Cellulose is the main constituent of most ______________ fibres?
Cellulose is the main constituent of most ______________ fibres?
A. Acrylic
B. Spandex
C. Synthetic
D. Natural
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Which of the following is a natural polyamide fiber?
Which of the following is a natural polyamide fiber?A. Wool
B. Silk
C. Cotton
D. None of theseWhich of the following polymers is used for making a non stick coating on frying pans ?
Which of the following polymers is used for making a non stick coating on frying pans ?A. Bakelite
B. Teflon
C. Perspex
D. PVCSynthetic polymer produced by using terephthalic acid and ethylene glycol is _________________?
Synthetic polymer produced by using terephthalic acid and ethylene glycol is _________________?A. Terylene
B. Nylon-66
C. PVC
D. PolystyrenePolystyrene is a ____________ plastic at room temperature?
Polystyrene is a ____________ plastic at room temperature?A. Ductile
B. Brittle
C. Malleable
D. None of theseNylon-6 is manufactured from _______________?
Nylon-6 is manufactured from _______________?A. Caprolactam
B. Adipic acid and Hexamethylenediamine
C. Maleic anhydride and Hexamethylenediamine
D. Sebacic acid and Hexamethylenediamine______________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine?
______________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine?A. Epoxy
B. Amino
C. Alkyd
D. Phenolic