Bakelite is a copolymer of Phenol and - (1) Formaldehyde (2) Acetaldehyde (3) Benzaldehyde (4) Cinnaldehyde

Bakelite is a copolymer of Phenol and - (1) Formaldehyde (2) Acetaldehyde (3) Benzaldehyde (4) Cinnaldehyde
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(1) Formaldehyde Explanation: Bakelite is an early plastic. It is a thermosetting phenol formaldehyde resin, formed from an elimination reaction of phenol with formaldehyde.
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Bakelite is a copolymer of Phenol and (1) Formaldehyde (2) Acetaldehyde (3) Benzaldehyde (4) Cinnaldehyde

Description : Bakelite is a copolymer of Phenol and (1) Formaldehyde (2) Acetaldehyde (3) Benzaldehyde (4) Cinnaldehyde

Last Answer : Formaldehyde

Condensation polymerisation of __________ produces Bakelite. (A) Propylene (B) Phenol & formaldehyde (C) Phenol & acetaldehyde (D) Urea & formaldehyde

Description : Condensation polymerisation of __________ produces Bakelite. (A) Propylene (B) Phenol & formaldehyde (C) Phenol & acetaldehyde (D) Urea & formaldehyde

Last Answer : (B) Phenol & formaldehyde

Cinnamaldehyde is prepared by the treatment of : (a) benzaldehyde with acetaldehyde in the presence of NaOH (b) benzaldehyde with formaldehyde in the presence of NaOH (c) benzophenone with acetaldehyde in the presence of NaOH (d) benzophenone with formaldehyde in the presence of NaOH

Description : Cinnamaldehyde is prepared by the treatment of : (a) benzaldehyde with acetaldehyde in the presence of NaOH (b) benzaldehyde with formaldehyde in the presence of NaOH (c) benzophenone with acetaldehyde in the presence of NaOH (d) benzophenone with formaldehyde in the presence of NaOH

Last Answer : benzaldehyde with acetaldehyde in the presence of NaOH

Cannizzaro reaction is not given by (a) Formaldehyde (b) Trimethylacetaldehyde (c) Acetaldehyde (d) Benzaldehyde

Description : Cannizzaro reaction is not given by (a) Formaldehyde (b) Trimethylacetaldehyde (c) Acetaldehyde (d) Benzaldehyde

Last Answer : Acetaldehyde

Bakelite is obtained from : (a) Phenol and formaldehyde (b) Adipic acid and hexamethylene diamine (c) Dimethyl terephthalate and ethylene glycol (d) Neoprene

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

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

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

The bakelite is made from phenol and formaldehyde. The initial reaction between the two compounds is an exmaple of:

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

Bakelite (phenol-formaldehyde) resin cannot be used as (A) Decorative paint (B) Decorative laminates (C) Electrical insulation (D) Glass reinforced plastics

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

Phenol formaldehyde is produced by condensation polymerisation. It is also known as (A) Teflon (B) Bakelite (C) Polyester (D) Nylon-66

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

In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross￾linked polymer? (A) Bakelite (phenol formaldehyde) (B) Polyester (C) Polythene (D) Nylon-6

Description : In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross￾linked polymer? (A) Bakelite (phenol formaldehyde) (B) Polyester (C) Polythene (D) Nylon-6

Last Answer : (A) Bakelite (phenol formaldehyde)

Bakelite is (A) Same as Polytetrafluoroethylene (PTFE) (B) An inorganic polymer (C) Same as thermoset phenol formaldehyde (D) Not a polymer

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

Bakelite is (A) Same as Polytetrafluoroethylene (PTFE) (B) An inorganic polymer (C) Same as thermosetting phenol-formaldehyde (D) Not a polymer

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

Bakelite is chemically known as (A) Polyvinyl chloride (PVC) (B) Polybutadiene (C) Phenol formaldehyde (D) Polyurethane

Description : Bakelite is chemically known as (A) Polyvinyl chloride (PVC) (B) Polybutadiene (C) Phenol formaldehyde (D) Polyurethane

Last Answer : (C) Phenol formaldehyde

Phenol formaldehyde is produced by condensation polymerisation. It is also known as (A) Teflon (B) Bakelite (C) Polyester (D) Nylon-66

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

Window panes of aeroplanes are normally made of (A) Perspex (PMMA) (B) Teflon (PTFE) (C) Bakelite (phenol formaldehyde) (D) Polystyrene

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

Phenol and Formaldehyde are polymerised to a resultant product known as (A) PVC. (B) bakelite. (C) polyester. (D) teflon.

Description : Phenol and Formaldehyde are polymerised to a resultant product known as (A) PVC. (B) bakelite. (C) polyester. (D) teflon.

Last Answer : (B) bakelite.

