1. pH of acid rain is Select one: 5-5.5 less than 5 more than 5.5 more than 6 2.

Question

1. pH of acid rain is

Select one:

5-5.5

less than 5

more than 5.5

more than 6

2. The threshold concentration of SO2 in any industrial activity should not be beyond

Select one:

5 ppm

2 ppm

4 ppm

3 ppm

3. which of the following is an example of Natural air pollution

Select one:

Acid rain

Volcanic eruptions

Factories

None

4. As altitude above the ground level increases the wind velocity during day time is ___________________than night time

Select one:

No relation

Less

Equal to

Greater

5. The gaseous Plume model is most accurate for downside distances between approximately

Select one:

<100 m

100 to 2000 m

>2000 m

At any distances

Explanation / Answer

1. less than 5 , for normal rain it is between 5-5.5 but for acid rain it is near to 4

2. 5 ppm,

3 Volcanic eruptions, Natural events that pollute the air include forest fires, volcanic eruptions, wind erosion, pollen dispersal, evaporation of organic compounds and natural radioactivity.

4 less than

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