Description : Viscose rayon is chemically (A) Cellulose nitrate (B) Regenerated cellulose nitrate (C) Cellulose acetate (D) Regenerated cellulose acetate
Last Answer : (D) Regenerated cellulose acetate
Description : Viscose rayon is (A) Cellulose nitrate (B) Regenerated cellulose nitrate (C) Regenerated cellulose acetate (D) None of these
Last Answer : (D) None of these
Description : Pick out the wrong statement. (A) Denier is defined as weight in gm of 9000 metres length of a fibre, while tex is defined as weight in gm of 1000 metres length of fibre (B) ... fibres are all prepared by wet spinning (D) Nylon fibres have greater water absorption capacity than polyester fibres
Last Answer : (C) Dacron fibres, acrylic fibres, viscose rayon fibres & cellulose acetate fibres are all prepared by wet spinning
Description : Celluloid is (A) Cellulose acetate (B) Regenerated cellulose (C) Cellulose nitrate (D) Cellulose acetate butyrat
Last Answer : (C) Cellulose nitrate
Description : Celluloid is chemically (A) Cellulose acetate (B) Regenerated cellulose (C) Cellulose nitrate (D) Cellulose acetate butyrate
Description : In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres. (A) Viscose rayon (B) Acrylic (C) Polyvinyl acetate (D) Saturated polyeste
Last Answer : (D) Saturated polyeste
Description : Automobile steering wheels are normally made of (A) Cellulose acetate (B) Cellulose nitrate (C) PVC (D) High density polythene
Last Answer : (A) Cellulose acetate
Description : Which of the following is not a natural fibre? (A) Silk (B) Viscose rayon (C) Wool (D) Cotton
Last Answer : (B) Viscose rayon
Description : For spinning viscose rayon, the extrusion spinnerettes are made of (A) Platinum or gold alloys (B) High carbon steel (C) Aluminium (D) Nickel
Last Answer : (A) Platinum or gold alloys
Description : Viscose rayon (A) Cannot be made from sulphite pulp (B) Utilises H2SO4 , NaOH and CS2 during its manufacture (C) Cannot yield textile grade fibre (D) None of these
Last Answer : (B) Utilises H2SO4 , NaOH and CS2 during its manufacture
Description : In the manufacture of viscose rayon, the raw material used industrially is (A) Eucalyptus wood (B) Bamboo (C) Bagasse (D) Fine teak wood
Last Answer : (D) Fine teak wood
Description : Carbon disulphide is mainly used in the production of(A) Viscose rayon (B) Corundum (C) Plasticiser for unsaturated polyester (D) Paints
Last Answer : (A) Viscose rayon
Last Answer : Cotton lintus , bamboo pulp , wood pulp
Last Answer : Viscose rayon regenerated cellulosic fiber. That is to make cellulose cellulose with chemicals again. Some other regenerated fibers are modal , tensile.
Description : A polymeric substance used to make parachute is – (1) Rayon (2) Viscose (3) Cotton (4) Terylene
Last Answer : (2) Viscose Explanation: Viscose is a viscous organic liquid used to make rayon and cellophane. Viscose is also used as shorthand for Viscose Rayon, thus becoming synonymous with rayon, a soft man-made fibre commonly used in dresses, linings shirts, shorts, coats, jackets, and other outer wear.
Description : Retting is used in the processing of which of the following fibres: a. Cotton b. Linen c. Silk d. Viscose rayon
Last Answer : b. Linen
Description : Example of natural plant fibre: a. Silk b. Cotton c. Viscose rayon d. Polyester
Last Answer : b. Cotton
Description : A polymeric substance used to make parachute is (1) Rayon (2) Viscose (3) Cotton (4) Terylene
Last Answer : Viscose
Description : In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament ... is used for __________ fibres. (A) Polythene (B) PVC (C) Rayon (D) Polyvinyl acetate
Last Answer : (B) PVC
Description : The synthetic fibres produced from __________ are known as rayon. (A) Lignin (B) Cellulose (C) Polyamides (D) Ethylene glyco
Last Answer : (B) Cellulose
Description : The chief raw material used for manufacturing Rayon is : (1) Nylon (2) Cellulose (3) Silicon (4) Radium and Argon
Last Answer : (2) Cellulose Explanation: Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers, it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic or artificial fiber.
Description : Which of the following products is not derived from cellulose? (a) Rayon (b) Insulin (c) Gun cotton (d) Paper
Last Answer : Insulin
Description : Which of the following statements is false about cellulose? (a) It is a polymer of glucose molecules joined in β-1,4 linkages. (b) It is a major component of cotton. (c) It is used in the manufacture of Dacron fibres. (d) It is used in the manufacture of Rayon fibres
Last Answer : It is used in the manufacture of Dacron fibres.