Which of the following is a copolymer? (A) PVC (B) Bakelite (C) Polythene (D) Teflon

Description : Which of the following is a copolymer? (A) PVC (B) Bakelite (C) Polythene (D) Teflon

Last Answer : (B) Bakelite

Ethylene glycol undergoes oxidation with hot acidic KMnO4 to form : (a) Formic acid (b) Formaldehyde(c) Acetic acid(d) Acetaldehyde

Description : Ethylene glycol undergoes oxidation with hot acidic KMnO4 to form : (a) Formic acid (b) Formaldehyde (c) Acetic acid (d) Acetaldehyde

Last Answer : Formic acid

Which of the following compounds will react with methylmagnesium iodide followed by acid-hydrolysis to give ethyl alcohol? (a) Ethylene (b) Acetaldehyde (c) Formaldehyde (d) Acetone

Description : Which of the following compounds will react with methylmagnesium iodide followed by acid-hydrolysis to give ethyl alcohol? (a) Ethylene (b) Acetaldehyde (c) Formaldehyde (d) Acetone

Last Answer : Formaldehyde

Acetylene reacts with water in the presence of sulfuric acid and mercuric sulfate to give (a) Acetone (b) Acetic acid (c) Formaldehyde (d) Acetaldehyde

Description : Acetylene reacts with water in the presence of sulfuric acid and mercuric sulfate to give (a) Acetone (b) Acetic acid (c) Formaldehyde (d) Acetaldehyde

Last Answer : Acetaldehyde

Benzenediazonium chloride reacts with hypophosphorus acid to form : (a) Phenol (b) Benzaldehyde (c) Aniline (d) Benzene

Description : Benzenediazonium chloride reacts with hypophosphorus acid to form : (a) Phenol (b) Benzaldehyde (c) Aniline (d) Benzene

Last Answer : Benzene

Hydrolysis of benzal chloride gives (a) Phenol (b) Benzaldehyde (c) Benzyl alcohol(d) Benzoyl chloride

Description : Hydrolysis of benzal chloride gives (a) Phenol (b) Benzaldehyde (c) Benzyl alcohol (d) Benzoyl chloride

Last Answer : (d) Benzoyl chloride

Pick out the wrong statement. (A) For the manufacture of styrene, the major raw materials are benzene and ethylene (B) One important copolymer of styrene is SBR, which is widely used in the manufacture of automobile tyres (C) Manufacture of phenol by chloroben-zene-eaustic process involves. The chlorination of benzene, causticisation and hydrolysis (D) Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available

Description : Pick out the wrong statement. (A) For the manufacture of styrene, the major raw materials are benzene and ethylene (B) One important copolymer of styrene is SBR, which is widely ... D) Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available

Last Answer : (D) Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available

Write the polymer of phenol and formaldehyde that is used for making combs.

Description : Write the polymer of phenol and formaldehyde that is used for making combs.

Last Answer : Ans: Bakelite, (a) Phenol (b) Formaldehyde 

Natural rubber is a polymer of (a) Propene (b) Isoprene (c) Formaldehyde(d) Phenol

Description : Natural rubber is a polymer of (a) Propene (b) Isoprene (c) Formaldehyde (d) Phenol

Last Answer : Isoprene

Pick up the correct statement from the following: (A) Alexander Parkes, a Scottish chemist prepared a hard material by mixing camphor and alcohol with nitro cellulose and called it, as Parkesite (B) Dr. L. Bakeland, a Belgian scientist prepared a product known as Bakelite (C) Pollark, an Austrian scientist prepared a substance from urea and formaldehyde and called it Plastic (D) All the above

Description : Pick up the correct statement from the following: (A) Alexander Parkes, a Scottish chemist prepared a hard material by mixing camphor and alcohol with nitro cellulose and called it, as Parkesite ... prepared a substance from urea and formaldehyde and called it Plastic (D) All the above

Last Answer : Answer: Option D

Phenol formaldehyde (A) Employs addition polymerisation (B) Employs condensation polymerisation (C) Is a monomer

Description : Phenol formaldehyde (A) Employs addition polymerisation (B) Employs condensation polymerisation (C) Is a monomer

Last Answer : (B) Employs condensation polymerisation

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

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

Which of the following is an elastomer? (A) Thiokol (B) Phenol formaldehyde (C) Urea formaldehyde (D) Polystyrene

Description : Which of the following is an elastomer? (A) Thiokol (B) Phenol formaldehyde (C) Urea formaldehyde (D) Polystyrene

Last Answer : (A) Thiokol

Neoprene is the trade name of (A) Polyurethane (B) Phenol formaldehyde (C) Polychlorophrene (D) Styrene butadiene rubber (SBR)

Description : Neoprene is the trade name of (A) Polyurethane (B) Phenol formaldehyde (C) Polychlorophrene (D) Styrene butadiene rubber (SBR)

Last Answer : (C) Polychlorophrene

Condensation polymerisation of formaldehyde with __________ does not produce phenolic resin. (A) Resorcinol (B) Phenol (C) Para-cresol (D) Melamine

Description : Condensation polymerisation of formaldehyde with __________ does not produce phenolic resin. (A) Resorcinol (B) Phenol (C) Para-cresol (D) Melamine

Last Answer : (D) Melamine

Teflon is (A) Phenol formaldehyde (B) An inorganic polymer (C) Polytetrafluroethylene (PTFE) (D) A monomer

