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Pure and dry Air is passed over soda lim...

Pure and dry Air is passed over soda lime and potash solution and then through a long tube containing red hot copper. The remaining air is passed over heated magnesium ribbon
Which of the following are removed when air is passed through soda lime and potash

A

`O_2`

B

`N_2`

C

`CO_2`

D

`CO_2` and water vapour

Text Solution

Verified by Experts

The correct Answer is:
C
`2Cu + O_2 to 2CuO`
`3Mg + N_2 to Mg_3 N_2`
for complete removal of `O_2 and N_2` the air obtaned after removal of `CO_2 and H_2O` is repeatedly passed over heated Cu and Mg.
`C + O_2 to CO_2`
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Knowledge Check

  • Which one of the following halogens liberates oxygen, when passed through hot concentrated KOH solution?

    A
    `I_(2)`
    B
    `Cl_(2)`
    C
    `Br_(2)`
    D
    `F_(2)`

  • Which one of the following halogens liberates oxygen, when passed through hot concentrated KOH solution?

    A
    `I_(2)`
    B
    `Cl_(2)`
    C
    `Br_(2)`
    D
    `F_(2)`

  • A Current of dry air was first passed through the bulb containing solution of 'A' in water and then through the bulb containing pure water. The loss in mass of a solution bulb is 1.92g gm. Where as that in pure water bulb is 0.08g, then mole fraction of 'A' is.

    A
    0.86
    B
    0.2
    C
    0.96
    D
    0.04

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