19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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)
Which one of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere? (AIPMT 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)
Greenhouse effect is caused by: (AIPMT 2002, AFMC 2002)
Phosphate pollution is brought about by (AIPMT 1997)
…A… of pollution are those where a source of pollution cannot be identified. Here, A refers to :
Which of the following is most essential for life?
‘Good ozone’ is found in the
Match the Column I with the Column II and choose the correct option from the codes given below. Column I Column II A. Nuclear power plant B. Burning of fossil fuel C. Solar energy 1. Radioactive wastes 2. Release of …
CO emitted automobiles prevents O2-transport to body tissues by:
Match the terms given in Column I with the compounds given in Column II and choose the correct option from the codes given below. Column I Column II A. Acid rain B. Photochemical smog C. Combination with haemoglobin…
Match the Column I with the Column II and choose the correct option from cods given below : Column I Column II A. Normal B. Acid rain 1. H2CO3 2. HNO3 3. HCl 4. H2SO4 Codes : A B
Which of the following belongs to secondary air pollutants?
The consequence of global warming may be… I. Increase in average temperature of the earth II. Melting of Himalayan Glaciers III. Increased biochemical oxygen demand. IV. Eutrophication
Bad ozone is found in the :
Photochemical smog does not contain: