Description : Molasses a by-product in the manufacture of sugar, is converted into (1) alcohol (2) paper (3) fuel (4) pulp
Last Answer : alcohol
Description : In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of (A) Cross linked polystyrene (B) Phenol formaldehyde resins (C) Polyesters (D) Polyamides
Last Answer : (A) Cross linked polystyrene
Description : Catalytic oxidation-dehydrogenation of methyl alcohol produces (A) Formaldehyde (B) Phenol (C) Acetone (D) Maleic anhydride
Last Answer : (A) Formaldehyde
Description : Bisphenol A is produced by the condensation of acetone with (A) Formaldehyde (B) Ethyl alcohol (C) Diethyl ether (D) Phenol
Last Answer : (D) Phenol
Description : The process used for the manufacture of ethyl alcohol from molasses is (A) Distillation (B) Dehydration (C) Dehydrogenation (D) None of these
Last Answer : (D) None of these
Description : Ethyl alcohol cannot be produced (A) From waste sulphite substrate of paper mills (B) By Esterification and hydrolysis of ethylene (C) From molasses (D) None of these
Description : The product used for manufacturing of Industrial alcohol is- (1) Khandasari (2) Bagasse (3) Molasses (4) Paper-pulp
Last Answer : (3) Molasses Explanation: Molasses is a viscous by-product of the beating of sugarcane, grapes or sugar beets into sugar. Blackstrap molasses is a source of calcium, magnesium, potassium, and iron; ... It is used in the manufacture of ethyl alcohol for industry and as an ingredient in cattle feed.
Description : In India the problem of utilisation of agricultural wastes is in (a) Conversion of cellulose into sugar (b) Conversion of bran into molasses (c) Conversion of starch into alcohol (d) Conversion of sugar into carbohydrates
Last Answer : Ans: (a)
Description : Phenol formaldehyde (A) Employs addition polymerisation (B) Employs condensation polymerisation (C) Is a monomer
Last Answer : (B) Employs condensation polymerisation
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 : Phenol formaldehyde is produced by condensation polymerisation. It is also known as (A) Teflon (B) Bakelite (C) Polyester (D) Nylon-66
Last Answer : (B) Bakelite
Description : Which of the following is an elastomer? (A) Thiokol (B) Phenol formaldehyde (C) Urea formaldehyde (D) Polystyrene
Last Answer : (A) Thiokol
Description : In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a crosslinked polymer? (A) Bakelite (phenol formaldehyde) (B) Polyester (C) Polythene (D) Nylon-6
Last Answer : (A) Bakelite (phenol formaldehyde)
Description : Neoprene is the trade name of (A) Polyurethane (B) Phenol formaldehyde (C) Polychlorophrene (D) Styrene butadiene rubber (SBR)
Last Answer : (C) Polychlorophrene
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 : Teflon is (A) Phenol formaldehyde (B) An inorganic polymer (C) Polytetrafluroethylene (PTFE) (D) A monomer
Last Answer : (C) Polytetrafluroethylene (PTFE)
Description : Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins. (A) Epoxy (B) Phenol formaldehyde (C) Urea formaldehyde (D) Melamine formaldehyde
Last Answer : (C) Urea formaldehyde
Description : Condensation polymerisation of __________ produces Bakelite. (A) Propylene (B) Phenol & formaldehyde (C) Phenol & acetaldehyde (D) Urea & formaldehyde
Last Answer : (B) Phenol & formaldehyde
Description : Bakelite is (A) Same as Polytetrafluoroethylene (PTFE) (B) An inorganic polymer (C) Same as thermoset phenol formaldehyde (D) Not a polymer
Last Answer : (C) Same as thermoset phenol formaldehyde
Description : __________ is never shipped in glass carboys. (A) Ammonia (B) Acetic acid (C) Phenol (D) Formaldehyde
Last Answer : (A) Ammonia
Description : Which of the following is produced by addition polymerisation? (A) Polybutadiene (B) Phenol formaldehyde (C) Urea-formaldehyde (D) Dacron
Last Answer : (A) Polybutadiene
Description : Bakelite is (A) Same as Polytetrafluoroethylene (PTFE) (B) An inorganic polymer (C) Same as thermosetting phenol-formaldehyde (D) Not a polymer
Last Answer : (C) Same as thermosetting phenol-formaldehyde
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 : Bakelite is chemically known as (A) Polyvinyl chloride (PVC) (B) Polybutadiene (C) Phenol formaldehyde (D) Polyurethane
Last Answer : (C) Phenol formaldehyde
Description : Neoprene is the trade name of (A) Polyurethane (B) Phenol formaldehyde (C) Polychlorophrene (D) Styrene-butadiene rubber
Description : Teflon is (A) Phenol formaldehyde (B) An inorganic polymer (C) Poly tetra-fluoro-ethylene (P.T.F.E.) (D) A monomer
Last Answer : (C) Poly tetra-fluoro-ethylene (P.T.F.E.)
