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On treating a compound with warm dil. \(H _2 SO _4\), gas X is evolved which turns \(K _2 Cr _2 O _7\) paper acidified w…

Q1

On treating a compound with warm dil. \(H _2 SO _4\), gas X is evolved which turns \(K _2 Cr _2 O _7\) paper acidified with dil. \(H _2 SO _4\) to a green compound Y. X and Y respectively are:

[JEE Main 2021, 26 Feb (Shift 1)]

a

\(X = SO _2, Y = Cr _2\left( SO _4\right)_3\)

b

\(X = SO _2, Y = Cr _2 O _3\)

c

\(X = SO _3, Y = Cr _2 O _3\)

d

\(X = SO _3, Y = Cr _2\left( SO _4\right)_3\)

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