Description : Which of the following polymers shows the highest anti-tacking properties? (A) Melamine formaldehyde resin (B) Phenolic resin (C) Epoxy resin (D) Alkyd resin
Last Answer : (A) Melamine formaldehyde resin
Description : __________ are produced by reacting polybasic acid (e.g. Phthalic anhydride) with polyhydric alcohol (e.g., glycerol). (A) Unsaturated polyester (B) Alkyd resins (C) Saturated polyester (D) Amino resins
Last Answer : (B) Alkyd resins
Description : Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but (A) Polyacrylonitrile (B) Polyamide (C) Saturated polyester (D) Alkyd resin
Last Answer : (A) Polyacrylonitrile
Description : __________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine. (A) Epoxy (B) Amino (C) Alkyd (D) Phenolic
Last Answer : (B) Amino
Description : Alkyd resin is a/an (A) Polyamide (B) Polyester (C) Polyolefin (D) Addition polymer
Last Answer : (B) Polyester
Description : Cation exchange resins used in water treatment is made from __________ resin. (A) Urea formaldehyde (B) Epoxy (C) Amino (D) Phenolic
Last Answer : (A) Urea formaldehyde
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 : Polycondensation reaction of polymerisation (A) Does not produce linear polymers (B) Produces only thermoplastic material (C) Produces epoxy polymers (D) Does not need any catalyst
Last Answer : (C) Produces epoxy polymers
Description : Alkyd resin cannot be used for making (A) Plasticiser (B) Paint & varnish (C) Fibres (D) Film forming materials
Last Answer : (C) Fibres
Description : Alkyd resin e.g., glyptal resin formed by Phthalic anhydride and glycerine is not used (A) For surface coating of automobiles & air crafts (B) For fibre making (C) As plasticiser for PVC & nitrocellulose (D) For film forming materials
Last Answer : (B) For fibre making
Description : Polyesters are manufactured by the Polycondensation reaction of (A) Dibasic acid with dihydric alcohol (B) A single monomer (C) Carboxylic acid with ethylene
Last Answer : (A) Dibasic acid with dihydric alcohol
Description : Which of the following is a polymer of Hexamethylene diamine and adipic acid? (A) Nylon-6 (B) Nylon-66 (C) Nylon-6, 10 (D) Epoxy resin
Last Answer : (B) Nylon-66
Description : Acrylic is the name of (A) Cellulose resin (B) Alkyd resin (C) Methyl methacrylate (D) Cumarone-indene
Last Answer : Answer: Option C
Description : Condensation polymerisation of formaldehyde with __________ does not produce phenolic resin. (A) Resorcinol (B) Phenol (C) Para-cresol (D) Melamine
Last Answer : (D) Melamine
Description : Nylon-6 is a (A) Polyamide (B) Thermosetting resin (C) Polyester (D) None of these
Last Answer : (A) Polyamide
Description : Pick up the synthetic resin from the following: (A) Urea resin (B) Phenolic resin (C) Resorcinol resin (D) All of these
Last Answer : Answer: Option D
Description : Polyhexamethylene adipamide is also known as (A) Bakelite (B) Nylon-66 (C) Epoxy resin (D) Silicone rubber
Description : Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation (A) PVC (B) Bakelite (C) PTFE (D) Epoxy resin
Last Answer : (A) PVC
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 : __________ scrap can be recycled & reutilised. (A) Bakelite (B) Epoxy resin (C) Polythene (D) None of these
Last Answer : (C) Polythene
Description : Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E. (poly chloro tetra fluoro ethylene). It is also called (A) Polyurethane (B) Silicone rubber (C) Teflon (D) Epoxy resin
Last Answer : (C) Teflon
Description : __________ practically possess no elasticity. (A) Vulcanite or ebonite (B) Spandex fibre (C) Polysulphide rubber (D) Epoxy resin
Last Answer : (A) Vulcanite or ebonite
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 : Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E (poly chloro tetra fluoro ethylene). It is also called (A) Polyurethane (B) Silicone (C) Teflon (D) Epoxy resin
Description : Which of the following is generally not drawn into fibre? (A) Polyamide (B) Unsaturated polyesters (C) Saturated polyesters (D) Polyacrylonitrile
Last Answer : (B) Unsaturated polyesters
Description : Is it possible to treat a stretchered canvas with polyurethane, epoxy resin or some such, to make it waterproof enough to hang over the bathroom shower?
Last Answer : answer:If you put on enough coats to be certain that there weren't any untreated areas, no matter how small, I don't see why not. Isn't this what they do with fiberglass coatings to make ... to boating people and ask them what they would recommend. Is this an Acrylic painting you're talking about?
Description : What do you think about my using epoxy resin coating and flooring in all areas of my home and office, and why?
Last Answer : If the epoxy resin coating works well and safely, it should be fine. As long as the walls won't fall apart or aren't 'peeling' away. But check out the ingredients/chemical fumes of the epoxy that might affect your health. Open the windows at all times.
Description : Are epoxy resin countertops scratch proof?
Last Answer : Epoxy resin can be used as a sealant on counter tops to help make them resistant to scratches. There are no countertops made of epoxy resin
Description : What are the advantages of epoxy resin as a fixative?
