Match the following :

Question

List-I                                                         List-II

(A) pH of unpolluted rain water                     (I) $H_2C = CH-CHO$

(B) Acid rain                                               (II) 5.6

(C) Acrolein                                               (III) $NO_2,CO_2$

(D) Freon                                                   (IV) $CF_2CI_2$

                                                                  (V) $CaOCI_2$

The correct answer is

             (A)        (B)        (C)         (D)

(1)        (II)        (I)         (III)          (IV)

(2)        (I)         (II)        (III)          (IV)

(3)       (III)        (II)         (IV)           (I)

(4)        (II)         (III)        (I)          (IV)