Chemistry Question Bank

The effect of particulate pollutants are largely dependent on the …A… Here, A refers to.

Which of the following is the major particulate matter emitted by vehicles.

The word smog stands for :

Classical smog is a mixture of

Classical smog is also called …A…smog. Here A refers to

Photochemical smog has …I… concentration of oxidising agents and is therefore, called as …II… smog. Here, I and II refer to :

Which of the following options represents the PAN?

Which of the following are involved in the formation of PAN? I. NO2 II. O3 III. Unburnt hydrocarbon IV. CO2

Which of the following is/are common components of photochemical smog?

Which of the following components of photochemical smog act as powerful eye irritiants? I. O3 II. PAN III. Hydrocarbon

Which of the following is/are the primary precursor(s) of the photochemical smog?

Catalytic converters are used to control…A… Here, A refers to.

Point out the plants which are most effective for controlling of photochemical smog ?

Which of the following protect us from the harmful UV-radiation coming from the sun? I. O2 II. O3 III. N2 IV. CO2

The disease caused by UV radiation(s) in human is/are: I. Melanoma (skin cancer) II. Heart attack III. Hypertension IV. Cough cold

Which of the following reaction(s) is/are happen during the formation of O3 layer in stratosphere ? (a) UV O (g) O(g)+O(g) -> (b) UV O(g)+O (g) (g)O (g) (c) UV O (g) O2(g)+O(g)

Thermodynamically ozone is :

How do CFCs cause thinning of ozone layer in stratosphere ?

The main reason of ozone layer depletion is : I. release of CFCs II. release of CO2 III. release of CH4

CFCs are used in refrigerators, air conditioners because:

CFCs deplete the ozone layer because

The depletion of ozone layer is known as I. ozone hole II. ozone centre III. ozone point

The depletion of ozone hole was first reported in …I… over Antarctica. Here I refers to :

Ozone hole is found over :

Chlorine sinks are formed during : I. Summer II. Winter