SCIENTIFIC OFFICER QUESTION PAPER

1. Which of the following is a cultivated silk ?
 (1) Taltar
 (2) Eri
 (3) Mulberry
 (4) Muga
Answer: (3) Mulberry

2. Which of the following is a multicellular fibre ?
 (1) Wool (2) Silk
 (3) Flax (4) Tencel
Answer: (3) Mulberry

3. The raw material used in the manufacture of Nylon 66 is
 (1) Castor oil
 (2) Adipic acid
 (3) Caprolactum
 (4) Ethylene glycol
Answer: (3) Mulberry

4. A good fibre forming polymer should not have
 (1) High Inter-molecular interaction

 (2) High degree of polymerisation
 (3) Linear polymeric chain
 (4) Branched polymeric chain
Answer: (3) Mulberry

5. A primary property of a textile fibre which refers to adequate strength is
 (1) Flexibility
 (2) Density
 (3) Cohesiveness
 (4) Tenacity
Answer: (4) Tenacity

6. The secondary property of a textile fibre is
 (1) strength
 (2) flexibility
 (3) uniformity
 (4) luster
Answer: (4) luster

7. Medula is associated with
 (1) Jute
 (2) Cotton
 (3) Wool
 (4) Silk
Answer: (3) Wool

8. The fibre that dissolves in 59% (W/V) sulphuric acid solution is
 (1) Polyester
 (2) Viscose 
 (3) Polypropylene
 (4) Nylon 66
Answer: (2) Viscose 

9. The fibre that will float on water is
 (1) Glass
 (2) Carbon
 (3) Nylon
 (4) Polypropylene
Answer: (4) Polypropylene

10. The range of spinning speed (m/min) used in the manufacture of partially oriented polyester yarn is
 (1) 1000 – 1200
 (2) 2000 – 2500
 (3) 4000 – 6000
 (4) 2800 – 3500
Answer: (4) 2800 – 3500

11. Lyocell is a
 (1) protein fibre
 (2) polyamide fibre
 (3) cellulosic fibre
 (4) polyester fibre
Answer: (3) cellulosic fibre

12. Texturizing is the process that introduce
 (1) Crimps
 (2) Zigzag shaping
 (3) Coils
 (4) All of the above
Answer: (4) All of the above

13. Spinneret having annular holes produces
 (1) Hallow fibre
 (2) Trilobal fibre
 (3) Micro fibre
 (4) Bicomponent fibre
Answer: (1) Hallow fibre

14. Most versatile yarn is produced by
 (1) OE frame
 (2) DREF
 (3) Ring frame
 (4) Airjet frame
Answer: (3) Ring frame

15. Most of the seed coat particles are removed in
 (1) Draw frame
 (2) Carding
 (3) Comber
 (4) Blow room
Answer: (2) Carding