Description : Which one of the following is not an elastomer? (A) Polyisoprene (B) Neoprene (C) Nitrile-butadiene (D) None of these
Last Answer : (D) None of these
Description : __________ rubber is generally used for making 'O' rings used for vacuum sealings. (A) Natural (B) Neoprene (C) Butadiene (D) Nitrile
Last Answer : (B) Neoprene
Description : Trade name of __________ is neoprene. (A) Polychlorophrene (B) Polyisoprene
Last Answer : (A) Polychlorophrene
Description : Identify the group in which all the polymers mentioned can be used to make fibres. (A) Butadiene copolymers, Polyamides, Urea-formaldehyde (B) Cellulose derivatives, Polyisoprene, Polyethylene (C) Cellulose derivatives, Polyamides, Polyurethane (D) Polypropylene, Poly vinyl chloride, Silicon
Last Answer : (B) Cellulose derivatives, Polyisoprene, Polyethylene
Description : Tubeless tyres are made of __________ rubber, which is a co-polymer of isoprene & isobutylene. (A) Nitrile (B) Silicone (C) Neoprene (D) Buty
Last Answer : (D) Buty
Description : Buna-N is also called (A) Butyl rubber (B) Nitrile rubber (C) Neoprene (D) Thiokol
Last Answer : (B) Nitrile rubber
Description : Nitrile rubber is produced by the polymerisation of (A) Acrylonitrile & butadiene (B) Acrylonitrile & styrene (C) Isobutylene & isoprene (D) None of these
Last Answer : (A) Acrylonitrile & butadiene
Description : Nitrile rubber is produced by the polymerisation of (A) Acrylonitrile and butadiene (B) Acrylonitrile and styrene (C) Isobutylene and isoprene (D) None of these
Last Answer : (A) Acrylonitrile and butadiene
Description : Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitrile copolymer with butadiene based elastomer, is a/an (A) Rigid foam (B) Engineering plastic (C) Thermosetting polymer
Last Answer : (B) Engineering plastic
Description : __________ is a copolymer. (A) Styrene butadiene rubber (SBR) (B) Neoprene (C) PVC (D) None of these
Last Answer : (A) Styrene butadiene rubber (SBR
Description : Neoprene is chemically known as (A) Polybutadiene (B) Styrene butadiene rubber (SBR) (C) Polyurethane (D) Poly chloroprene
Last Answer : (D) Poly chloroprene
Description : Neoprene is the trade name of (A) Polyurethane (B) Phenol formaldehyde (C) Polychlorophrene (D) Styrene butadiene rubber (SBR)
Last Answer : (C) Polychlorophrene
Description : Neoprene is the trade name of (A) Polyurethane (B) Phenol formaldehyde (C) Polychlorophrene (D) Styrene-butadiene rubber
Description : Neoprene is chemically known as (A) Polybutadiene (B) Styrene butadiene rubber (SBR) (C) Polyurethane (D) Polychlorophrene
Last Answer : (D) Polychlorophrene
Description : Styrene Butadiene Rubber; Neoprene; Thiokole are the examples of?
Last Answer : Synthetic rubber
Description : The monomer for Neoprene is (a) Isoprene (b) acrylonitrile (c) Chloroprene (d) 1,3-butadiene
Last Answer : Chloroprene
Description : Which of the following is not a natural polymer? (A) Nucleic acids e.g. RNA and DNA (B) Polysaccharides (C) Polyisoprene (D) Polyurethane
Last Answer : (D) Polyurethane
Description : Main constituent of natural rubber is (A) Polystyrene (B) Polyisoprene (C) Polybutadiene (D) Poly chloroprene
Last Answer : (B) Polyisoprene
Description : Which of the following has the weakest intermolecular forces? (A) Polyisoprene (B) Nylon-66 (C) Polystyrene (D) Bakelite
Last Answer : (A) Polyisoprene
Description : Main constituents of natural rubber is (A) Polystyrene (B) Polyisoprene (C) Polybutadiene (D) Polychlorophrene
Description : Which of the following rubbers has the widest service temperature range (-75 to 275°C)? (A) Butyl rubber (B) Silicon rubber (C) Nitrile rubber (D) Silicone rubber
Last Answer : (D) Silicone rubber
Description : 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
Last Answer : (B) Magnitude of intermolecular forces
Description : Epoxy resin is (A) Not used for surface coating (B) A good abrasive (C) An elastomer (D) A polyester
Last Answer : (B) A good abrasive
Description : Which of the following is an elastomer? (A) Thiokol (B) Phenol formaldehyde (C) Urea formaldehyde (D) Polystyrene
Last Answer : (A) Thiokol
Description : Bakelite is a/an (A) Addition polymer (B) Elastomer (C) Thermoplastic (D) None of these
Description : Epoxy resin is a polymer containing two or more groups of the bellow fig. is called epoxide group or ethoxyline group. It is a (A) Polyamide & an elastomer (B) Good adhesive (C) Surface coating agent (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : Perspex is nothing but (A) Acrylic sheet (B) An elastomer (C) An alloy of lead and tin (D) Aluminium foil clad with Bakelite
Last Answer : (A) Acrylic sheet
Description : Epoxy resin (A) Is a good adhesive (B) Is an elastomer (C) Cannot be used for surface coatings (D) Is a polyester
Last Answer : (A) Is a good adhesive
Description : polymer is termed as an 'elastomer', if its percentage elongation is more than 100%. An elastomer is termed as 'rubber' if its percentage elongation is more than __________ percent. (A) 150 (B) 200 (C) 300 (D) 400
Last Answer : Option B
Description : A nitrile X is treated with `LiAIH_(4)` to obtain compound `Y(C_(2)H_(9)N)` reacts with benzensulfonyl chloride to give `Y(C_(13)H_(13)NO_(2)S)` which
Last Answer : A nitrile X is treated with `LiAIH_(4)` to obtain compound `Y(C_(2)H_(9)N)` reacts with benzensulfonyl chloride ... (3)CH_2COO^(-))(CH_(3)NH_(3)^(+))`
Description : Who sells the cheapest nitrile gloves?
