19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Phosphate fertilizers when added to water leads to
Eutrophication causes reduction in
BOD is connected with
Water is often treated with chlorine to
The type of pollution caused by spraying of DDT
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
SO2 gas is poisonous to:
Classical smog is a mixture of
The word smog stands for :
Which of the following interrelation with our surroundings are included in environmental studies?
Environmental chemistry deals with the study of the
A substance which cause pollution is known as
Pollutant can be found in the form of : I. Solid II. Liquid III. Gas The correct option(s) is/are
An average human being requires nearby…A… times more air than the food. Here, A refers to
Pollutants which are slowly degradable and remain in the environment in an unchanged for many decades, termed as :
Which of the following are the examples of non-bio- degradable pollutants? I. DDT II. Nuclear waste III. Plastic materials Select the correct options
Non-biodegradable pollutants are created by
Which of the following are major gaseous pollutants present in the troposphere? I. H2S II. Oxides of sulphur, nitrogen and carbon III. O3
What do you mean by Taj-Trapezium?
Which of the following is responsible for damaging Tajmahal and other monuments near Agra ?
The Taj Mahal in India is affected by pollutant:
Ozone layer absorbs mainly …A… Here, A refer to.
Acid rain is harmful for: I. Agriculture II. Aquatic ecosystem III. Buildings and other structures made of stone or metal. Select the correct option;