19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following statement is incorrect about particulate pollutant?
Photochemical smog is caused by light mediated reaction between:
Which of the following statement(s) is/are incorrect regarding photochemical smog ?
Which of the following statement(s) is/are true? I. Carbon monoxide is a secondary air pollutant II. SO2 causes brown air effect during traffic congestion in cities. III. DDT is a non-biodegradable pollutant.
Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because.
Which of the following statement(s) is//are true about carbon monoxide?
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
CFCs deplete the ozone layer because
CFCs are used in refrigerators, air conditioners because:
CFCs also knows as:
The main reason of ozone layer depletion is : I. release of CFCs II. release of CO2 III. release of CH4
How do CFCs cause thinning of ozone layer in stratosphere ?
Thermodynamically ozone is :
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…
Which of the following is secondary pollutant? (Manipal 2007)
The brown haze of photochemical smog is largely attributable to (Punjab PMET 2007)