Description : Nylon-6,6 is obtained from : (a) Adipic acid and hexamethylene diamine (b) Tetrafluoroethylene (c) Vinyl cyanide (d) Vinylbenzene
Last Answer : Adipic acid and hexamethylene diamine
Description : Orlon is prepared by the polymerisation of (a) Vinyl cyanide (b) Allyl alcohol (c) Vinyl chloride (d) Allyl chloride
Last Answer : Vinyl cyanide
Description : PVC is formed by polymerization of - (1) Styrene (2) Acetylene (3) Propene (4) Vinyl Chloride
Last Answer : (4) Vinyl Chloride Explanation: Polyvinyl chloride is produced by polymerization of the vinyl chloride monomer (VCM). About 80% of production involves suspension polymerization.
Description : Which one of the following is used to make Teflon? (a) Fluoroethene (b) 1,1,4,4-tetrafluorobutadiene (c) 1,2-difluoroethene (d) Tetrafluoroethylene
Last Answer : Tetrafluoroethylene
Description : Perspex can be used as a substitute of glass. Its monomer is (A) Methyl methacrylate (B) DMT (C) Butadiene (D) Tetrafluoroethylene
Last Answer : (A) Methyl methacrylate
Description : For obtaining vinyl chloride acetate, the method used, is (A) Addition polymerization (B) Condensation polymerization (C) Co-polymerization (D) None of these
Last Answer : Answer: Option C
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 : Poly Tetrafluoroethylene (P.T.F.E.) is known as (A) Bakelite (B) Teflon (C) Celluloid (D) Dacron
Last Answer : (B) Teflon
Description : Propyne is formed by (a) Polymerization of acetylene (b) Reaction of acetylene with methane (c) Reaction of acetylene with methyl chloride (d) Reaction of sodium acetylide with methyl chloride
Last Answer : Reaction of sodium acetylide with methyl chloride
Last Answer : Acrylonitrile.
Description : Orion is (A) A copolymer (B) A condensation polymer (C) Obtained by polymerising vinyl cyanide (D) All (A), (B) and (C)
Last Answer : (C) Obtained by polymerising vinyl cyanide
Description : Which of the following does not give benzoic acid on hydrolysis? (1) phenyl cyanide (2) benzoyl chloride (3) benzyl chloride (4) methyl benzoate
Last Answer : (3) benzyl chloride Explanation: Hydrolysis is any chemical reaction in which a molecule of water ruptures one or more chemical bonds.
Description : Which of the following is produced when polyvinyl chloride is burned? w) Hydrogen Cyanide x) Hydrogen Chloride y) Nitrogen Oxide z) Oxygen
Last Answer : ANSWER: X -- HYDROGEN CHLORIDE
Description : The Bhopal gas tragedy was caused by the gas (1) Methyl chloride (2) Methyl Iso Cyanide (3) Methyl Iso Cyanate (4) Methyl Cyanide
Last Answer : Methyl Iso Cyanate
Description : In the method of condensation polymerization, (A) Low-molecular substances are removed from the high molecular substance (B) The reaction proceeds with an evolution of ammonia (C) The reaction proceeds with an evolution of hydrogen chloride (D) All of the above
Last Answer : Answer: Option D
Description : What is the common name of the substance which is inert to nearly all chemicals and is a polymer of tetrafluoroethylene?
Last Answer : ANSWER: TEFLON
Description : Ethyl alcohol is commonly made unfit for drinking by the addition of (a) potassium cyanide (b) methyl alcohol (c) chloroform (d) potassium chloride
Last Answer : Ans:(b)
Description : PVC is obtained by the polymerisation of – (1) Propane (2) Vinyl chloride (3) Styrene (4) Acetylene
Last Answer : (2) Vinyl chloride Explanation: Polyvinyl chloride is produced by polymerization of the monomer vinyl chloride (17CM). Polyvinyl chloride, commonly abbreviated PVC, is the third-most widely produced ... it is cheaper and stronger than more traditional alternatives such as copper or ductile iron.
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 : Which of the following compounds will give a white precipitate with alcoholic AgNO3? (a) Vinylbenzene (b) Chlorobenzene (c) Vinyl chloride (d) Allyl chloride
Last Answer : Allyl chloride
Description : 1,2-Dichloroethane reacts with excess of NaNH2 to form (a) Vinyl chloride (b) Ethylene (c) Ethyl chloride (d) Acetylene
Last Answer : Acetylene
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 : PVC is obtained by the polymerisation of (1) Propane (2) Vinyl chloride (3) Styrene (4) Acetylene
Last Answer : Vinyl chloride
Description : __________ is a thermosetting plastic. (A) Polyvinyl chloride (B) Polythene (C) Bakelite (D) Teflon
Last Answer : (C) Bakelite
Description : The plastics prepared from Vinyl resin are (A) Odourless (B) Non-toxic (C) Transparent (D) All of these
Last Answer : civil-engineering
Description : (A) Ethyl chloride is more reactive than vinyl chloride towards nucleophilic substitution reactions. (R) Vinyl chloride is `+I` electron pushing group
Last Answer : (A) Ethyl chloride is more reactive than vinyl chloride towards nucleophilic substitution reactions. (R) Vinyl ... A) is incorrect but (R) is correct.
