Tag: importance of the conservation of natural resources

Questions Related to importance of the conservation of natural resources

Identify the energy saving light bulb.

evs sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources

  1. Incandescent bulb

  2. Compact fluorescent light bulb

  3. Light emitting diode bulb

  4. Both B and C

Show answer
Correct Option: D
Explanation:

CFL (Compact fluorescent light bulbs) and LED (Light emitting diode bulb) are used in place of incandescent bulb because they use about 1/7$^{th}$ of the power used by the incandescent bulb. Hence, they are highly efficient in saving electricity.

Thus, the correct answer is option D.

Solar energy is the .......... source of energy.

evs sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources

  1. Conventional

  2. Non conventional

  3. Man made

  4. None of the above

Show answer
Correct Option: B
Explanation:

Energy generated by using wind, tides, solar, geothermal heat, and biomass is known as non-conventional energy. Solar energy is an inexhaustible non-conventional resource. There are three methods of harnessing solar energy- direct heating (e.g., solar cookers), thermoelectric conversion or solar thermal power plants, for example, steam generation and photovoltaic conversion.

Thus, the correct answer is option B.

Switch on the power when TV is not in use leads to the energy loss of

evs sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources

  1. 5 watts

  2. 10 watts

  3. 1 watts

  4. 50 watts

Show answer
Correct Option: B
Explanation:

The energy management is very important for the conservation of energy. It involves monitoring the consumption of energy, finding ways to save (control) energy and taking initiatives to conserve energy by replacing the inefficient equipments and controlling routine waste. The power should not be switched on when TV and any other audio or video device is not in use for a long time. It is because even in the switch off condition energy is consumed by the electric appliances and this is called standby power. 10 watts of energy is consumed by the TV even if, the power is on but TV is not in use. So, the correct option is 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

Show answer
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

Show answer
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

Show answer
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.