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Aluminium becomes passive in...

Aluminium becomes passive in

A

Conc. `HNO_(3)`

B

`H_(2)CrO_(4)`

C

`HClO_(4)`

D

All

Text Solution

Verified by Experts

The correct Answer is:
D
`N//A`
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Name one metal which becomes passive in conc. HNO_(3) .

Concentrated nitric acid renders aluminium passive. Give reasons.

Knowledge Check

  • When dipped in conc. HNO_3 , metals like iron, chromium, nickel, aluminium, base become passive. This is due to

    A
    reduction of metals
    B
    formation of corresponding nitrates
    C
    evolution of nitrogen dioxide
    D
    formation of layer of metal oxide on the surface of metal

  • Metal which become passive with conc. HNO_(3)

    A
    `Cr`
    B
    Zn
    C
    Al
    D
    Both (1) & (3)

  • Which of the following metals become passive when dropped into conc. HNO_3 ?

    A
    Cu
    B
    Fe
    C
    Cr
    D
    Al

    • Similar Questions

    Explore conceptually related problems

    Concentrated nitric acid renders aluminium passive. Give reasons.

    Both Be and Al become passive on reaction with conc. nitric acid due to-

    Assertion (A) : Aluminum is passive towares conc HNO_2 Reason (R) : Due to formation of layer of nitrate on aluminium

    In the given experiment, some sea water was heated in a beaker. After some time, it was observed that the number of water droplets formed on the aluminium sheet become less and less. Why was this so? (i) The aluminium sheet had become hotter (ii) The rate of condensation had decreased (iii) Beaker X had become hotter

    Iron becomes passive by______due to formation of ______.

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