19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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.
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 :
Which of the following reaction(s) is/are happen during the formation of O3 layer in stratosphere ? (a) UV O (g) O(g)+O(g) -> (b) UV O(g)+O (g) (g)O (g) (c) UV O (g) O2(g)+O(g)
The disease caused by UV radiation(s) in human is/are: I. Melanoma (skin cancer) II. Heart attack III. Hypertension IV. Cough cold
Which of the following protect us from the harmful UV-radiation coming from the sun? I. O2 II. O3 III. N2 IV. CO2
Point out the plants which are most effective for controlling of photochemical smog ?
Catalytic converters are used to control…A… Here, A refers to.
Which of the following is/are the primary precursor(s) of the photochemical smog?
Which of the following components of photochemical smog act as powerful eye irritiants? I. O3 II. PAN III. Hydrocarbon