19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Eutrophication is due to (AMU 2011) (a) SO ion present in water
Photochemical smog is caused by light mediated reaction between : (AIPMT 2012)
Which one of the following statements regarding photochemical smog is not correct? (CBSE, AIPMT 2012)
BOD stands for (AMU 2012)
Assertion (A): CO and NO combine with haemoglobin. Reason (R): Both have equal affinity for haemoglobin. (AIIMS 2012)
Which forms the part of hazy fumes of photochemical smog
The statement which is not true
Assertion: (A) London smog is produced when carbon soot particles combine with gaseous oxides of sulphur. Reason: Presence of carbon particles and SO2 makes it reducing in nature. (AIIMS 2017)
Which of the following is a sink for CO? (NEET 2017)
The substance which is a primary pollutant?
Match list-I with list-II (NEET 2021) List – I List – II (a) 2SO g O g 2SO g -> (i) Acid rain (b) hv HOCl g OH Cl -> (ii) Smog (c) CaCO H SO CaSO H O CO -> (iii) Ozone depletion (d) hv NO g NO g O g -> …
The pollution due to oxides of sulphur gets enhanced due to the presence of:
Presence of which fuel gas in the exhaust fumes shows incomplete combustion of fuel
Which of the following atmosphere layer contains clouds, water vapour and air?
Stratosphere lies above sea level between :
The troposphere extends up to the height of A Km from the sea level. Here A refers to.
There are concentric layers of air regions around earth and each layer has….A. Here, A refers to
Match the Column I with Column II and choose the correct option from the codes given below: Column I Column II A. Biodegradable pollutant(s) B. Non-Biodegradable pollutant(s) 1. Nuclear wastes 2. Plastic 3. Discard…
Non-biodegradable pollutants are created by
Which of the following are the examples of non-bio- degradable pollutants? I. DDT II. Nuclear waste III. Plastic materials Select the correct options
Pollutants which are slowly degradable and remain in the environment in an unchanged for many decades, termed as :
An average human being requires nearby…A… times more air than the food. Here, A refers to
Pollutant can be found in the form of : I. Solid II. Liquid III. Gas The correct option(s) is/are
Ozone layer is present in: I. Mesosphere II. Hydrosphere III. Mesosphere IV. Stratosphere
Ozone layer absorbs mainly …A… Here, A refer to.