19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Greenhouse effect is caused by (JCECE2010)
Global warming can be controlled by : (CBSE-AIPMT 2010)
Gas released during Bhopal Gas Tragedy was (RPMT 2010)
UV radiations brings about (RPMT 2010)
Pollution is (MHT CET 2010)
The chemical entities present in thermosphere of the atmosphere (EAMCET 2009) (a)O2 +, O+, NO+
DDT residues are rapidly passed through food chain causing biomagnification because DDT is (AIPMT 2009)
Antidote for carbon monoxide is/are (CG PMT, Haryana PMT 2009)
Photochemical smog is caused due to the presence of (Kerala CEE2009)
Assertion (A): London smog is oxidising in nature. Reason (R): London smog contains O3, NO2 and hydrocarbons. (AIIMS2009)
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)
The process of ‘eutrophication’ is due to the (Kerala CEE 2008)
Freon gas causing stratospheric ozone depletion is mainly released from : (WB CET 2008)
Green chemistry means such reactions which : (AIPMT 2008)
Which one of the following compounds helps in achieving equilibrium between O2 and CO2 in atmosphere? (EAMCET 2008)
The brown haze of photochemical smog is largely attributable to (Punjab PMET 2007)
Which of the following is secondary pollutant? (Manipal 2007)
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 water pollutants mainly responsible for eutrophication are (Punjab PMET 2006)
Use of chlorofluorocarbon is not encouraged because (KCET 2005)
The basic components of the smog are (AMU 2005)
The smog is essentially caused by the presence of : [Guj. CET 2004]
Nitrogen oxides produced from the presence of (KET 2004)
Biological Oxygen Demand (BOD) is a measure of (AIIMS 2003)
When rain is accompanied by a thunderstorm, the collected rain water will have a pH value (AIEEE 2003)