Select the incorrect statements given below.
A. Methane and Carbon dioxide are green house gases.
B. The Montreal Protocol is associated with the control of emission of ozone depleting substances.
C. Use of incinerators is not crucial to dispose off hospital wastes.
D. Dobson units is used to measure water quality.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → C and D
A. Methane and Carbon dioxide are green house gases. — True. Both hold back the heat radiated from the earth and add to global warming.
B. The Montreal Protocol is associated with the control of emission of ozone depleting substances. — True. It was signed in Montreal in 1987 to control ozone-depleting substances such as CFCs.
C. (Incinerators and hospital wastes) — False. Hospital wastes contain disinfectants and pathogens and need careful treatment in incinerators.
D. Dobson units is used to measure water quality. — False. The Dobson unit measures the thickness of the ozone layer; water quality is judged by measures such as BOD.