2020
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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10
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15
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20
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25
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Detailed explanation-1: -The AQI considers eight pollutants for which short-term (up to 24-hourly averaging period) standards are prescribed, however, AQI can be calculated if monitoring data are available for minimum three pollutants of which one should necessarily be PM 2.5 or PM 10 .
Detailed explanation-2: -One of the mandates of CPCB is to collect, collate and disseminate technical and statistical data relating to water pollution. Hence, Water Quality Monitoring (WQM) and Surveillance are of utmost importance.
Detailed explanation-3: -Out of 12 notified parameters, AQI was calculated for 03 parameters (PM10, SO2 and NO2) monitored under NAMP in central zone. The calculated values were categorized in 06 pollution categories (Good, Satisfactory, Moderate, Poor, Very Poor & Severe) reported in AQI document.
Detailed explanation-4: -Monitoring networkUpdated On : 21 Sep 2022 The monitoring of pollutants is carried out for 24 hours (4-hourly sampling for gaseous pollutants and 8-hourly sampling for particulate matter) with a frequency of twice a week, to have 104 observations in a year.