Environment and pollution - class-IX
Description: environment and pollution | |
Number of Questions: 16 | |
Created by: Jatin Goyal | |
Tags: pollution natural resources- air, water and land chemistry environment for a pollution free nature environmental chemistry air economics environment pollution |
Which of the following is not a cause of pollution?
Pollution is a change in physical, chemical or biological characters of our land and water that may be:
Taj mahal is threatened by which atmospheric pollutant released by Mathura refinery?
Cutting of trees decreases:
The increase in temperature on the earth disturbs the water cycle and reduces rainfall. The situation may lead to:
Tropical cyclones that originate in the Chine sea are?
Among the following compounds, which one is not responsible for the depletion of ozone layer?
Which of the following is not primary pollutant?
Which of these are particulates?
Which will not cause any atmospheric pollution?
The medium which is effected by a pollutants is called________.
Natural source of pollution is:
Which of the following is not regarded as a pollutant?
Match the column I with column II and mark the appropriate choice.
Column I | Column II | ||
---|---|---|---|
(A) | Biodegradable pollutants | (i) | DDT |
(B) | Non-biodegradable pollutants | (ii) | $SO _{2}$ |
(C) | Primary pollutants | (iii) | PAN |
(D) | Secondary pollutants | (iv) | Sewage |
Match the upper limit concentration of the pollutants given in column I with column II and mark the appropriate choice.
Column I | Column II | ||
---|---|---|---|
(A) | Lead | (i) | 500 ppm |
(B) | Sulphate | (ii) | 10 ppm |
(C) | Nitrate | (iii) | 50 ppb |
(D) | Fluoride | (iv) | 50 ppm |
The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants. Which of the following belongs to secondary air pollutants?