Tag: waste products

Questions Related to waste products

In ...................... strategy for saving the environment, things are used again and again.

commercial studies waste products conservation of natural and energy resources energy conservation and sources reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Reuse

  2. Invent

  3. Both A and B

  4. None of the above

Show answer
Correct Option: A
Explanation:

In reuse strategy for saving the environment, things are used again and again. Many items found around the home can be used for different purposes. So before you throw those items away, think about how they can be reused.

What is the most valuable recyclable component of a circuit board?

commercial studies waste products conservation of natural and energy resources energy conservation and sources reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Copper

  2. Silver

  3. Gold

  4. Platinum

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Correct Option: B

Non-biodegradable pollutants are created by 

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Nature

  2. Excessive use of resources

  3. Humans

  4. Natural disasters

Show answer
Correct Option: C
Explanation:

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).

So, the correct answer is 'Humans'.

Plastic is one of the most harmful .......... waste.

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Biodegradable 

  2. Non biodegradable

  3. Biotic

  4. Abiotic

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Correct Option: B
Explanation:

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?

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. DDT

  2. Sewage

  3. Livestock waste

  4. Market garbage

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Correct Option: A
Explanation:
A. Dichlorodiphenyltrichloroethane or DDT is a crystalline, colourless and odourless compound which is used as an insecticide.
B. Sewage is the wastewater which is generated from the homes and factories.
C. Livestock waste is generated from livestock industries of meat, egg and milk.
D. Market garbage is the rubbish stuff produced from various factories and industries.
Out of all these options, DDT is non-biodegradable which means that it cannot be degraded by the action of microbes.
So, the correct answer is 'DDT'.

All materials are not recycled in the environment.

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. True

  2. False

  3. Either

  4. Neither

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Correct Option: A
Explanation:
Many elements are recycled in nature through biogeochemical cycles. For example, carbon, hydrogen, nitrogen, sulphur etc. Biogeochemical cycles are also known as nutrient cycles. Through these cycles, there is exchange or circulation of nutrients between biotic and abiotic components of biosphere. The elements are provided to organisms by the earth and after their death and decay, the elements are returned to earth again.However, plastics, glass, synthetic fibres etc are not recycled in the environment
Hence, the statement given in the question is correct.
So, the correct answer is 'True'

Biodegradable wastes should be separated and kept in blue colour bins for garbage collectors.

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. True

  2. False

  3. Either

  4. Neither

Show answer
Correct Option: B
Explanation:
Biodegradable wastes can be decomposed by the action of microbes. They are kept in green coloured bins for garbage collectors. Green bins are meant for collecting wet waste such as kitchen waste, fruit peels, food items etc. Blue coloured bins are meant for collecting dry waste which include plastic items, glass jars, metal cans, paper bags, polybags etc. which can be recycled or reused. 
Hence, the statement given in the question is incorrect.
So, the correct answer is 'False'. 

In the following groups of materials, which group(s) contains only non-biodegradable items?

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. wood, paper, leather

  2. polythene, detergent, PVC

  3. plastic, detergent, grass

  4. plastic, bakelite, DDT

Show answer
Correct Option: B,D
Explanation:
Non-biodegradable substances are the substances that can't be decomposed or degraded into simpler molecules by the action of microbes. Therefore these substances remain in nature for a long period of time. These include polythene, detergent, PVC (Polyvinyl chloride, a synthetic polymer of plastic) plastic, bakelite, DDT (a pesticide) etc.
Biodegradable substances can be decomposed into simpler molecules by the action of microbes. These include wood, paper, leather, grass etc.
So, the correct answer is option B and D.

Multiple Choice Questions
Which one is non biodegradable

biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. sewage

  2. market garbage

  3. liverstock waste

  4. DDT

Show answer
Correct Option: D
Explanation:
DDT (dichlorodiphenyltrichloroethane) is a colorless and crystalline organochlorine known for its insecticidal properties.  It is nonbiodegradable and tends to accumulate and magnify in amount due to subsequent uses posing grave environmental impacts.
So, the correct answer is option D, DDT.

Non - biodegradable substances are the one which_________________

recycling importance of the conservation of natural resources reduce, recycle, reuse waste products biology

  1. Do not degrade

  2. Degrades efficiently

  3. Degrades very slowly

  4. Remains unharmed

Show answer
Correct Option: A
Explanation:

  • 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.

So the correct option is 'Do not degrade'.