Notifications
Clear all
0
29/01/2022 7:56 pm
Topic starter
Choose the incorrect statement.
(a) The Montreal protocol is associated with the control of emission of ozone depleting substances
(b) Methane and carbon dioxide are greenhouse gases
(c) Dobson units are used to measure oxygen content
(d) Use of incinerators is crucial to disposal of hospital wastes
1 Answer
0
29/01/2022 7:58 pm
Correct answer: (c) Dobson units are used to measure oxygen content
Explanation:
The thickness of ozone is measured in terms of Dobson Units (DU). In stratosphere ozone gas is continuously-formed by the action of ultra violet rays on molecular oxygen & also degraded into molecular oxygen.
O3 ⇌ O2 + [O]