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Q.

Statement (I) : When O3 is passed through mercury , mercury loses  its meniscus and sticks to the walls of the glass container

Statement (II) : Hg2O formed dissolves in Hg

 

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a

Both (I) & (II) are true

b

Both (I) & (II) are false

c

(I) is false & (II) is true

d

(I) is true & (II) is false

answer is A.

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Detailed Solution

When O3 is passed through mercury taken in a Capillary,Mercury loses its meniscus and sticks

to the walls  of the Capillary due to the formation of soluble mercury(I)oxide.

This is called Tailing of mercury.

On washing with water meniscus can be retained

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