Description : Synthetic human hair wigs are made from a copolymer of vinyl chloride and acrylonitrile, and is called:
Last Answer : Synthetic human hair wigs are made from a copolymer of vinyl chloride and acrylonitrile, and is ... PVC B. polyacrylonitrile C. cellulose D. dynel
Description : Nylon-66 is a polyamide of (A) Hexamethylene diamine and adipic acid (B) Adipic acid and methyl amine (C) Vinyl chloride and formaldehyde (D) None of these
Last Answer : (A) Hexamethylene diamine and adipic acid
Description : Thermal pyrolysis of ethylene dichloride produces (A) Trichloroethylene (B) Vinyl chloride (C) Ethanol amine (D) Ethylene oxid
Last Answer : (B) Vinyl chloride
Description : Zeigler - Natta catalyst (AlR3 - AlCl3 ) is used in the polymerisation of (A) Vinyl acetate (B) Vinyl chloride (C) Propylene (D) Styrene
Last Answer : (C) Propylene
Description : Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800? (A) 50000 (B) 51600 (C) 49200 (D) 50800
Last Answer : (A) 50000
Description : Poly Vinyl chloride (PVC) is a __________ material. (A) Thermoplastic (B) Thermosetting (C) Fibrous (D) Chemically active
Last Answer : (A) Thermoplastic
Description : Benzoyl chloride is not used as a catalyst in the manufacture of (A) Polystyrene (B) Polyvinyl acetate (C) Polypropylene (D) Polyvinyl chloride-co-vinyl acetate
Last Answer : (C) Polypropylene
Description : __________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate. (A) Fibrous (B) Leathery (C) Rubbery (D) Hard
Last Answer : (B) Leathery
Description : The monomer of poly vinyl chloride (PVC) is (A) Chloroethane (B) Ethylene dichloride (C) Ethyl chloride (D) Chloroform
Last Answer : (A) Chloroethane
Description : A copolymer of vinyl and vinylidene chloride is called (A) Treylene (B) Orlon (C) Saran (D) Dacron
Last Answer : (C) Saran
Description : Addition polymerisation is not involved in the manufacture of (A) Low density polythene (B) Poly vinyl chloride (C) Polystyrene (D) Polyhexamethylene adipamide
Last Answer : (D) Polyhexamethylene adipamide
Description : Which of the following is produced by condensation polymerisation? (A) Bakelite (B) Polythene (C) Poly vinyl chloride (D) Polystyrene
Last Answer : (A) Bakelite
Description : Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid. (A) Phthalic anhydride (B) Vinyl chloride (C) Maleic anhydride (D) Dacron
Description : Vinyl chloride (CH2 = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of (A) 4 kgf/cm2 & 500°C (B) 10 kgf/cm2 & 1000°C (C) 40 kg/cm2 & 200°C (D) 100 kgf/cm2 & 500°C
Last Answer : (A) 4 kgf/cm2 & 500°C
Description : Thermal pyrolysis of ethylene dichloride produces (A) Trichloroethylene (B) Vinyl chloride (C) Ethanol amine (D) Ethylene oxide
Description : Poly Vinyl Chloride (P.V.C.) is a __________ material. (A) Thermosetting (B) Thermoplastic (C) Fibrous (D) Chemically active
Last Answer : (B) Thermoplastic
Description : __________ is produced using Polycondensation reaction. (A) Polythene (B) Phenol formaldehyde (C) Poly vinyl chloride (D) None of these
Last Answer : (B) Phenol formaldehyde
Description : PVC stands for (A) Plastic very compact (B) Polythene vinyl chloride (C) Polythene vinyl carbon (D) Polythene vanadium carbide
Last Answer : Answer: Option B
Description : Iodobenzene can be prepared by (a) treating chlorobenzene with I2 using FeCl3 catalyst. (b) treating phenol with I2 in NaOH solution. (c) treating benzenediazonium chloride with KI (d) treating benzene with CH3I using AlCl3 catalyst
Last Answer : treating benzenediazonium chloride with KI
Description : Chlorobenzene can be prepared by treatment of aniline with (a) Cuprous chloride (b) Chlorine in the presence of UV light (c) Nitrous acid followed by treatment with CuCl (d) Chlorine in the presence of FeCl3
Last Answer : Nitrous acid followed by treatment with CuCl
Description : Which of the following statements is false about toluene? (a) can be prepared by treating benzene with methyl chloride in the presence of AlCl3. (b) is converted to benzoic acid on refluxing with ... (d) can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene.
Last Answer : can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene
Description : What is polymerization ?
Last Answer : Answer : The Greek word poly means many and meros means part or unit . Thus polymerization is the process of creating large molecules from six single molecules. That is, a reaction in which a ... the presence of little oxygen, polythene is produced by the addition of 600 - 1000 ethin molecules.
Description : What is a polymerization reaction ?
Last Answer : In polymer chemistry, the process of forming large molecules by combining numerous molecules of the same substance or numerous molecules of more than one substance is called polymerization reaction .
Description : Why should one always use purest monomer in free radical polymerization?
Last Answer : Ans: The impurities present in monomer may combine with free radical that slow the rate of polymerization.