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प्रश्न
Identify the wrong statement in the following.
विकल्प
The clean water would have a BOD value of more than 5 ppm
Greenhouse effect is also called as Global warming
Minute solid particles in air is known as particulate pollutants
Biosphere is the protective blanket of gases surrounding the earth
उत्तर
The clean water would have a BOD value of more than 5 ppm
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संबंधित प्रश्न
Which one of the following is the cause of acid rain?
Describe the major source of air pollution.
Which is the natural source of air pollution?
What is the unit for measuring noise pollution?
In which town, do vehicles emit the most carbon monoxide?
Which of the following is not the source of noise pollution?
The consequences of global warming may be:
(i) increase in average temperature of the earth.
(ii) melting of Himalayan Glaciers.
(iii) increased biochemical oxygen demand.
(iv) eutrophication.
What is the importance of measuring BOD of a water body?
Oxidation of sulphur dioxide into sulphur trioxide in the absence of a catalyst is a slow process but this oxidation occurs easily in the atmosphere. Explain how does this happen. Give chemical reactions for the conversion of SO2 into SO3.
Which of the following is/are the causes of pollution in Yamuna?
- Industrial pollution from Kanpur.
- Domestic waste from Delhi.
- Extraction of water by Haryana and Uttar Pradesh for irrigation.
