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:

C and D

The correct answer is Option (2) -C and D

Greenhouse gases :Greenhouse gases are carbon dioxide, methane, nitrous oxide, ozone and fluorinated gases. These gases trap heat.

Montreal protocol: The Montreal protocol is a global agreement on protection of the ozone layer by regulating the emission of ozone-depleting substances.

Incinerators : Hospitals generate hazardous wastes that contain disinfectants and other harmful chemicals, and also pathogenic micro-organisms. Such wastes also require careful treatment and disposal. The use of incinerators is crucial to disposal of hospital waste.

Dobson units : The ozone is found in the upper part of the atmosphere called the stratosphere, and it acts as a shield absorbing ultraviolet radiation from the sun. UV rays are highly injurious to living organisms since DNA and proteins of living organisms preferentially absorb UV rays, and its high energy breaks the chemical bonds within these molecules. The thickness of the ozone in a column of air from the ground to the top of the atmosphere is measured in terms of Dobson units (DU).