Tag: life is precious
Questions Related to life is precious
Air pollution is not caused by
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Pollen grains
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Hydroelectric power
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Industries
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Automobiles
Hydroelectric power is the cleanest form of electricity generation without contributing to the air pollution as it does not require the burning of fuel for working and water is provided by a natural force and moreover, it is renewable by rainfall causing refilling of reservoir. The dams are built which provide storage and it helps in reducing greenhouse gases emissions apart from the fact that once it becomes operative these have a low maintenance cost.
Which is not an air pollutant?
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Phosphate
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Hydrocarbons
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Pollen grains
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Carbon monoxide
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Sulphur dioxide
Multiple Choice Questions
In coal fired power plant, electrostatic precifications are used to control emission of
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$SO _2$
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$SPM$
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$CO$
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$NO _X$
Electrostatic precipitators use the principle of electrically charging particles in an exhaust and then allowing them to settle on variably charged platforms. It is done primarily for control of SPM or suspended particulate matter such as dust, fumes, smoke etc.
Multiple Choice Questions
A pollutant producing burning sensation of throat and eyes along with feeling of vomiting is
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Hydrogen sulphide
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Sulphur dioxide
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Hydrogen cyanide
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Arsenic.
H$ _2$S is a primary air pollutant emitted from putrifying substances, refineries, bituminous fuels etc. It causes burning sensation of throat and eyes along with feeling of vomiting or nausea. In plants it may cause defoliation and mottled chlorosis.
Multiple Choice Questions
Which particulate size is most harmful?
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$1.0\,\, \mu$m or less
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$1.5 \,\,\mu$m or less
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$2.5\,\,\mu$m or less
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$5.2 \,\,\mu$m- $2.5 \,\,\mu$m.
PM or particulate matter of diameter $2.5\,\,\mu$m or less is the most harmful as they are inhaled deep into the lungs causing serious lung damages, deposition in respiratory tracts and even death of the person.
Air pollution, trapped by leaves, through
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Forests
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Grasses
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Plant
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Animals
What is colorless, odorless, tasteless and cannot be felt?
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Water
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Air
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Gas
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pollutants
______ is a device for separation of pollutants from air.
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Autoclave
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Distillator
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Scrubber
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Electronic precipitator
There are several contaminants found in air. It is very important to purify this polluted air .A fine spray of water in a device known as scrubber can effectively separate many gases such as ammonia and sulphur dioxide.
The Air (Prevention and Control of Pollution) Act, was enforced in the year ______
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1982
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1981
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1968
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1988
The Air (Prevention and Control of Pollution) Act was enacted by the Parliament in 1981 for the control of air pollution and preservation of quality of air. This law has been enforced for sustaining the quality of environment.
Level of atmospheric $CO _2$ has increased in $2000$ from
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$280$ ppm to $360$ ppm
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$250$ ppm to $300$ ppm
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$300$ ppm to $340$ ppm
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$330$ ppm to $350$ ppm
Carbon dioxide is the greenhouse gas. It means that it traps the insolation from the sun and does not allow them to be reflected back. The trapped insolation work in warming the overall temperature of the earth. The level of atmospheric CO$ _{2}$ was around 200 ppm during the ice age. It rose to 280 ppm during the warmer interglacial periods. Presently, in the Anthropocene era, due to the excessive CO$ _{2}$ releasing activities like fossil fuel burning, the level of CO$ _{2}$ has risen to 360 ppm.