CURRENT AFFAIRS

2018

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If the Air Quality Index (AQI) ranges 171, what level does it indicate?
A
Moderate
B
Poor
C
Very poor
D
Hazardous
Explanation: 

Detailed explanation-1: -Moderately polluted (101–200) - May cause breathing difficulties in people with lung disease like asthma, and discomfort to people with heart disease, children and older adults. Very Poor (301–400) - May cause respiratory illness in people on prolonged exposure.

Detailed explanation-2: -AQI values at and below 100 are generally considered to be satisfactory. When AQI values are above 100, air quality is considered to be unhealthy, at first for members of populations at greatest risk of a health effect, then for the entire population as AQI values get higher (greater than 150).

Detailed explanation-3: -The six criteria air pollutants regulated by the EPA include particulate pollution, ground-level ozone, lead, carbon monoxide, nitrogen oxides and sulfur oxides.

Detailed explanation-4: -“Today’s Air Quality Index is 105, which is unhealthy for sensitive groups.”

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