Last Answer : If you are looking online, try Amazon or eBay. If you wish to go to a store, try Wal-Mart/Walgreens/whatever giant store you have, they will probably have a decent price.
Description : Aniline reacts with nitrous acid at low temperatures to give (a) a N-nitrosoamine (b) a nitrile (c) a diazonium salt (d) a nitrite salt
Last Answer : a diazonium salt
Description : A nitrile can be made by dehydrating an amide. However, for this reaction to occur, the amide must be : (a) primary (b) secondary (c) tertiary (d) N-methylated
Last Answer : primary
Description : Which of the following statements is False about acetamide? (a) reacts with Br2/NaOH to form tertiary amine (b) undergoes acid-hydrolysis to form acetic acid (c) undergoes dehydration with P2O5 to form a nitrile (d) is a white crystalline solid, soluble in water
Last Answer : reacts with Br2/NaOH to form tertiary amine
Description : What is an elastomer?
Last Answer : What is an elastomer?
Description : An elastomer is a polymer when its percentage elongation rate is ?
Last Answer : Greater than 100%.
Description : An impression with elastomer in custom tray has been taken for crown preparation; it will be two days before the impression gets to the laboratory for construction of the crown. Which impression ... A. Polyether B. Thiokol or meraptan rubber C. Condensation silicone D. Vinyl polysiloxane
Last Answer : D. Vinyl polysiloxane
Description : 38. Which of the following statements is false? (1) Both starch and cellulose are polymers of glucose (2) Artificial silk is derived from cellulose (3) Nylon-66 is an example of elastomer (4) The repeat unit in natural rubber is isoprene
Last Answer : Nylon-66 is an example of elastomer
Description : Where is thermoplastic elastomer used?
Last Answer : Thermoplastic elastomers (thermoplastic elastomers, TPE) are widely used due to their unique properties in comparison with other plastics. They are soft, resilient and recoverable. An alternative was needed ... dried before processing. It is necessary that the moisture content does not exceed 0.1%.
Description : Rain coats are made of (A) Neoprene (B) PVC (C) Polyurethane (D) SBR
Last Answer : (B) PVC
Description : Pick out the wrong statement. (A) Polystyrene is a thermoplastic polymer (B) Protein is a natural polymer (C) Neoprene is a natural rubber (D) Polythene is a copolymer, while SBR is a homopolymer
Last Answer : (C) Neoprene is a natural rubber
Description : __________ is a homopolymer. (A) Neoprene (B) Bakelite (C) Nylon-66 (D) Terylene
Last Answer : (A) Neoprene
Description : Neoprene is a (A) Monomer (B) Synthetic rubber (C) Polyester (D) None of these
Last Answer : (B) Synthetic rubber
Description : __________ is produced by polymerisation of chloroprene. (A) Thiokol (a polysulphide rubber) (B) Butyl rubber (C) Neoprene (D) Polyurethane rubber
Last Answer : (C) Neoprene
Description : Which of the following is not a polyolefin? (A) Polystyrene (B) Polypropylene (C) Neoprene (D) None of these
Description : Neoprene is rendered non-inflammable, because of (A) Its cross-linked structure (B) Its linear chain structure (C) The presence of chlorine atoms in its monomer (D) The absence of chlorine atoms in its monomer
Last Answer : (C) The presence of chlorine atoms in its monomer
Description : The monomer for the production of neoprene rubber is (A) Acetylene (B) Chloroprene (C) Isoprene (D) None of these
Last Answer : (B) Chloroprene
Description : Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is (A) Chloroethane (B) Chloroprene (C) Isoprene (D) None of these
Description : Caustic soda is transported in __________ lined containers. (A) Glass (B) Nickel (C) Neoprene (D) Either (B) or (C)
Last Answer : (D) Either (B) or (C)
Description : Isopropyl benzene produced by alkylation of benzene with propylene is known as (A) Neoprene (B) Cumene (C) Gelatin (D) Mercaptans
Last Answer : (B) Cumene