Rayon is a ____________ fibre?

Related Mcqs:

1. The synthetic fibres produced from _____________ are known as rayon?

   A. Lignin
   B. Cellulose
   C. Polyamides
   D. Ethylene glycol

2. Viscose rayon is _______________?

   A. Cellulose nitrate
   B. Regenerated cellulose nitrate
   C. Regenerated cellulose acetate
   D. None of these

3. Rayon is superior to cotton in making gauge for wound treatment, because rayon_____________________?

   A. Is a synthetic polymer
   B. Does not stick to the wound unlike cotton
   C. Can absorb over 90% of its own weight of water
   D. Both B. and C.

4. Orlan fibre which is used as a wool substitute is __________________?

   A. An amorphous polymer
   B. A natural polymeric fibre
   C. Polyacrylonitrile
   D. Poly-methyl-methacrylate (PMMA)

5. Scouring is a finishing operation during the manufacture of fibre, which aims at ______________ of fibres?

   A. Improving the stretchability
   B. Dyeing/colouring
   C. Detergent solution washing
   D. Glycol soaking

6. Cellulose content in bamboo fibre is about ______________ percent?

   A. 10
   B. 20
   C. 50
   D. 85

7. Most of the fibre forming polymers are crystalline in nature, one of the exceptions being ______________ which is amorphous in nature?

   A. Nylon
   B. Polyacrylonitrile
   C. Polypropylene
   D. Polyester

8. Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their________________?

   A. Molecular sizes
   B. Magnitude of intermolecular forces
   C. Resistance to heat
   D. Polymerisation mechanism
   Answer: Option B

9. Polystyrene is a ____________ plastic at room temperature?

   A. Ductile
   B. Brittle
   C. Malleable
   D. None of these

10. ____________ is a copolymer?

    A. Styrene butadiene rubber (SBR)
    B. Neoprene
    C. PVC
    D. None of these