Description : Teflon is (A) Phenol formaldehyde (B) An inorganic polymer (C) Polytetrafluroethylene (PTFE) (D) A monomer

Last Answer : (C) Polytetrafluroethylene (PTFE)

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

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

__________ is never shipped in glass carboys. (A) Ammonia (B) Acetic acid (C) Phenol (D) Formaldehyde

Description : __________ is never shipped in glass carboys. (A) Ammonia (B) Acetic acid (C) Phenol (D) Formaldehyde

Last Answer : (A) Ammonia

Which of the following is produced by addition polymerisation? (A) Polybutadiene (B) Phenol formaldehyde (C) Urea-formaldehyde (D) Dacron

Description : Which of the following is produced by addition polymerisation? (A) Polybutadiene (B) Phenol formaldehyde (C) Urea-formaldehyde (D) Dacron

Last Answer : (A) Polybutadiene

Phenol formaldehyde resin is used as an adhesive in making (A) Laminates (B) Card boxes (C) Furniture (D) Books

Description : Phenol formaldehyde resin is used as an adhesive in making (A) Laminates (B) Card boxes (C) Furniture (D) Books

Last Answer : (A) Laminates

Catalytic oxidation-dehydrogenation of methyl alcohol produces (A) Formaldehyde (B) Phenol (C) Acetone (D) Maleic anhydride

Description : Catalytic oxidation-dehydrogenation of methyl alcohol produces (A) Formaldehyde (B) Phenol (C) Acetone (D) Maleic anhydride

Last Answer : (A) Formaldehyde

Neoprene is the trade name of (A) Polyurethane (B) Phenol formaldehyde (C) Polychlorophrene (D) Styrene-butadiene rubber

Description : Neoprene is the trade name of (A) Polyurethane (B) Phenol formaldehyde (C) Polychlorophrene (D) Styrene-butadiene rubber

Last Answer : (C) Polychlorophrene

Fourdrinier machine is used in the manufacture of (A) Sugar (B) Paper (C) Alcohol from molasses (D) Phenol formaldehyde

Description : Fourdrinier machine is used in the manufacture of (A) Sugar (B) Paper (C) Alcohol from molasses (D) Phenol formaldehyde

Last Answer : (B) Paper

Teflon is (A) Phenol formaldehyde (B) An inorganic polymer (C) Poly tetra-fluoro-ethylene (P.T.F.E.) (D) A monomer

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.)

__________ is produced using Polycondensation reaction. (A) Polythene (B) Phenol formaldehyde (C) Poly vinyl chloride (D) None of these

Description : __________ is produced using Polycondensation reaction. (A) Polythene (B) Phenol formaldehyde (C) Poly vinyl chloride (D) None of these

Last Answer : (B) Phenol formaldehyde

Phenol formaldehyde (A) Employs addition polymerisation (B) Employs condensation polymerisation (C) Is a monomer (D) Is an abrasive material

Description : Phenol formaldehyde (A) Employs addition polymerisation (B) Employs condensation polymerisation (C) Is a monomer (D) Is an abrasive material

Last Answer : (B) Employs condensation polymerisation

Bisphenol A is produced by the condensation of acetone with (A) Formaldehyde (B) Ethyl alcohol (C) Diethyl ether (D) Phenol

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

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

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

Which one of the following polymers is obtained from condensation polymerization? (A) Phenol formaldehyde (B) Carbamide (C) Melamine-formaldehyde (D) All of these

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

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 : 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

Last Answer : Answer: Option D

Give the applications of phenol formaldehyde resin.

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.

Is (CH2 — CH — C6H5 ) n a homo polymer or a copolymer.

Description : Is (CH2 — CH — C6H5 ) n a homo polymer or a copolymer.

Last Answer : Ans. It is a homo polymer and the monomer from which it is obtained in styrene C6H5 CH = CH2 .

Arrange the following carboxyl compounds in increasing order of their reactivity in nucleophilic addition reactions. Explain with proper reasoning : Benzaldehyde. p-tolualdeyde, p-nitrobenzaldehyde, Acetophenone.

Description : Arrange the following carboxyl compounds in increasing order of their reactivity in nucleophilic addition reactions. Explain with proper reasoning : Benzaldehyde. p-tolualdeyde, p-nitrobenzaldehyde, Acetophenone.

Last Answer : Ans. Acetophenone is a ketone while all others are aldehydes, therefore it is least reactive. In p-tolualdehyde, there is methyl group (CH3 ) at para position w.r.t. to the ... overall order of increasing reactivity : acetophenone < p-tolualdehyde < benzaldehyde < p-nitrobenzaldehyde. 

Would you expect benzaldehyde to be more reactive or less reactive in nucleophlic addition reaction than propanal ? Explain.

Description : Would you expect benzaldehyde to be more reactive or less reactive in nucleophlic addition reaction than propanal ? Explain.

Last Answer : C-atom of carbonyl group of benzaldehyde is less electrophilic than C-atom of carbonyl group in propanal. Polarity of carbonyl group is in benzaldehyde reduced due to resonance making it less ... group in it is more than in benzaldehyde. This makes propanal more reactive than benzaldehyde.