19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Biological Oxygen Demand (BOD) is a measure of (AIIMS 2003)
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 :
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
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 are involved in the formation of PAN? I. NO2 II. O3 III. Unburnt hydrocarbon IV. CO2
Which of the following options represents the PAN?
Photochemical smog has …I… concentration of oxidising agents and is therefore, called as …II… smog. Here, I and II refer to :
Classical smog is also called …A…smog. Here A refers to
Classical smog is a mixture of
The word smog stands for :
What do you mean by Taj-Trapezium?
Which of the following is responsible for damaging Tajmahal and other monuments near Agra ?
The Taj Mahal in India is affected by pollutant:
Acid rain is harmful for: I. Agriculture II. Aquatic ecosystem III. Buildings and other structures made of stone or metal. Select the correct option;