Last Answer : Expoxy resin is very stable and that is exactly what you need in a goo fixative. The last thing you need is an unstable mix of chemicals,that can end in disaster. The advantages of epoxy ... it is durable, long-lasting, and inexpensive. Epoxy resin also resists cracking, unlike many older adhesives.
Description : Write the properties and applications of epoxy resin.
Last Answer : Properties: i) They have good chemical resistance. ii) They have low shrinkage during curing. iii) They possess good electrical resistance. iv) These compounds can be used in solid and ... to their electrical resistance they are widely used in making insulators, bushings etc. for high voltage.
Description : Epoxy resin transformers are more suitable in hazardous areas. Give reason.
Last Answer : Reason for Epoxy resin transformers are more suitable in hazardous areas : 1. Core used is of CRGO M4-M3 circular size, minimizes leakage reactance and hence core losses will be less. 2. Winding ... of oil there is no need of testing the dielectric strength of oil or no filtration of oil.
Description : `P` and `Q` are isomers of dicarboxylic acid `C_(4)H_(4)O_(4)`. Bothdecolorize `Br_(2)//H_(2)O`. On heating, `P` forms the cyclic anhydride. Upon trea
Last Answer : `P` and `Q` are isomers of dicarboxylic acid `C_(4)H_(4)O_(4)`. Bothdecolorize `Br_(2)// ... . Optically inactive pair (T, U) and optically inactive S
Description : All of the following statements about aspartate are true except (A) It is non-essential amino acid (B) It is a dicarboxylic amino acid (C) It can be synthesized from pyruvate and glutamate (D) It can be converted into asparagine
Last Answer : Answer : C
Description : Which herbicide group is photosynthesis inhibitor? a). Nitriles b). Carbamate c). Dicarboxylic acid d). Dinitroanilines
Last Answer : a). Nitriles
Description : Carboxylic acid reacts with halogen in presence of red P to gives__________ a) α-halogen acids b) β-halogen acid c) Acid halide d) Dicarboxylic acid
Last Answer : a) α-halogen acids
Description : Polyvinyl chloride (PVC) (A) Is produced by Polycondensation reaction (B) Uses either emulsion or suspension polymerisation methods (C) Can be made thermosetting by adding a plasticiser (D) Softening temperature is 200°C
Last Answer : (B) Uses either emulsion or suspension polymerisation methods
Description : Wax is a (A) Mixture of glycerides (B) Mixture of esters of polyhydric alcohols excepting glycerine (C) Liquid at room temperature (D) Mixture of glycerides of fatty acids
Last Answer : (B) Mixture of esters of polyhydric alcohols excepting glycerine
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 : 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 : Aspartame is the name of a product used by diabetic patients as a sweetening agent. It belongs to the class of — (1) Carbohydrates (2) Peptides (3) Polyhydric alcohols (4) Alkaloids
Last Answer : (2) Peptides Explanation: Aspartame is an artificial, nonsaccharide sweetener used as a sugar substitute in some foods and beverages. It is a methyl ester of the aspartic acid/phenylalanine ... more severe conditions, the peptide bonds are also hydrolyzed, resulting in the free amino acids.
Description : Aspartame is the name of a product used by diabetic patients as a sweetening agent. It belongs to the class of— (1) Carbohydrates (2) Peptides (3) Polyhydric alcohols (4) Alkaloids
Last Answer : Peptides
Description : Which of the following is not an inhibitory substance governing seed dormancy? (a) Gibberellic acid (b) Abscisic acid (c) Phenolic acid (d) Para-ascorbic acid
Last Answer : a) Gibberellic acid
Description : Root exudates of wheat and oats which has detrimental effects on wild mustard con tain a). Phenolic acid b). Alkaloids c). Sulphides d). Lactones
Last Answer : a). Phenolic acid
Description : .Phenolic acid as root exudates of which crop has detrimental effects on wild mustard? a). Wheat b). Oats c). Chickpea d). a & b
Last Answer : d). a & b
Description : Maple syrup urine diseases is an inborn error of metabolism of (A) Sulphur-containing amino acids (B) Aromatic amino acids (C) Branched chain amino acids (D) Dicarboxylic amino acids
Description : Fatty acids are (a) Unsaturated dicarboxylic acids (b) Long-chain alkanoic acids (c) Aromatic carboxylic acids (d) Aromatic dicarboxylic acids
Last Answer : Long-chain alkanoic acids
Description : When carboxylic acids and dicarboxylic acids have similar molecular weights, how do their melting points compare? (a) Carboxylic acids have greater melting points. (b) Dicarboxylic acids have greater melting points. (c) Both acids have similar melting points. (d) No consistent trend exists
Last Answer : Dicarboxylic acids have greater melting points
Description : Structurally silk is (a) a polyamide (b) a polyester (c) an enzyme (d) a nucleic acid
Last Answer : Ans:(a)
Description : The effect of the temperature rising above 100ºC on heat-cured denture-base acrylic resins is: A. Produces porosity on the external portion of the resin. B. Produces porosity on the internal portion ... porosity on the surface of the resin. D. Prevents porosity on the interior of the resin
Last Answer : B. Produces porosity on the internal portion of the resin.