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Assertion :- Oxidation state of Hydrogen...

Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`.
Reason :- `CaH_(2)` is a metal hydride and for metal hydrides, hydrogen is assigned the oxidation number of `-1`.

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are False.

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • Oxidation state of hydrogen in CaH_(2) is -

    A
    `+1`
    B
    `-1`
    C
    `+2`
    D
    0

  • Assertion : Oxidation state of hydrogen in H_2O is +1 . Reason : CaH_2 is metal hydride and for hydrides hydrogen is assigned the oxidation state of - 1.

    A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
    B
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
    C
    Assertion is correct statement but reason is wrong statement.
    D
    Assertion is wrong statement but reason is correct statement.

  • The oxidation state of hydrogen in binary metal hydrides is

    A
    -1
    B
    `+1`
    C
    0
    D
    none of these

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    (A) Oxidation state of 'H' is +1 in CuH_(2) and is -1 "in" CaH_(2) (R ) Ca is stronger electropositive than hydrogen.

    Statement Oxidation state of H is +1 in CuH_(2) and -1 in CaH_(2) Explanation Ca is strong electropositve metal.

    Assertion :- Fire in reaction between saline hydride and water can not be extinguished by CO_(2) . Reason :- CO_(2) gets reduced by metal hydride.

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