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Column – I

Column – II

A)

$O_{3} {+ H}_{2} O_{2}$

P)

Blue

B)

$O_{3} + starch KI$

Q)

Tailing

C)

$O_{3} + Hg$

R)

${HIO}_{3}$

D)

$O_{3} {+ I}_{2} {+ H}_{2} O$

S)

$O_{2} {+ H}_{2} O$

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A-S ,B-P, C-Q, D-R

A-R, B-P, C-Q, D-S

A-P, B-P ,C-Q, D-R

A-S ,B-R, C-P, D-Q

answer is A.

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