Newspaper can be recycled again and again how many times ?
Correct answer: D. 5
- A. 2
- B. 3
- C. 4
- D. 5
Explanation
Paper fibres become shorter and weaker each time they are pulped, so newspaper is commonly stated in textbook questions to be recyclable about five times. The number is an approximate practical value and depends on the paper and recycling process. Students may choose 2 or 3 by assuming paper fibres lose usefulness after only a few cycles.
Last updated
About Polymers
Polymers are large molecules made from repeating monomer units joined by covalent bonds. The topic distinguishes addition polymers such as polyethylene, PVC and polystyrene from condensation polymers such as nylon and polyester, and relates chain structure to thermoplastics, thermosetting polymers, elastomers, properties, uses and environmental concerns.
Practise Industrial Chemistry
292 free Industrial Chemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A polymer in which three different monomers combine called_____________?
A polymer is a large molecule formed by
A thermosetting plastic differs from a thermoplastic in that a thermosetting plastic
_ are product of reaction of an alcohol and aromatic bi-functional acids.
Bakelite is a polymer of Formaldehyde and