What is the main purpose of ambient air quality standards?
To set legally permissible limits for specific pollutants to protect public health.
The main purpose of ambient air quality standards is to set legally permissible limits for specific pollutants to protect public health. This involves establishing threshold levels for various pollutants in the air that, when exceeded, could harm human health, the environment, or both.
Let's analyze each of the options given to understand why the correct answer is the best choice:
- Option 1: To ensure air is routinely sampled to map historical pollution trends.
This option is incorrect because while sampling and mapping pollution trends are essential activities in monitoring and managing air quality, ambient air quality standards themselves are primarily focused on setting limits to control pollution levels rather than just sampling. - Option 2: To focus exclusively on industrial operations while ignoring other sectors.
This option is incorrect because air quality standards apply broadly to various pollution sources, not just industrial operations. These standards take into account multiple sectors and sources including vehicular emissions, residential areas, etc. - Option 3: To require all industries to reduce emissions by the exact same percentage.
This option is incorrect because air quality standards do not set uniform emission reduction percentages for all industries. The standards specify limits for pollutant levels, but the reduction strategies can differ based on several factors like the type of industry, location, and technological capabilities. - Option 4: To set legally permissible limits for specific pollutants to protect public health.
This option is correct. Ambient air quality standards are established to protect public health by defining acceptable concentration levels of pollutants in the air. These limits ensure that the air quality remains at a level that is not harmful to humans and the environment.
Conclusion: Based on the analysis, the correct answer is: To set legally permissible limits for specific pollutants to protect public health.
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Important Questions from Environment Education
Also refers to global warming
EVS is an integration of
Select an incorrect statement:
Persistence of vision in a human eye is
Given below are two Statements
Statement (I): Non formal education processes and programmes should, in the long run, lead to creating awareness, in individual and society of prevailing environmental solutions.
Statement (II): Non formal education is intended for all age groups and sections of society
In the light of the above statements check the most appropriate answer.
