19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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
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
A substance which cause pollution is known as
Environmental chemistry deals with the study of the