Description : The basic chemical building block of natural rubber obtained from trees is – (1) Isoprene (2) Vinyl Chloride (3) Acetylene (4) Neoprene
Last Answer : (1) Isoprene Explanation: Isoprene was first isolated by thermal decomposition of natural rubber. About 95% of isoprene production is used to produce cis-1,4- polyisoprene---a synthetic version of natural ... consists mainly of poly-cis-isoprene with a molecular weight of 100,000 to 1,000,000.
Description : The basic chemical building block of natural rubber obtained from trees is (1) Isoprene (2)Vinyl Chloride (3) Acetylene (4)Neoprene
Last Answer : Isoprene
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 : 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 : Synthetic rubber (Neoprene) is:
Last Answer : Synthetic rubber (Neoprene) is: A. polyster B. polyamide C. polysaccharide D. Polyhalodiene
Description : Neoprene is a (A) Monomer (B) Synthetic rubber (C) Polyester (D) None of these
Last Answer : (B) Synthetic rubber
Description : Neoprene is a polymer of the following monomer (a) Chloroprene (b) Isoprene (c) Isobutane (d) Isopentene
Last Answer : Chloroprene
Description : The monomer for Neoprene is (a) Isoprene (b) acrylonitrile (c) Chloroprene (d) 1,3-butadiene
Description : Natural rubber is a polymer derived from? (1) ethylene (2) propylene (3) isoprene (4) butadiene
Last Answer : (3) isoprene Explanation: Natural rubber is an addition polymer that is obtained as a milky white fluid known as latex from a tropical rubber tree.
Description : Natural rubber is a polymer of – (1) Vinyl acetate (2) Propene (3) Isoprene (4) Styrene
Last Answer : (3) Isoprene Explanation: Natural rubber consists of suitable polymers of the organic compound isoprene, with minor impurities of other organic compounds plus water. Isoprene is produced and emitted by ... trees into the atmosphere (major producers are oaks, poplars, eucalyptus, and some legumes).
Description : Natural rubber is the polymer of : (1) Isoprene (2) Styrene (3) Butadiene (4) Ethylene
Last Answer : (1) Isoprene Explanation: Isoprene was first isolated by thermal decomposition of natural rubber. About 95% of isoprene production is used to produce cis-1,4- polyisoprene—a synthetic version of natural rubber.
Description : Natural rubber is a polymer derived from - (1) ethylene (2) propylene (3) isoprene (4) butadiene
Description : Which of the following statements is not true? (a) Natural rubber is a hydrocarbon. (b) Natural rubber is made of isoprene units (c) Natural rubber is a polymer of 1,3-Butadiene (d) Natural rubber can be vulcanized.
Last Answer : Natural rubber is a polymer of 1,3-Butadiene
Description : Natural rubber is a polymer of (a) Propene (b) Isoprene (c) Formaldehyde (d) Phenol
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 : Why is Neoprene rubber non –inflammable ?
Last Answer : A. Due to presence of chloro group .
Description : What is Neoprene rubber?
Last Answer : A.2-Chlorobut -1,3-diene
Description : The monomer of natural rubber is (A) DMT (B) Isoprene (C) 2 methyl-1 propane (D) Both (B) and (C
Last Answer : (D) Both (B) and (C
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 : Styrene Butadiene Rubber; Neoprene; Thiokole are the examples of?
Last Answer : Synthetic rubber
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 : 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 produced by polymerisation of chloroprene. (A) Thiokol (a polysulphide rubber) (B) Butyl rubber (C) Neoprene (D) Polyurethane rubber
Last Answer : (C) Neoprene
Description : Buna-N is also called (A) Butyl rubber (B) Nitrile rubber (C) Neoprene (D) Thiokol
Last Answer : (B) Nitrile rubber
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 : Why neoprene rubber bellows are used in IPBD?
Last Answer : Neoprene rubber bellows are used near the terminals of the equipment and also at building wall from indoor to outdoor area to allow thermal expansion and to minimise vibrations.
Description : Why neoprene rubber bellows in generator IPBD?
Last Answer : Prevent vibrations transmitted from generator to IPBD.
Description : where springs of low damping are required for the purpose of vibration isolation, it will be most desirable to use A) Metallic springs B) Rubber pad C) Air springs D) Neoprene pads
Last Answer : A) Metallic springs
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 : __________ 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 : Synthetic polymer which resembler natural rubber is:
Last Answer : Synthetic polymer which resembler natural rubber is: A. neoprene B. chloroprene C. glyptal D. nylon
Description : What Synthetic rubber has different monomers than natural rubber.?
Last Answer : synthetic rubber has different monomers than natural rubber.
Description : Which is the World’s largest synthetic rubber and tyre making centre?
Last Answer : Akron
Description : First synthetic rubber?
Last Answer : Neoprene
Description : Synthetic rubber (A) Deforms, if stretched to double of its original dimension (B) Is brittle at low temperature (C) Is softer at higher temperature (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases
Last Answer : (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases
Description : Which of the following is generally not used as eord for synthetic rubber tyre casing? (A) Dacron (B) Nylon (C) Cellulose (D) None of these
Last Answer : (C) Cellulose
Description : The main use of butadiene is (A) As a plasticiser for unsaturated polyester (B) In the manufacture of synthetic rubber (C) As an anti-skimming agent in paint (D) None of these
Last Answer : (B) In the manufacture of synthetic rubber
Description : Styrene butadiene rubber (SBR) is (A) A natural rubber (B) Another name of silicone rubber (C) A synthetic polymer (D) A synthetic monome
Last Answer : (C) A synthetic polymer
Description : Styrene butadiene rubber (SBR) is (A) A natural rubber (B) A synthetic polymer (C) A synthetic monomer (D) Another name of silicone rubber
Last Answer : (B) A synthetic polymer
Description : The major use of butadiene is (A) As a plasticiser for unsaturated polyester (B) In the manufacture of synthetic rubber (C) As an anti-skinning agent in paint (D) None of these
Description : Elastomeric bearings are made of natural or synthetic rubber of shore hardness of approximately. a) 30 to 40 b) 50 to 70* c) 40 to 50 d) 60 to 70
Last Answer : b) 50 to 70
Description : Name any four synthetic rubber.
Last Answer : 1. Butyl rubber 2. Buna N 3. Buna S 4. Thikol 5. Neoprene
Description : Distinguish between natural rubber and synthetic rubber.
Last Answer : Natural rubber Synthetic rubber 1. It is an elastic material obtained from a milky emulsion (latex) of rubber trees. 1. It is a rubber-like product obtained by some chemical reaction. 2. It ... organic solvents. 7. It is plastic in nature. 7. It is elastic in nature.
Description : How many isoprene units are present in sesquiterpenes? (a) 1 (b) 2 (c) 3 (d) 4
Last Answer : 3