This set of Pulp and Paper Multiple Choice Questions and Answers (MCQs) focuses on “Nonwood and Recycled Fiber”.
1. About 80% of all waste paper comes from one of three sources: corrugated boxes, newspapers and office papers.
a) True
b) False
View Answer
Explanation: About 80% of all waste paper comes from one of three sources: corrugated boxes, newspapers and office papers. About 10% of waste paper is de-inked to be utilized for printing or tissue papers.
2. About 10% of fiber is utilized to make paper each year worldwide is from non-wood plant fibers, which include cotton, straws and canes.
a) True
b) False
View Answer
Explanation: About 10% of the fiber utilized to make paper each year worldwide is from non-wood plant fibers, including cotton, straws, and others.
3. Cotton is the pure form of __________
a) Protein
b) Vitamins
c) Cellulose
d) Pulp
View Answer
Explanation: Natural cotton is the purest form of cellulose. Cotton forms are too long to make good paper. It has little hemicellulose and leads to low strength papers.
4. Which of the following is a fiber mat made using synthetic fibers?
a) Grasses
b) Canes
c) Reeds
d) Nonwovens
View Answer
Explanation: Nonwovens are fiber mats made using synthetic fiber. They can be formed much like paper into a cloth material instead of using a weaving process.
5. What is sugar cane residue called?
a) Grasses
b) Kenaf
c) Bagasse
d) Canes
View Answer
Explanation: Bagasse is pulped by the kraft or soda process. It must be depithed because the inner pith cells are useless for papermaking.
6. Pulp from bamboo is utilized in fine papers and the resulting paper is __ than paper of straw pulp.
a) Weaker
b) Stronger
c) Thicker
d) Thinner
View Answer
Explanation: The resulting paper is stronger than paper of straw pulp because of its higher silica content.
7. ____________ are utilized in products such as battery separators, glass fiber filter mats, and as reinforcement in a large variety of reinforcement materials.
a) Glass fibers
b) Ceramics
c) Thermosetting tissue
d) Pulpwood
View Answer
Explanation: Glass fibers are utilized in products such as battery separators, glass fiber filter mats, and other materials.
8. Straw should not be utilized because?
a) Agriculture’s by-product
b) Needs little refining
c) Straws are bulky and contain silica
d) Often cheaper than wood
View Answer
Explanation: These are stalks of grain crops obtained after threshing, may be processed into pulp. Straws from the most edible grains are suitable.
9. Paper bags should be utilized because?
a) Transportation and storage problems
b) Needs little refining
c) Straws are bulky and contain silica
d) Degrades very quickly
View Answer
Explanation: These are the stalks of grain crops obtained after threshing, may be processed into pulp. Paper bags from most edible grains are suitable.
10. Straw should not be utilized because?
a) Byproducts from agriculture
b) Needs little refining
c) Degrades very quickly
d) Often cheaper than wood
View Answer
Explanation: These are the stalks of grain crops obtained after threshing, may be processed into pulp. Straws from most edible grains are suitable.
Sanfoundry Global Education & Learning Series – Pulp and Paper.
To practice all areas of Pulp and Paper, here is complete set of 1000+ Multiple Choice Questions and Answers.
- Practice Chemical Engineering MCQs
- Check Chemical Engineering Books
- Apply for Chemical Engineering Internship
