Question

The process of conversion of paper material into the slurry substrate is called as
A. Sorting
B. Shredding
C. Pulping
D. None of the above

Answer 1

Hint: Paper is a renewable resource. It is prepared from wood. The wood for making paper comes from the forest by cutting trees, which reduces the size of the forest and the number of plants leading to environmental pollution.

Complete answer:
The paper is used on a large scale in education for study, in industry and businesses for keeping records, in the packing industry etc. Every year a large amount of paper is discarded as waste. This waste paper can be recycled and converted into a new paper with the help of the paper recycling process. In this process, the waste (used or old) paper is mixed with water for some time and then, it is mixed with some chemical substances that help in the breakdown of this waste paper.

After then, it is chopped into smaller pieces and heated. During this process of chopping and heating, the paper gets converted into cellulose, plant products found in the cell wall, due to decomposition of it. It results in a fine mixture of components of the paper. It is called pulp or slurry. The process of conversion of waste paper into the slurry is called pulping.

Hence, the correct answer is option (C).

Additional information:
• Sorting is the process in which different items are arranged according to their property systematically.
• Shredding is the conversion of material into small pieces or in small strips.

Note: The recycling of waste paper reduces the emission of greenhouse gases. It helps to save a large amount of energy (up to 70%) used in the making of the new paper. It also prevents the cutting of trees for making new paper as 1 ton of paper is made up of 17 fully grown trees.