19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Match the Column I with Column II and choose the correct option from the codes given below : Column I Column II A. Gaseous air pollutants B. Particulate pollutants 1. CO2 2. Smoke 3. Smog 4. O3 Codes A B
Match the Column I with Column II and choose the correct option from the codes given below : Column I Column II A. SO2 B. NO2 C. CO 1. Binds with haemoglobin 2. Leads to stiffness of flower Buds 3. Irritant red haze i…
Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because.
Which of the following statement(s) is/are true? I. Carbon monoxide is a secondary air pollutant II. SO2 causes brown air effect during traffic congestion in cities. III. DDT is a non-biodegradable pollutant.
Which of the following statement(s) is/are incorrect regarding photochemical smog ?
Photochemical smog is caused by light mediated reaction between:
Which is true about DDT
The type of pollution caused by spraying of DDT
Water is often treated with chlorine to
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?