19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The smog is essentially caused by the presence of : [Guj. CET 2004]
The basic components of the smog are (AMU 2005)
Use of chlorofluorocarbon is not encouraged because (KCET 2005)
The water pollutants mainly responsible for eutrophication are (Punjab PMET 2006)
Match the column I and column II and pick the correct matching from the codes given below. (Kerala CEE 2006) Column I Column II A. Peroxyacetyl nitrate 1. Waste incineration B. Polycylic aromatic 2. Global warming C…
The process of ‘eutrophication’ is due to the (Kerala CEE 2008)
The viable particulate stand for : I. Minute living organisms present in atmosphere II. Minute non-living particles present in atmosphere
What do you mean by Taj-Trapezium?
5L aqueous solution is kept in the presence of oxygen and suitable microorganism for five days at 20°C. If the O2 consumed is 0.2g, the BOD value of the sample is (EAMCET 2008)
Assertion (A): London smog is oxidising in nature. Reason (R): London smog contains O3, NO2 and hydrocarbons. (AIIMS2009)
UV radiations brings about (RPMT 2010)
Gas released during Bhopal Gas Tragedy was (RPMT 2010)
Which of the following is responsible for damaging Tajmahal and other monuments near Agra ?
Pollutant can be found in the form of : I. Solid II. Liquid III. Gas The correct option(s) is/are
Global warming can be controlled by : (CBSE-AIPMT 2010)
The Taj Mahal in India is affected by pollutant:
Greenhouse effect is caused by (JCECE2010)
Acid rain is harmful for: I. Agriculture II. Aquatic ecosystem III. Buildings and other structures made of stone or metal. Select the correct option;
Which of the following air pollutants is deposited as dry-deposition ?
The troposphere extends up to the height of A Km from the sea level. 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
There are concentric layers of air regions around earth and each layer has….A. Here, A refers to
Stratosphere lies above sea level between :
Which of the following atmosphere layer contains clouds, water vapour and air?