Tag: recycling of paper

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Questions Related to recycling of paper

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

Which of the following categorizes papers in different grade?

  1. EPA

  2. WHO

  3. IUCN

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
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. 

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

Recycling of material provides

  1. Environmental benefits

  2. Economic benefits

  3. None of the above

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
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.
Multiple choice biology garbage in, garbage out recycling of paper ways to reduce non degradable garbage recycling plastic waste thermocol reduce, recycle, reuse

Which of the following is used for deinking of papers?

  1. Surfactant

  2. Oxygen

  3. Carbon chloride

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
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.
Multiple choice biology garbage in, garbage out recycling of paper ways to reduce non degradable garbage recycling plastic waste thermocol reduce, recycle, reuse

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?

  1. Paints

  2. Edible colour

  3. Colourfull paper

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To make paper colorful, one can use edible colors or incorporate already colorful paper scraps into the pulp mixture.

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

Which of the following paper cannot be recycled?

  1. Old newspaper

  2. Note book

  3. Magazine

  4. Plastic coated paper
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plastic coated paper contains a layer of plastic that makes it difficult to separate the paper fibers during the standard recycling process. Other options like newspapers and notebooks are made of standard paper and are easily recyclable.