Q13. Under the Revised National Ambient Air pollution Standards 2009, the pollutants are
1. Methane 2. Benzene
3. Benzopyrene 4. Ozone
Select the correct answer using the codes given.

(a) Only 1 and 2

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(b) Only 2

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(d) All of the above

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Solution

The correct option is C (c) Only 2, 3 and 4
Revised National Ambient Air Quality Standards 2009 released by the Ministry of Environment and Forests. As per these norms, the residential & industrial areas will have the same standards. Includes limits for benzene, ozone, benzopyrene, arsenic, nickel and ammonia not covered in 1994.

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