Which of the following statements is true about the Air Quality Index?

Which of the following statements is true about the Air Quality Index?

(a) It indicates the colour of the air.

(b) It predicts ozone levels in your area.

(c) It determines the intensity of sound and sound pollution.

(d) It estimates air pollution mainly sulphur content in the air.

Answer: (b) It predicts ozone levels in your area. Think of the AQI as a yardstick that runs from 0 to 500. The higher the AQI value, the greater the level of air pollution and the greater the health concern. For example, an AQI value of 50 or below represents good air quality, while an AQI value over 300 represents hazardous air quality. For each pollutant an AQI value of 100 generally corresponds to an ambient air concentration that equals the level of the short-term national ambient air quality standard for protection of public health. AQI values at or below 100 are generally thought of as satisfactory. When AQI values are above 100, air quality is unhealthy: at first for certain sensitive groups of people, then for everyone as AQI values get higher.

More Questions on Air Pollution

1. DDT and Aluminium cans are examples of ________.

2. How many different types of primary pollutants together contribute to about 90 per cent of the global air pollution?

3. Which of the following agents is mainly responsible for the secondary pollutants?

4. Smoke, fumes, ash, dust, nitric oxide and sulphur dioxide are the main sources of ________.

5. Which of the following industries plays a major role in polluting air and increasing air pollution?

6. Which of the following gas is more in percentage in the air?

7. Increased levels of air pollution results in _______.

8. The Taj Mahal, Lotus Temple, Golden Temple, India Gate and other famous heritage monuments are being affected by _______.

9. What is the total percentage of nitrogen gas in the air?

10. Which of the following gases are called Greenhouse gases?