Note: For systematic learning of the Fiber analysis MCQs in Forensic Science, you can hover over the main page of Trace Evidence MCQs sections.

1. What is a polymer?

  1. Two or more atoms held together by chemical bonds
  2. A substance composed of a large number of atoms
  3. A molecule with High molecular mass
  4. A basic unit of the molecule

Answer: (3) A molecule with High molecular mass

2. Fibers obtained from animals or plants may also be called as:

  1. Synthetic fiber
  2. Natural fiber
  3. Man Made fiber
  4. Regenerated fiber

Answer: (2) Natural fiber

3. __________ is an interlocked fiber that is suitable for the production of textiles, knitting, or sewing.

  1. Fiber
  2. Fabric
  3. Yarn
  4. All of the above

Answer: (3) Yarn

Explanation: -> Fibers are spun into yarn
->  Yarn is a continuous twisted strand of fiber used for knitting or textile works.
-> Clothes (fabric) made from interlocking or sewing yarn.

4. The most prevalent plant fiber is:

  1. Wool
  2. Hemp
  3. Mohair
  4. Cotton

Answer: (4) Cotton

Explanation: Cotton is the world’s most widely used natural fiber of the global textile industry.
->  About 25 million tonnes of cotton are produced annually.

5. Which of the following is the strongest natural fiber?

  1. Natural Cotton
  2. Spider Cotton
  3. Spider Silk
  4. Spider Hemp

Answer: (3) Spider Silk

Explanation: Facts about spider silk:
-> produced from proteins, called spidroins, a special gland of the spider.
-> five times stronger by weight than high-grade steel
-> highly flexible and stretchy

6. Match the following:

(a) Cotton(i) Artificial
(b) Pure silk(ii) Vegetable
(c) Rayon(iii) Mineral
(d) Asbestos(iv) Animal

Answer: (3) (ii), (iv), (i), (iii)

-> Rayon: Artificial regenerated cellulose fiber.
-> Asbestos: Silicate minerals that have long and thin fibrous crystals called fibrils.

7. Which are the natural fibers?

  1. Cotton, jute, wool, hemp
  2. Cotton, nylon, rayon, wool
  3. Silk, jute, polyester, cotton
  4. Rayon, silk, hemp, polyester

Answer: (1) Cotton, jute, wool, hemp

8. Which of these fibers are derived from animals?

  1. Kashmiri, Wool 
  2. Pashmina, Rayon
  3. Cotton, Polyesters 
  4. Terylene, Wool

Answer: (1) Kashmiri, Wool

Explanation: Kashmiri Wool (also written as Cashmere wool) is animal fiber from the Kashmiri and pashmina goats.

9. Silk is a type of _________ produced by pupa.

  1. Skin fiber
  2. Hair
  3. Salivary fiber
  4. Both (1) and (3)

Answer: (3) Salivary Fiber

10. Which of these fibers is not derived from plants?

  1. Cotton, Polyester
  2. Nylon, Coir
  3. Flax, Ramie
  4. Wool, Silk

Answer: (4) Wool, Silk

11. The following is a regenerated fiber:

  1. Cotton
  2. Artificial silk
  3. Rayon
  4. Terylene

Answer: (3) Rayon

Explanation: Regenerated fibers are the class of manufactured fibers that are regenerated by the conversion of natural cellulose with some chemicals to form new fibers. Some examples of regenerated fibers are viscose, rayon, acetate, triacetate, modal, Tencel, and Lyocell.

12. Flax fiber is derived from plants. The part of the plant is

  1. Seed
  2. Stem
  3. Leaf
  4. Root

Answer: (2) Stem

Explanation: Flax fibers are obtained from the stems of the plant Linum usitatissimum.

13. Mohair fiber is placed under which of the following categories?

  1. Animal fibers
  2. Vegetable fibers
  3. Mineral fibers
  4. Man-made fibers

Answer: (1) Animal fibers

14. As “Wool” is obtained from sheep hair likewise “mohair” is obtained from:

  1. Camel hair
  2. Angora goat hair
  3. Asiatic goat hair
  4. Vicuna hair

Answer: (2) Angora goat hair

Explanation: -> Mohair Fiber originated from Angora goat.

15. Match the following :

(a) Cotton(i) Bast fiber
(b) Jute(ii) Leaf fiber
(c) Asbestos(iii) Seed fiber
(d) Sisal(iv) Mineral fiber

Answer: (3) (iii), (i), (iv), (ii)

16. Which of the following pairs is correctly matched?

Common nameScientific Name
(a) Jute(i) Hibiscus cannabinus
(b) Hemp(ii) Agave fourcroydes
(c) Henequin(iii) Saccharum officinarum
(d) Kenaf(iv) Corchorus capsularis
 (v) Cannabis sativa

Answer: (4) (iv), (v), (ii), (i)

Explanation: Saccharum officinarum is the scientific name for sugarcane.

17. Match the following:

List – IList – II
(a) Animal fiber(i) Rayon
(b) Vegetable fiber(ii) Silk
(c) Mineral fiber(iii) Graphite
(d) Synthetic fiber(iv) Asbestos
 (v) jute

Answer: (2) (ii), (v), (iv), (I)

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