Match List I with List II , (Anion) A. CO3 ^2-, I. Colourless gas which turns lead acetate paper black

Question

Match List I with List II

List I (Anion)	List II (Gas evolved on reaction with dil. H2SO4)
A. CO32-	I. Colourless gas which turns lead acetate paper black
B. S2-	II. Colourless gas which turns acidified potassium dichromate solution green.
C.SO32-	III. Brown fumes which turns acidified KI solution containing starch blue.
D. NO2-	IV. Colourless gas evolved with brisk effervescence, which turns lime water milky.

Choose the correct answer from the options given below: 

(A) A-III, B-I, C-II, D-IV 

(B) A-II, B-I, C-IV, D-III 

(C) A-IV, B-I, C-III, D-II 

(D) A-IV, B-I, C-II, D-III

Answer 1

Correct option is (D) A-IV, B-I, C-II, D-III

CO₃ ^2- will give CO₂(g) which will turns lime water milky. 

S^2- will give H₂S (g), will turns lead acetate paper black 

SO₃ ^2- will give SO2 (g), which will turns acidified potassium dichromate solution green.

 NO₂^- – will give brown NO₂(g) will turn KI solution blue.