Tag: recycling
Questions Related to recycling
The common bleaching agent of recycled paper is
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Hydrogen peroxide
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Sodium hydrosulfite
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Chlorine
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Both A and B
During paper recycling, .......... is used to bleach pulp.
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Bleaching powder
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Hydrogen peroxide
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Water
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None of the above
Paper recycling is a process wherein, the paper that is used, discarded by the consumer, is collected and transported to paper mills. The papers are mixed with water and chemicals, broken down, converted into paper pulp and transformed into reusable form. The pulp is colored and bleaching is performed to remove the color. The chemicals which are used for bleaching are hydrogen peroxide, sodium hydrosulfite or sodium dithionite. These chemicals help in deinking of the pulp and increasing brightness.
Non-biodegradable pollutants are created by
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Nature
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Excessive use of resources
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Humans
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Natural disasters
Non-biodegradable pollutants refer to toxic pollutants that are not degraded or decomposed naturally into less harmful compounds. Humans are the primary source of producing non-biodegradable pollutants. These pollutants include heavy metals such as arsenic, mercury and lead, polythene, synthetic fibres and DDT (dichloro-diphenyl-trichloroethane).
Plastic is one of the most harmful .......... waste.
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Biodegradable
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Non biodegradable
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Biotic
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Abiotic
The substance which can be easily decomposed by natural decomposers is called as biodegradable wastes such as humans and animal excreta, plant wastes. Whereas the substance that cannot be decomposed by the natural decomposers and harm the environment is called as non biodegradable such as plastics, nuclear wastes or radioactive wastes, chemical wastes like DDT. Abiotic is the nonliving component of the ecosystem which consists air, water sunlight etc. Biotic is the component of an ecosystem which consists all living things like animals and plants. Thus, the correct answer is option B.
Which one is non-biodegradable?
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DDT
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Sewage
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Livestock waste
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Market garbage
All materials are not recycled in the environment.
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True
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False
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Either
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Neither
Biodegradable wastes should be separated and kept in blue colour bins for garbage collectors.
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True
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False
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Either
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Neither
In the following groups of materials, which group(s) contains only non-biodegradable items?
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wood, paper, leather
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polythene, detergent, PVC
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plastic, detergent, grass
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plastic, bakelite, DDT
Multiple Choice Questions
Which one is non biodegradable
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sewage
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market garbage
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liverstock waste
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DDT
Non - biodegradable substances are the one which_________________
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Do not degrade
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Degrades efficiently
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Degrades very slowly
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Remains unharmed
- Non-Biodegradable wastes are those that cannot break down or degrade for many years. These are waste that cannot change into manure and they pile up causing pollution. Burning these fuels causes more pollution in the environment. The non-biodegradable wastes become useful when they can be recycled.