19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Catalytic converters are used to control…A… Here, A refers to.
Point out the plants which are most effective for controlling of photochemical smog ?
Which of the following protect us from the harmful UV-radiation coming from the sun? I. O2 II. O3 III. N2 IV. CO2
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 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)
Thermodynamically ozone is :
‘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 …
How do CFCs cause thinning of ozone layer in stratosphere ?
The main reason of ozone layer depletion is : I. release of CFCs II. release of CO2 III. release of CH4
CO emitted automobiles prevents O2-transport to body tissues by:
CFCs also knows as:
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…
CFCs are used in refrigerators, air conditioners because:
CFCs deplete the ozone layer because
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
The depletion of ozone layer is known as I. ozone hole II. ozone centre III. ozone point
The depletion of ozone hole was first reported in …I… over Antarctica. Here I refers to :
Which of the following belongs to secondary air pollutants?
Ozone hole is found over :
Chlorine sinks are formed during : I. Summer II. Winter
In summer season, nitrogen dioxide and methane reacts with …A… and …B… atoms forming chlorine sinks. Here, A and B refer to
Polar stratospheric cloud is formed over Antarctica during ..A.. Here, A refers to
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
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