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NaOH gives disproportionation reaction w...

`NaOH` gives disproportionation reaction with

A

`S`

B

`CO_(2)`

C

`SO_(2)`

D

`SO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
`4S+6NaOH overset(Delta)(rarr) Na_(2)S_(2)O_(3)+underset("with excess pentasulfide forms")(2Na_(2)S+3H_(2)O)`
`Na_(2)S+4S rarr Na_(2)S_(5)`
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The species given below that does NOT show disproportionation reaction is :

Assertion : 2, 2- Dimethylpropanal undergoes Cannizzaro reaction with cone. NaOH Reason : Cannizzaro reaction is a disproportionation reaction

Which of the following reactions are disproportionation reaction ?

Knowledge Check

  • Mark the halogen that does not give disproportionation reaction with alkalies

    A
    Iodine
    B
    Chlorine
    C
    Fluorine
    D
    Bromine

  • Assertion : 2, 2- Dimethylpropanal undergoes Cannizzaro reaction with cone. NaOH Reason : Cannizzaro reaction is a disproportionation reaction

    A
    If Both assertion and reason are true reason is a true explation of the assertion.
    B
    If Both assertion and reason are true but the reason is not the correct explation of the assertion.
    C
    If assertion is true but reason is false.
    D
    If assertion is false but reason is true.

  • Assertion: 2,2-Dimethylpropanal gives Cannizzaro reaction with concentrated NaOH. Reason: Cannizzaro is a disproportionation reaction.

    A
    if both assertion and reson are true, and reason is the true explanation of the assertion.
    B
    If both assertion and reason are true, but reason is not the true explanation of the assertion.
    C
    if assertion is true, but reason is false.
    D
    If both assertion and reason are false.