19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
BOD is connected with
Eutrophication causes reduction in
Phosphate fertilizers when added to water leads to
Phosphate pollution is caused by
The substance having the largest concentration in acid rain?
The false statement among the following is :
The greatest affinity for haemoglobin is shown by which of the following
Which of the following causes lung cancer
The non-viable particulate among the following is
Ozone layer of stratosphere requires protection from indiscriminate use of
The greenhouse effect is caused by
Which of the following acts as a sink for CO?
Which of the following chemical, harmful to ozone, is released by chlorofluoro carbon
Which of the following statement is false?
The aromatic compounds present as particulates are
The substance which is a primary pollutant?
The statement which is not true
Which forms the part of hazy fumes of photochemical smog
Formation of London smog takes place in
Which of the following is not involved in the formation of photochemical smog?
Ozone is an important constituent of stratosphere because it
Formation of ozone in the upper atmosphere from oxygen takes place by the action of
Which of the following is most abundant hydrocarbon pollutant
The ozone layer is present in
The gas responsible for ozone depletion