19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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)
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…
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 :
‘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?
Match the Column I with Column II and choose the correct option from the codes given below : Column I Column II A. SO2 B. NO2 C. CO 1. Binds with haemoglobin 2. Leads to stiffness of flower Buds 3. Irritant red haze i…
Match the Column I with Column II and choose the correct option from the codes given below : Column I Column II A. Gaseous air pollutants B. Particulate pollutants 1. CO2 2. Smoke 3. Smog 4. O3 Codes A B
Which of the following is/are the harmful effect(s) of UV radiation? I. It causes mutation in the cell II. UV radiation leads to ageing of skin III. It kills many phytoplankton IV. It causes global warming
Polar stratospheric cloud is formed over Antarctica during ..A.. Here, A refers to
In summer season, nitrogen dioxide and methane reacts with …A… and …B… atoms forming chlorine sinks. Here, A and B refer to
Chlorine sinks are formed during : I. Summer II. Winter
Ozone hole is found over :
The depletion of ozone hole was first reported in …I… over Antarctica. Here I refers to :
The depletion of ozone layer is known as I. ozone hole II. ozone centre III. ozone point