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Q.

In the tailing of mercury ozone oxidizes X to Y. X and Y are respectively

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a

Hg,Hg(I)O

b

Hg,Hg(II)O

c

Hg(I)O,Hg(II)O

d

Hg(II)O,Hg(I)O

answer is A.

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Detailed Solution

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Mercury with ozone due to which mercury loses its meniscus and it starts sticking to the walls of the thermometer due to the formation of the mercurous oxide.
The reaction is as follows:
2Hg+O3​→Hg2​O+O2​

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