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A compound on treatment with dil.H2SO4 ,...

A compound on treatment with dil.`H_2SO_4` , evolve gas [X]. Gas [X] turns filter paper dipped in acidified `K_2Cr_2O_7` from orange to green, due to formation of [Y]. select correct option:

A

[X] = `SO_2` , [Y] = `Cr_2O_3`

B

[X] = `SO_3` , [Y] = `Cr_2(SO_4)_3`

C

[X] = `SO_2` , [Y] = `Cr_2(SO_4)_3`

D

[X] = `SO_3` , [Y] = `Cr_2O_3`

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