Description : The purest natural form of cellulose is _______. a) rayon b)cotton c)wool d)silk
Last Answer : b)cotton
Last Answer : Cellulose
Description : Which of the following low molecular weight (
Last Answer : (B) Polyvinyl acetate
Description : Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m2 . Which of the following polymers has the maximum film elongation (of the order of 100%)? (A) Water impermeable cellophane (B) Polythene (C) Cellulose acetate (D) Teflon
Last Answer : (B) Polythene
Description : Pick out the wrong statement. (A) Cellulose acetate membranes are used in dialysis process (B) Elutriation process refers to when the soluble material is largely concentrated on the surface of an ... that various streamflow from one to another (D) Zirconia probe is used for the humidity measurement
Last Answer : (D) Zirconia probe is used for the humidity measurement
Description : Photographic plates are covered with black paper because (a) the cellulose acetate of the paper must remain fresh (b) sunlight is easily absorbed by black paper and it helps develop the film ... paper prevents contact with light (d) the conversion of silver bromide to metallic silver is essential
Last Answer : Ans:(c)
Description : Pick up the non-inflammable plastic from the following: (A) Cellulose acetate plastics (B) Polyvinyl chloride plastics (C) Phenol formaldehyde plastic (D) Urea formaldehyde plastic
Last Answer : Answer: Option B
Description : Commonly used thinner in (A) Lacquer paints, is alcohol (B) Cellulose paints is ethyl acetate (C) Oil paints, is naphtha (D) All the above
Last Answer : Answer: Option D
Description : In nail polish, following polymer is used as a film-former : (A) Nitrocellulose (B) Polylactic acid (C) Hydroxypropyl methylcellulose (D) Cellulose acetate phthalate
Last Answer : (A) Nitrocellulose
Description : Which of the following is a detergent? (A) Benzene hexachloride (B) Alkyl benzene sulphonate (C) Polytetrafluoroethylene (D) Cellulose nitrate
Last Answer : (B) Alkyl benzene sulphonate
Description : Which of the following is an explosive? (A) Nitro-glycerine (B) Trinitrotoluene (TNT) (C) Cellulose nitrate (D) All (A), (B), and (C)
Last Answer : (D) All (A), (B), and (C)
Description : The first plastic was a mixture of cellulose nitrate and camphor invented in the 1860's by John Hyatt. What was the trademark given to this material?
Last Answer : ANSWER: CELLULOID
Description : Molecular sieves are regenerated by heating to __________ °C. (A) < 150 (B) 200-330 (C) > 500 (D) > 1000
Last Answer : (B) 200-330
Description : Zeolite used in water softening process (cation exchange) is regenerated by washing with (A) Brine (B) Chloramines (C) Sodium bisulphite (D) Liquid chlorines
Last Answer : (A) Brine
Description : Anion exchanger is regenerated usually with (A) NaOH (B) H2SO4 (C) Hydrazine (D) Alum solution
Last Answer : (A) NaOH
Description : Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of (A) Calcium sulphate (B) Sodium chloride (C) Sodium sulphate (D) Magnesium chloride
Last Answer : (B) Sodium chloride
Description : Cation exchanger is regenerated usually with (A) NaOH (B) H2SO4 (C) Hydrazine (D) Alum solution
Last Answer : (B) H2SO4
Description : A selectable marker is used to (a) help in eliminating the non-transformants, so that the transformants can be regenerated (b) identify the gene for a desired trait in an alien organism (c) ... in a specific crop (d) mark a gene on a chromosome for isolation using restriction enzyme.
Last Answer : (a) help in eliminating the non-transformants, so that the transformants can be regenerated
Description : Rhodopsin: a. is a red pigment b. is least sensitive to red light c. is regenerated when the eyes are closed d. all above
Last Answer : all above
Description : Who invented viscose?
Last Answer : Sir Isaac newton who originated the concept of viscosity and isoften called Non- Newtonian fluid mechanics.
Description : Which of the following family does the weed Grass belongs to? A. Poaceae B. Cyperaceae C. Crotalaria verrucose D. Indigofera viscose
Last Answer : A. Poaceae
Description : Rayon is a __________ fibre. (A) Cellulosic (B) Polyamide (C) Polyester (D) Natural
Last Answer : (A) Cellulosic
Description : Polycaprolactam is (A) Nylon-6 (B) Nylon-66 (C) Dacron (D) Rayon
Last Answer : (A) Nylon-6
Description : __________ fibres are made of polyamides. (A) Dacron (B) Nylon (C) Rayon (D) Orion
Last Answer : (B) Nylon
Description : 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)
Last Answer : (B) Does not stick to the wound unlike cotton
Description : Polycaprolactam is commercially known as (A) Nylon-6 (B) Nylon-66 (C) Dacron (D) Rayon
Description : Can I get this polyester rayon blend to shrink in the wash?
Last Answer : answer:Polyestere does not shrink. Rayon usually shrinks like crazy. I have a feeling with that ratio the garment won't shrink much, not sure. Throw it in the dryer after you wash it, see what happens. ... a lot, deoending on the rayon, but I doubt that will be a problem with all that polyester.