19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Green plants require CO2 for
Which of the following gases cause global warming ? I. CO2 II. O3 III. CO IV. Chlorofluorocarbons (a)I, II and III
In cold places flowers, vegetables and fruits are grown in glass covered areas called …A…here A refers to :
Atmospheric gases trap the sun’s heat near the earth’s surface and keep it warm. This is called …A… Here A refers to
Which of the following is/are the greenhouse gases?
Which of the following greenhouse gas is released in paddy field? I. CFCs II. CH4 III. SO2
Which of the following green gas is damaging the ozone layer?
Which of the following air pollutants is deposited as dry-deposition ?
Acid rain is harmful for: I. Agriculture II. Aquatic ecosystem III. Buildings and other structures made of stone or metal. Select the correct option;
The Taj Mahal in India is affected by pollutant:
Which of the following is responsible for damaging Tajmahal and other monuments near Agra ?
What do you mean by Taj-Trapezium?
Mist is produced by : I. Particles of spray liquids II. Condensation of vapour in air
Herbicides and insecticides are travel through air and form …A… Here A refers to:
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 protect us from the harmful UV-radiation coming from the sun? I. O2 II. O3 III. N2 IV. CO2
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 :