19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Among the following, the one that is not a greenhouse gas is (NEET 2019)
Assertion: Photochemical smog results from the action of sunlight on NOx and hydrocarbons. Reason: It occurs in warm, dry and sunny climate. (AIIMS 2019)
Which of the following statement is NOT true about acid rain? (NEET 2020)
The incorrect statement about carbon monoxide is (NEET 2020)
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:
Content of CO2 present in atmosphere is :
In pregnant women who have the habit of smoking the increased CO level in blood may induce harmful effects like :
In blood, when concentration of carboxyhaemoglobin reaches about 3-4%, the oxygen carrying capacity of blood …A… Here, A refers to
What is true about CO gas?
Carbon monoxide is mainly released into air by :
Which of the following statement(s) is//are true about carbon monoxide?
Which of the following are the harmful effect of nitrogen dioxide? I. It retards the rate of photosynthesis II. It causes respiratory disease in children III. It is toxic to living tissues.
The irritant red haze in the traffic and congested place is due to…A..
In an automobile engine, (at high temperature) when fossil fuel is burnt, N2 and O2 combine to yield :
Which of the following pollutant(s)catalyse(s) the oxidation of sulphur dioxide to sulphur trioxide?
Which of the following diseases is caused due to SO2?. I. Digestive diseases II. Asthma III. Bronchitis IV. Emphysema
SO2 gas is poisonous to:
Which of the following are major gaseous pollutants present in the troposphere? I. H2S II. Oxides of sulphur, nitrogen and carbon III. O3
Ozone layer absorbs mainly …A… Here, A refer to.
Ozone layer is present in: I. Mesosphere II. Hydrosphere III. Mesosphere IV. Stratosphere
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