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 : Phenol formaldehyde (A) Employs addition polymerisation (B) Employs condensation polymerisation (C) Is a monomer (D) Is an abrasive material
Description : Window panes of aeroplanes are normally made of (A) Perspex (PMMA) (B) Teflon (PTFE) (C) Bakelite (phenol formaldehyde) (D) Polystyrene
Last Answer : Option A
Description : The bakelite is made from phenol and formaldehyde. The initial reaction between the two compounds is an exmaple of:
Last Answer : The bakelite is made from phenol and formaldehyde. The initial reaction between the two compounds is ... C. free radical reaction D. aldol reaction
Description : Bakelite is a copolymer of Phenol and - (1) Formaldehyde (2) Acetaldehyde (3) Benzaldehyde (4) Cinnaldehyde
Last Answer : (1) Formaldehyde Explanation: Bakelite is an early plastic. It is a thermosetting phenol formaldehyde resin, formed from an elimination reaction of phenol with formaldehyde.
Description : Write the polymer of phenol and formaldehyde that is used for making combs.
Last Answer : Ans: Bakelite, (a) Phenol (b) Formaldehyde
Description : Natural rubber is a polymer of (a) Propene (b) Isoprene (c) Formaldehyde (d) Phenol
Last Answer : Isoprene
Description : Bakelite is obtained from : (a) Phenol and formaldehyde (b) Adipic acid and hexamethylene diamine (c) Dimethyl terephthalate and ethylene glycol (d) Neoprene
Last Answer : Phenol and formaldehyde
Description : Bakelite has the following characteristics (a) A polymer made from phenol and formaldehyde (b) A thermosetting plastic (c) Can be used as an adhesive (d) All of the above
Last Answer : All of the above
Description : Pick up the non-inflammable plastic from the following: (A) Cellulose acetate plastics (B) Polyvinyl chloride plastics (C) Phenol formaldehyde plastic (D) Urea formaldehyde plastic
Last Answer : Answer: Option B
Description : Which one of the following polymers is obtained from condensation polymerization? (A) Phenol formaldehyde (B) Carbamide (C) Melamine-formaldehyde (D) All of these
Last Answer : Answer: Option D
Description : Pick up the correct statement from the following: (A) The phenol is carbolic acid (B) The phenol is either extracted from coal-tar or prepared from benzene (C) Phenol reacts with formaldehyde, to form phenol formaldehyde resin (D) All the above
Description : Phenol and Formaldehyde are polymerised to a resultant product known as (A) PVC. (B) bakelite. (C) polyester. (D) teflon.
Last Answer : (B) bakelite.
Description : Give the applications of phenol formaldehyde resin.
Last Answer : 1) For making electric insulator parts like switches, plugs, switchboards, heater-hands, sockets for light bulb, etc. and in wire insulation. 2) Used for making moulded articles like telephone parts, ... ) In paints and varnishes. 7) It is used as hydrogen- exchanger resin in water softening.
Description : Bakelite is a copolymer of Phenol and (1) Formaldehyde (2) Acetaldehyde (3) Benzaldehyde (4) Cinnaldehyde
Last Answer : Formaldehyde
Description : A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved ... Siloxane elastomers (B) Polyamides (C) Vinyl polymers (D) Urea-formaldehyde resins
Last Answer : (D) Urea-formaldehyde resins
Description : The fermented matter during the manufacture of molasses is called
Last Answer : wort.
Description : During the manufacture of molasses, it is acidified using
Last Answer : dilute sulphuric acid.
Description : The fermenter used for the production of ethyl alcohol from molasses is made of (A) Wood (B) Concrete (C) Copper bearing steel (D) Porcelain
Last Answer : (C) Copper bearing steel
Description : Alcohol percentage in molasses may be around (A) 10 (B) 40 (C) 70 (D) 85
Last Answer : (B) 40
Description : __________ is produced using molasses as the starting raw material. (A) Methyl alcohol (B) Ethyl alcohol (C) Benzol (D) Dimethyl ether
Last Answer : (B) Ethyl alcohol
Description : Production of alcohol by fermentation of molasses is a/an __________ process. (A) Anaerobic (B) Aerobic (C) Endothermic (D) Both (B) and (C)
Last Answer : (B) Aerobic
Description : Raw material used in alcohol distilleries in India is (A) Molasses (B) Benzol (C) Methylated spirit (D) None of these
Last Answer : (A) Molasses