Which of the following does the nitrogen fixation from the atmosphere in some plants ?
Earthworm
Termites
Creatures
Bacteria
Which of the following gases do termites significantly contribute to the atmosphere?
Methane
NO2
CO2
Water vapour
By how much percentage is the amount of fresh water on the earth less than that of the total?
2
5
3
4
Which type of water is made drinkable by desalination?
River
Well
Lake
Sea
Which of these renewable resource is used to generate electricity?
Wind energy
Hydel energy
Solar power
All of the above.
During the process of photosynthesis , plants use energy from the:
Atmosphere
Sun
Fossils
Earth's crust
Glucose + Oxygen → CO2 + H2OWhich process is this ?
Combustion
Photosynthesis
Respiration
Transpiration
Which of the following oxides are released from industry and which dissolve in rain water to produce 'acidrain'.
Nitrogen and Sulfur
Nitrogen and Silicon
Nitrogen and Phosphorous
Nitrogen and Selenium
Which of the following is used to remove pesticides and some other dissolves substances in modern water treatment process?
Scrubber
Ozone
Filters
Lime
Pollution in car exhausts can be controlled by using:
Fractional distillation
Catalytic converters
Scrubbers
Microstrainers
