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 : 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 : Corrosion in Steel girder bridges may be prevented by : a) Protective coatings by painting b) Metallising c) Use of epoxy based paints d) All the above*
Last Answer : d) All the above*
Description : Polyhexamethylene adipamide is also known as (A) Bakelite (B) Nylon-66 (C) Epoxy resin (D) Silicone rubber
Last Answer : (B) Nylon-66
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 : 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
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 : __________ scrap can be recycled & reutilised. (A) Bakelite (B) Epoxy resin (C) Polythene (D) None of these
Last Answer : (C) Polythene
Description : Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces (A) Epoxy resin (B) Polyamide (C) Alkyd resin (D) Phenolic resin
Last Answer : (C) Alkyd resin
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 : 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 : __________ practically possess no elasticity. (A) Vulcanite or ebonite (B) Spandex fibre (C) Polysulphide rubber (D) Epoxy resin
Last Answer : (A) Vulcanite or ebonite
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 : In joints of precast concrete bridge segments, what are the functions of applying epoxy adhesive?
Last Answer : Epoxy adhesive is applied in these joints for the following purposes according to International Road Federation (1977): (i) It seals up the joints completely between precast concrete segments to protect the ... in transferring of shear between the joints in case a large single shear key is used.
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 : Nylon-6 is a (A) Polyamide (B) Thermosetting resin (C) Polyester (D) None of these
Last Answer : (A) Polyamide
Description : Alkyd resin is a/an (A) Polyamide (B) Polyester (C) Polyolefin (D) Addition polymer
Last Answer : (B) Polyester
Description : The most commonly used resin for making reinforced plastic is (A) Unsaturated polyester (B) Polypropylene
Last Answer : (A) Unsaturated polyester
Description : Phenol formaldehyde resin is used as an adhesive in making (A) Laminates (B) Card boxes (C) Furniture (D) Books
Last Answer : (A) Laminates
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 : Water drops cannot stick to the oily surface due to – (1) lack of adhesive force (2) surface tension (3) cannot mix each other (4) water is lighter than oil
Last Answer : (2) surface tension Explanation: The separation of oil and water is caused due to the difference in surface tension of the two liquids. The water molecules stick together tightly and does not mix ... to each other very strongly, forming an invisible "skin" of surface tension around each drop.
Description : Water drops cannot stick to the oily surface due to (1) lack of adhesive force (2) surface tension (3) cannot mix each other (4) water is lighter than oil
Last Answer : surface tension
Description : Polyurethane cannot be used to make (A) Automobile cushion (B) Thermal insulation in refrigerator (C) Coating and adhesive (D) Fibre reinforced plastic (FRP)
Last Answer : (D) Fibre reinforced plastic (FRP)
Description : Silicone resins, which are highly water repellent and has good heat resistance cannot be used (A) As room temperature adhesive (B) As grease & lubricant
Last Answer : (A) As room temperature adhesive
Description : Are EPDM coatings suitable for potable water?
Last Answer : EPDM Liquid Rubber can be applied to following substrates . For further information feel confident to contact us at call: 855-281-0940. Our experts are always willing to help.
Description : Add New Life to Concrete with Garage Floor Coatings?
Last Answer : Garage floor coatings are excellent ways to protect the concretefloor in a garage, a driveway, a concrete patio slab, or even aconcrete floor in home. These garage floor coatings can be appliedby ... are using themto improve the look and longevity of their concrete flooring.Some people choose a soli
Description : What are roof coatings Are they hard to use?
Last Answer : RV Roof Coating is a kind of protective layer that keeps your RV roof rejuvenated and waterproof. Coating like RV Roof Magic saves your RV from getting damaged by the sun’s UV rays as well as rainfall and debris, without peeling off like other ordinary coatings.
Description : Unnecessary and frequent applications of varnish to the generator windings to repair defective insulation will result in ____________. A. heavy coatings of varnish interfering with heat dissipation B. ... of the rectifier assembly D. a built-up of varnish without changing generator operation
Last Answer : Answer: A
Description : Grease coatings on electrical contact surfaces increase contact resistance and should be removed with a/an _______________. A. small wire brush B. compressed air jet C. clean dry cloth D. 10% solution carbon solvent and water
Last Answer : Answer: C
Description : A student has been collecting silver coins and copper coins. One day she observes a black coating on silver coins and a green coating on copper coins. Which chemical phenomenon is responsible for these coatings? Write the names of black and green coatings.
Last Answer : The phenomenon is called corrosion. Silver gets tarnished when exposed to atmosphere which forms a black coating of silver oxide. Copper forms a green deposit on its surface when exposed to moist air. The green coating is copper sulphate.
Description : Which 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 : 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 : 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 : 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 : 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 : Which one of the following is not an elastomer? (A) Polyisoprene (B) Neoprene (C) Nitrile-butadiene (D) None of these
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 : Bakelite (phenol-formaldehyde) resin cannot be used as (A) Decorative paint (B) Decorative laminates (C) Electrical insulation (D) Glass reinforced plastics
Last Answer : (A) Decorative paint
Description : Alkyd resin cannot be used for making (A) Plasticiser (B) Paint & varnish (C) Fibres (D) Film forming materials
Last Answer : (C) Fibres
Description : Pick out the wrong statement. (A) Surface tension of a liquid is because of the difference in magnitude of adhesive & cohesive forces (B) A hydrometer used for the determination of ... Turbulent fluid flow is characterised by the rapid fluctuation of instantaneous pressure & velocity at a poin
Last Answer : (C) In case of unsteady fluid flow, the velocity at any given point does not change with time
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 : 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%.