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Noble gases A, B, C, D, E are passed thr...

Noble gases A, B, C, D, E are passed through Dewar's flask at-`100^@C` A, C & E gases are adsorbed. Unadsorbed gases B, D are passed through another Dewar's flask at-`180^@C`. Gas B is adsorbed. The Dewar's flask al-`100^@C` is put in contact with another Dewars flask al-`193^@C`. The gas Eis diffused in it. Finally A & C are seperated by warming the flask from-`100^@C` w -`90^@C`. Ilere 'C' comes out
He and Ne gases respectively are

A

A,B

B

B, D

C

C, D

D

D, B

Text Solution

Verified by Experts

The correct Answer is:
A

`He, Ne underset("Deewars flask "-180^@C)overset("another")to`Ne is absorbed. He is unadsorbed, He has weak vander wall forces.
Charcoal - 1 contains Ar, Kr, Xe is cooled to `-180^@C`. At this temp. Ar. Gets liquified while Kr & Xe remain adsorbed.

(1) B, D `to ` He, Ne
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Knowledge Check

  • The ratio C_p//C_v for noble gases is

    A
    1.67
    B
    1.33
    C
    1.42
    D
    1.84

  • If a, b, c, d, e, f are in A.P then e-c=

    A
    `2(c-a)`
    B
    `2(d-c)`
    C
    `2(f-d)`
    D
    `d-c`

  • If r = alpha a + beta b + gamma c represents a plane passing through the points a, b, c then

    A
    `alpha = beta = gamma`
    B
    `alpha + beta + gamma = 0`
    C
    `alpha + beta + gamma = 1`
    D
    `alpha - beta = beta - gamma = gamma - alpha`

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