^(@)`
    D
    `109^(@)28'`

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