Which color solution is formed when sulfur di | vedclass

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(A) When sulfur dioxide $(SO_2)$ gas is passed through an acidic potassium dichromate $(K_2Cr_2O_7)$ solution,it acts as a reducing agent. The orange-

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Green

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(A) When sulfur dioxide $(SO_2)$ gas is passed through an acidic potassium dichromate $(K_2Cr_2O_7)$ solution,it acts as a reducing agent. The orange-colored dichromate ion $(Cr_2O_7^{2-})$ is reduced to the green-colored chromium$(III)$ ion $(Cr^{3+})$. The chemical reaction is: $K_2Cr_2O_7 + 3SO_2 + H_2SO_4 \rightarrow K_2SO_4 + Cr_2(SO_4)_3 + H_2O$. Due to the formation of chromium$(III)$ sulfate,the solution turns green.

$X$	$Y$
$1.$ Dehydrating agent	$p.$ Sulphur dioxide gas
$2.$ In preparation of firecrackers	$q.$ Concentrated sulphuric acid
$3.$ Weak bleaching agent	$r.$ Dihydrogen gas
$4.$ Lightest gas	$s.$ Sulphur

Which color solution is formed when sulfur dioxide gas reduces an acidic potassium dichromate solution?

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