Question
Match List I with List II.
| List-I (Anion) |
List-II (gas evolved on reaction with dil.H$_2$SO$_2$) |
||
|---|---|---|---|
| (A) | CO${_3^{2 - }}$ | I. | Colourless gas which turns lead acetate paper black. |
| (B) | S$^{2 - }$ | II. | Colourless gas which turns acidified potassium dichromate solution green. |
| (C) | SO${_3^{2 - }}$ | III. | Brown fumes which turns acidified KI solution containing starch blue. |
| (D) | NO${_2^ - }$ | IV. | Colourless gas evolved with brisk effervescence, which turns lime water milky. |
Choose the correct answer from the options given below :