Tag: plastic waste

Questions Related to plastic waste

Recycling of paper can save

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  1. 60% of coal

  2. 10% of coal

  3. 43% of water

  4. 20% of energy

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Correct Option: A

The paper is tossed in .......... during the paper recycling process.

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  1. Grinder

  2. Pulper

  3. Incinerator

  4. None of the above

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Correct Option: B

Which of the following categorizes papers in different grade?

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  1. EPA

  2. WHO

  3. IUCN

  4. None of the above

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Correct Option: A
Explanation:

EPA also known as Environmental Protection Agency categorizes papers in five different grades. These are old corrugated containers, mixed paper, old newspapers, high grade deinked paper, pulp substitutes.

So, the correct answer is option A. 

Recycling of material provides

biology garbage in, garbage out recycling of paper ways to reduce non degradable garbage recycling plastic waste thermocol reduce, recycle, reuse

  1. Environmental benefits

  2. Economic benefits

  3. None of the above

  4. Both A and B

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Correct Option: D
Explanation:
Recycling is the process of collecting and processing materials that would otherwise be thrown away as trash and turning them into new products. It provides various benefits.
Economic benefits:
  • It saves money.
  • It creates jobs and generates revenue.
  • It acts as a promising industry.
Environmental benefits:
  • It reduces pollution because trash isn’t being burned and manufacturers can reuse materials instead of creating new ones which are more energy efficient.
  • It conserves natural resources such as timber, water, and mineral.
  • It reduces greenhouse gas emissions that contribute to global climate change.
  • It leads to sustain the environment for future generations.
So, the correct answer is option D.

Which of the following is used for deinking of papers?

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  1. Surfactant

  2. Oxygen

  3. Carbon chloride

  4. None of the above

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Correct Option: A
Explanation:
Deinking is a very critical step in the manufacturing of paper or board from recycled paper or board. In this process, printing ink, dirt, and specks are removed from the fibres. It is done with a combination of mechanical action and chemicals added into the pulper and at flotation which involves the use of surfactants to ensure the detachment of ink from the fibres.
Generally, the amount of surfactant used is about 0.025-0.25%
So, the correct answer is option A.

Old newspapers can be recycled into

biology garbage in, garbage out recycling of paper ways to reduce non degradable garbage recycling plastic waste thermocol reduce, recycle, reuse

  1. New paper

  2. Paper bag

  3. Plastics

  4. Both A and B

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Correct Option: D

Sheela make a paste of paper from her old note books. But she wants to make colourful paper. What she will used to make paper colourfull?

biology garbage in, garbage out recycling of paper ways to reduce non degradable garbage recycling plastic waste thermocol reduce, recycle, reuse

  1. Paints

  2. Edible colour

  3. Colourfull paper

  4. Both B and C

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Correct Option: D

Which of the following paper cannot be recycled?

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  1. Old newspaper

  2. Note book

  3. Magazine

  4. Plastic coated paper

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Correct Option: D

Flower petals can be used to give colour to the

biology garbage in, garbage out recycling of paper ways to reduce non degradable garbage recycling plastic waste thermocol reduce, recycle, reuse

  1. Paper

  2. Plastics

  3. Water

  4. Food

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Correct Option: A

Paper is made up of

biology garbage in, garbage out recycling of paper ways to reduce non degradable garbage recycling plastic waste thermocol reduce, recycle, reuse

  1. Animal

  2. Plant

  3. Chemicals

  4. None of the above

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Correct Option: B