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

The process of conversion of paper material into the slurry substance is called as

  1. Sorting

  2. Shredding

  3. Pulping

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

The process of waste paper recycling involves mixing of used paper with water and chemicals to break it down. It is then chopped up and heated, which breaks down the paper further into strands of cellulose, a type of organic plant material. This resulting mixture is called as pulp or slurry. This process is called as pulping. 

Thus, the correct answer is option C.  

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

Recycling 1 ton of paper saves

  1. 7000 gallons of water

  2. 17 trees

  3. Both A and B

  4. none of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

During the production of paper from the wood pulp, about 7000 gallons of water is used. If the paper is recycled, then this large amount of water can be saved. Studies have proven that one ton of paper is equivalent to seventeen fully grown trees. The paper is made from wood pulp. The trees are cut down for making paper. By saving and recycling of the paper, we can help to prevent deforestation. 

Thus, the correct answer is option C. 

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

The common bleaching agent of recycled paper is

  1. Hydrogen peroxide

  2. Sodium hydrosulfite

  3. Chlorine

  4. Both A and B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Paper recycling is a process wherein, the paper that is used, discarded by the consumer, is collected and transported to paper mills. The papers are mixed with water and chemicals, broken down, converted into paper pulp and transformed into reusable form. The pulp which is obtained is colored and bleaching is performed to remove the color. The chemicals which are used for bleaching are hydrogen peroxide, sodium hydrosulfite or sodium dithionite. These chemicals helps in deinking of the pulp and increasing brightness. 
Thus, 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

During paper recycling, .......... is used to bleach pulp.

  1. Bleaching powder

  2. Hydrogen peroxide

  3. Water

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

Paper recycling is a process wherein, the paper that is used, discarded by the consumer, is collected and transported to paper mills. The papers are mixed with water and chemicals, broken down, converted into paper pulp and transformed into reusable form. The pulp is colored and bleaching is performed to remove the color. The chemicals which are used for bleaching are hydrogen peroxide, sodium hydrosulfite or sodium dithionite. These chemicals help in deinking of the pulp and increasing brightness. 

Thus, the correct answer is option B.