19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Phosphate pollution is caused by
The substance having the largest concentration in acid rain?
Which of the following chemical, harmful to ozone, is released by chlorofluoro carbon
Which of the following statement is false?
Which of the following is most abundant hydrocarbon pollutant
The ozone layer is present in
The gas responsible for ozone depletion
Which of the following is a sink for CO? (NEET 2017)
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)
Among the following, the one which is not a ‘greenhouse gas’, is (Kerala CEE 2014)
Which one of the following is not a common component of photochemical smog? (CBSE AIPMT 2014)
Which one of the following statements is not true? (Karnataka NEET 2013)
Assertion (A): CO and NO combine with haemoglobin. Reason (R): Both have equal affinity for haemoglobin. (AIIMS 2012)
Pollutants which are slowly degradable and remain in the environment in an unchanged for many decades, termed as :
Which one of the following statements regarding photochemical smog is not correct? (CBSE, AIPMT 2012)
There are concentric layers of air regions around earth and each layer has….A. Here, A refers to
The troposphere extends up to the height of A Km from the sea level. Here A refers to.
Stratosphere lies above sea level between :
Which of the following atmosphere layer contains clouds, water vapour and air?
Ozone layer is present in: I. Mesosphere II. Hydrosphere III. Mesosphere IV. Stratosphere
Ozone layer absorbs mainly …A… Here, A refer to.
Which of the following pollutant(s)catalyse(s) the oxidation of sulphur dioxide to sulphur trioxide?
Which of the following protect us from the harmful UV-radiation coming from the sun? I. O2 II. O3 III. N2 IV. CO2
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?