19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
CFCs also knows as:
The main reason of ozone layer depletion is : I. release of CFCs II. release of CO2 III. release of CH4
How do CFCs cause thinning of ozone layer in stratosphere ?
Thermodynamically ozone is :
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)
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 protect us from the harmful UV-radiation coming from the sun? I. O2 II. O3 III. N2 IV. CO2
Point out the plants which are most effective for controlling of photochemical smog ?
Catalytic converters are used to control…A… Here, A refers to.
Which of the following is/are the primary precursor(s) of the 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 common components of photochemical smog?
Which of the following are involved in the formation of PAN? I. NO2 II. O3 III. Unburnt hydrocarbon IV. CO2
Which of the following options represents the PAN?
Photochemical smog has …I… concentration of oxidising agents and is therefore, called as …II… smog. Here, I and II refer to :
Classical smog is also called …A…smog. Here A refers to
Classical smog is a mixture of
The word smog stands for :
Which of the following is the major particulate matter emitted by vehicles.
The effect of particulate pollutants are largely dependent on the …A… Here, A refers to.
Herbicides and insecticides are travel through air and form …A… Here A refers to:
Mist is produced by : I. Particles of spray liquids II. Condensation of vapour in air
Non-viable particulates are classified on the basis of :
Which of the following is not a viable particulates :
The viable particulate stand for : I. Minute living organisms present in atmosphere II. Minute non-living particles present in atmosphere