Question

A mixture of salts (Na₂SO₃ + K₂Cr₂O₇) in a test tube is treated with dil. H₂SO₄ and resulting gas is passed through lime water. Which of the following observations is correct about this test? 

a) Solution in test tube becomes green and lime water turns milky 

b) Solution in test tube is colourless and lime-water turns milky 

c) Solution in test tube becomes green and lime water remains clear 

d) Solution in test tube remains clear and lime water also remains clear.

Answer 1

c) Solution in test tube becomes green and lime water remains clear