19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The troposphere extends up to the height of A Km from the sea level. Here A refers to.
There are concentric layers of air regions around earth and each layer has….A. Here, A refers to
Match the Column I with Column II and choose the correct option from the codes given below: Column I Column II A. Biodegradable pollutant(s) B. Non-Biodegradable pollutant(s) 1. Nuclear wastes 2. Plastic 3. Discard…
Non-biodegradable pollutants are created by
Which of the following are the examples of non-bio- degradable pollutants? I. DDT II. Nuclear waste III. Plastic materials Select the correct options
Pollutants which are slowly degradable and remain in the environment in an unchanged for many decades, termed as :
An average human being requires nearby…A… times more air than the food. Here, A refers to
Pollutant can be found in the form of : I. Solid II. Liquid III. Gas The correct option(s) is/are
A substance which cause pollution is known as
Environmental chemistry deals with the study of the
Which of the following interrelation with our surroundings are included in environmental studies?
Stratosphere lies above sea level between :
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 :
Acid rain is harmful for: I. Agriculture II. Aquatic ecosystem III. Buildings and other structures made of stone or metal. Select the correct option;
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 also knows as:
CFCs are used in refrigerators, air conditioners because: