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Air is consist of _____ % of nitrogen.
Which of the following gases are present in air
c. Carbon dioxide
g. Water vapors
Undesirable changes in environment due to presence of unwanted substances is called
Harmful substance in air is known as
Find the odd man out with respect to sources of air pollutants
Which of the following in not the man made sources of air pollutants
Fuel from vehicle do not produces pollutants like
smog contains ______.
Sulphur dioxide causes damage to
Choose the correct reason responsible for damage of ozone layer
Burning of rice straw produces harmful pollutants like
Air pollution is not caused by
Taj mahal is losing its lustre due to
pH of rainwater is _____.
Acid rain causes when pH of rain drops fall below
2SO2(g) + O2(g) +______ → 2H2SO4
Atmospheric haze occurs due to ammonium salts in the atmosphere. True or False?
Choose the correct effect of acid rain
Cycle in which carbon from atmosphere is used and then is again send back to the atmosphere
Carbon cycle means
Atmospheric carbon dioxide is used to prepare food for plants. this process is known as
When plants and animals die, _______ from their body released into atmosphere.
Burning of fossil fuels releases large amount of carbon dioxide in air. This is the process of
Gases which trap the heat of sun are known as
Which of following is greenhouse gases?
Increase in carbon dioxide is resulting into
Effect of greenhouse gases on atmosphere is called depletion of ozone layer
Percentage of oxygen in atmosphere is __.
Atmospheric oxygen is used in burning of fossil fuel. the process is known as
Ozone layer is present in
Ozone contains __ oxygen atoms.
Ozone layer reflects back maximum of _______ emitted by sun.
Depletion ozone layer is result of increase in level of
Choose the effect on atmosphere due to depletion of ozone
“How can we reduce air pollution?
a. By planting trees
b. By using CNG and unleaded petrol
c. Avoid using plastic bags
d. Avoid burning”
Diesel and petrol can be replaced with _______ to reduce air pollution.
Fossil fuels can be substituted with pollution free sources like
Which of following practices is incorrect in order to reduce air pollution
Burning dried leaves in the soil increases
Van mahotsav during July is celebrated by
_______ amount of water from available water on earth can be used for domestic purpose.
Water pollution is caused when
Substances like _______ causes water pollution.
Death of aquatic plants and animals occurs due to water pollution. Main reason is
If hot water from factories are led in water resource it will lead to death of
Ground water gets polluted due to runoff of chemicals like
Water pollution is caused by
Choose correct option with respect to eutrophication
Domestic sewage causing water pollution contains
Which of the following is not an industrial waste causing water pollution?
River water is used in thermal power plants and other industries for cooling. later it is released in water sources, such type of pollution is known as
Water fit for drinking is called
Water can be purified with the help of
Wastewater from industries are passed to ______ and then released into sources of water
Water pollution can be minimised by _______
Choose correct way to minimise water pollution
River Ganga provides water in north India for
River Ganga is among the ___ most dangerous rivers in the world
Choose the correct reason behind pollution of river ganga
Most polluted region of river ganga in Uttar Pradesh is
River Ganga is considered on verge of extinction because