Among the following, the one that is not a greenhouse gas is:
1. Sulphur dioxide
2. Nitrous oxide
3. Methane
4. Ozone
Which one of the following statements is not true?
1. | Concentration of dissolved oxygen below 5 ppm is good for the growth of fish. |
2. | Clean water would have a BOD value of less than 5 ppm. |
3. | Oxides of sulphur, nitrogen, and carbon are the most widespread air pollutant. |
4. | pH of drinking water should be between 6.5-8.5. |
The phenomenon in which atmospheric gases trap the heat radiations from the sun near the earth’s surface and keeps it warm is known as-
1. Natural greenhouse effect
2. Tyndall effect
3. Heating effect
4. Joule’s effect
The gas that damages the ozone layer is -
1. CFCs
2. CO2
3. CH4
4. SO2
Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?
1. N2O5
2. NO2
3. N2O
4. NO
Biosphere is
(1) In which individual interact to each other
(2) By which life originated
(3) The name of a bird
(4) Organic compound by which life diminishes
Which is not a renewable source
1. Sunlight
2. Coal
3. Water
4. Wind energy
Noosphere is synonyms of
(1) Environment
(2) Atmosphere
(3) Hydrosphere
(4) Stratosphere
When biosphere turns into human-dominated environment it is called
(1) Noosphere
(2) Troposphere
(3) Mesosphere
(4) Man sphere
The living organisms on or around the earth constitute
(1) Biome
(2) Biosphere
(3) Community
(4) Biocoenosis