Tag: ways to reduce non degradable garbage

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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.

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

Select the correct sequence of the process of paper recycling.

  1. Collection, sorting, pulping, deinking

  2. Collection, pulping, sorting, deinking

  3. Collection, deinking, sorting, pulping

  4. Deinking, sorting, pulping
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Paper, torn clothes and metallic and plastic discards are recyclable wastes. Recycling is processing used materials (waste) into new, useful products. This is done to reduce the use of raw materials that would have been used. Paper recycling is a process wherein, a paper that is used, discarded by the consumer, is collected and transported to paper mills. Here, it is sorted and is mixed with water and chemicals and converted into paper pulp. Deinking is carried out to remove printing ink from the paper fibers from the pulp and transformed into reusable form.

Thus, 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

Which of the following human activity can maintain the biological equilibrium?

  1. Poaching endangered animals

  2. Recycling of paper

  3. Deforestation

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

Recycling is the process by which the product is recycled and made available to use again. The recycling of paper not only saves valuable space in our landfills, but it also helps reduce greenhouse gas emissions and when one recycle, one also have to use fewer resources like water and energy to turn that item into another usable item. If the paper is recycled, fewer trees will be cut down for paper pulp. This will help to maintain the biological equilibrium in the ecosystem.

Thus, the correct answer is option B. 

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

Carbon chloride is used in

  1. Bleaching of new paper

  2. Bleaching of recycled paper

  3. Bleaching of clothes

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

Carbon tetrachloride (often referred to in older texts as carbon chloride) was historically used in various industrial processes, including the bleaching and cleaning of recycled paper fibers.