Montreal protocol was signed in order to address which of the following environmental issues?
Depletion of ozone in the stratosphere
The Montreal Protocol (1987) is an international treaty framed to protect a specific atmospheric shield, so we must match it to the environmental problem it targets.
The stratospheric ozone layer absorbs harmful ultraviolet radiation. Man-made chemicals such as chlorofluorocarbons (CFCs), halons and other ozone-depleting substances were breaking down this layer, creating the "ozone hole".
The Montreal Protocol committed nations to phase out these ozone-depleting substances, so its direct purpose was to stop the thinning of the ozone shield.
Tropospheric (ground-level) ozone pollution, global warming and acid rain are separate issues addressed by other agreements (for example, global warming is tackled by the Kyoto Protocol and Paris Agreement).
Hence, the answer is Depletion of ozone in the stratosphere.
Similar Questions
Which of the following substances has the least Ozone Depleting Potential?
Assertion (A): High concentration of ozone in the lower troposphere is desirable.
Reason (R): Ozone present in the atmosphere protects the living organisms on the surface of earth from the harmful ultra-violet radiation of the sun.
Choose the correct answer from the options given below:Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Despite the fact that Chloro Fluoro Carbons(CFCs) are evenly distributed over the globe, the Ozone depletion is significantly pronounced over the south pole.
Reason R: The presence of ice crystals over the south pole makes chlorine to oxygen bonding tougher.
In the light of the above statements, choose the most appropriate answer from the options given below.
Important Questions from Ozone Layer Depletion
- Which of the following is a catalytically inactive (or reservoir) molecule containing chlorine in stratosphere?
- Choose the correct statement(s)
A. O$_3$ in stratosphere is not completely effective in shielding us from UV-B
B. UV-A is biologically least harmful.
C. Chapman mechanism deals with only O$_3$ formation in stratosphere.
D. Sunscreen lotions either reflect or absorb or scatter UV-B and UV-A
E. UV-B helps in dissociation of O$_3$ molecule in stratosphere.
Choose the correct answer from the options given below. Ozone layer depletion is a major phenomenon in :
- With regard to ozone depletion over Antarctica, select the false statement :
- Atmospheric life times of CFCs is typically in the range :
