Which of the following statement is/are true?
I. Silver articles become black after some time when exposed to air.
II. Copper reacts with moist carbon dioxide in the air and gains a green coat.
1
Neither I nor II
2
Only II
3
Only I
4
Both I and II
Which of the following statement is/are true?
I. Silver articles become black after some time when exposed to air.
II. Copper reacts with moist carbon dioxide in the air and gains a green coat.