Question

2. The indicator of SO2 pollution of air is—
(A) Lichen
(B) Fern
(C) Black mould
(D) Moss

Answer 1

Answer:

Explanation:

The indicator is Lichen.

✔️Lichen are nothing but phattar phul.

✔️Lichens are used to make red,blue litmus papers

✔️Red litmus turns to blue if it is basic.

✔️Blue litmus turn to red if it is acidic.

Answer 2

$Hey Guys here is your answer$

Lichen

$The indicator of SO2 pollution$

$of air is Lichen$✏️✏️✏️✏️✏️

✍️✍️ please mark it brainlist answer..