Objective question

Objective question 

Q1. which of the following is a leaf fiber 

(a) Ramie              (b) Banana                    (c) Flax                        (d) sisal

Q2. which of the following techniques would provide accurate measurement of crystallinity in   a semi-crystalline fibre

(a) density measurement                              (b) differential scanning calorimetry (DSC)  

(c) wide angle  X-ray diffraction                     (d) infra red spectrosopy

Q3. the mount of recommended water (by weight ) in dried poly(ethylene terephatalate) chips suitable for melt spinning is  in the range of 

(a) Aproxx 1%         (b) 0.1% to 0.4%        (c) 0.04% to 0.06%        (d) 0.001% to 0.005%

Q4. Average number of 3 decitex fibers in a yarn of 20s English count will be approx

(a)  10        (b) 50      (c)100                 (d)200

Q5. if 100% cotton yarn of 15 tex in to be replaced by cotton/acrylic (70/30) blended   yarn of same twist and diameter then the linear density of blended yarn will be

(a) 11.7 tex    (b) 12.7tex        (c)13.7tex         (d) 14.7tex

Answer

1. (d)
2. (c)
3. (d)
4. (c)
5. (c)