Simplest unit of polymers?

Simplest unit of polymers?
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Big molecule
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Simplest unit of polymers?

Description : Simplest unit of polymers?

Last Answer : Monomer

38. Which of the following statements is false? (1) Both starch and cellulose are polymers of glucose (2) Artificial silk is derived from cellulose (3) Nylon-66 is an example of elastomer (4) The repeat unit in natural rubber is isoprene

Description : 38. Which of the following statements is false? (1) Both starch and cellulose are polymers of glucose (2) Artificial silk is derived from cellulose (3) Nylon-66 is an example of elastomer (4) The repeat unit in natural rubber is isoprene

Last Answer : Nylon-66 is an example of elastomer

Which is the simplest method of implementing hardwired control unit? a) State Table Method b) Delay Element Method c) Sequence Counter Method d) Using Circuits

Description : Which is the simplest method of implementing hardwired control unit? a) State Table Method b) Delay Element Method c) Sequence Counter Method d) Using Circuits

Last Answer : Answer: a Explanation: There are 3 ways of implementing hardwired control unit: A state table is the simplest method in which a number of circuits are designed based on the cells in the table. ... a delay element. A sequence counter method used k-modulo counter as a replacement for k delay elements

What is the simplest unit of repetition in a crystalline structure?

Description : What is the simplest unit of repetition in a crystalline structure?

Last Answer : ANSWER: A UNIT CELL

The hard; plastic covers of telephones are made of polymers?

Description : The hard; plastic covers of telephones are made of polymers?

Last Answer : Phenol - formaldehyde

Examples of artificial polymers are?

Description : Examples of artificial polymers are?

Last Answer : Rayon; Nylon; Teflon etc.

Examples of natural polymers are?

Description : Examples of natural polymers are?

Last Answer : Cellulose; silk etc.

The process by which polymers and plas- tics made from monomers?

Description : The process by which polymers and plas- tics made from monomers?

Last Answer : Polymerisation

What is the advantage of synthetic polymer over glass? OR Why is glass being replaced by synthetic polymers?

Description : What is the advantage of synthetic polymer over glass? OR Why is glass being replaced by synthetic polymers?

Last Answer : Glass is being replaced by light and transparent synthetic polymers like poly methyl metacrylate polymers. The advantages of polymers are that they are unbreakable, light and scratches on polymers can be removed by wiping with acetone.

Write the names of two natural polymers and what are the names of their monomers ?

Description : Write the names of two natural polymers and what are the names of their monomers ?

Last Answer : Two natural polymers are called cellulose and protein. Cellulose monomers are called glucose and protein monomers are called amino acids.

Among the following polymers, the strongest molecular forces are present in:

Description : Among the following polymers, the strongest molecular forces are present in:

Last Answer : Among the following polymers, the strongest molecular forces are present in: A. elastomers B. fibres C. thermoplastics D. thermosetting polymers

Polymers of the type, `X-M_(n)-Y` are called:

Description : Polymers of the type, `X-M_(n)-Y` are called:

Last Answer : Polymers of the type, `X-M_(n)-Y` are called: A. Telomers B. copolymers C. elastomers D. invertomers

What is elasticity in polymers generally related to amount of hydrogen bonding between different subunits number of subunits in the polymer chain its greater tensile strength the synthetic composure?

Description : What is elasticity in polymers generally related to amount of hydrogen bonding between different subunits number of subunits in the polymer chain its greater tensile strength the synthetic composure?

Last Answer : amount of hydrogen bonding between different subunitsnumber of subunits in the polymer chainits greater tensile strengththe synthetic composure

In your body proteins are polymers assembled from monomers called what?

Description : In your body proteins are polymers assembled from monomers called what?

Last Answer : Need answer

When does DNA polymers check mutations?

Description : When does DNA polymers check mutations?

Last Answer : Feel Free to Answer

What happens when you mix Clorox with polymers?

Description : What happens when you mix Clorox with polymers?

Last Answer : What is the answer ?

What Nucleic acid polymers are made up of?

Description : What Nucleic acid polymers are made up of?

Last Answer : Need answer

Are All Conductive Polymers, Conjugated Polymer?

Description : Are All Conductive Polymers, Conjugated Polymer?

Last Answer : Answers is the place to go to get the answers you need and to ask the questions you want

Polymers of more than 100 amino acids are termed (A) Proteins (B) Polypeptides (C) Both (A) and (B) (D) None of these

Description : Polymers of more than 100 amino acids are termed (A) Proteins (B) Polypeptides (C) Both (A) and (B) (D) None of these

Last Answer : Answer : A

Starch and glycogen are polymers of (A) Fructose (B) Mannose (C) α−D-Glucose (D) Galactose

Description : Starch and glycogen are polymers of (A) Fructose (B) Mannose (C) α−D-Glucose (D) Galactose

Last Answer : C

Polysaccharides are (A) Polymers (B) Acids (C) Proteins (D) Oils

Description : Polysaccharides are (A) Polymers (B) Acids (C) Proteins (D) Oils

Last Answer : A

The polymers of amino acid

Description : The polymers of amino acid

Last Answer : Ans. Proteins and enzymes

The salivary hydrolase is known as salivary amylase, or ptyalin. Ptyalin digests carbohydrates breaking starch and glycogen, glucose polymers, into maltose (a glucose disaccharide) and dextrin.

Description : The salivary hydrolase is known as salivary amylase, or ptyalin. Ptyalin digests carbohydrates breaking starch and glycogen, glucose polymers, into maltose (a glucose disaccharide) and dextrin.

Last Answer : Why doesn't the food enter the trachea instead of going to the esophagus?

(3) prevents freezing of petrol Explanation: Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound widely used as an automotive antifreeze and a precursor to polymers. In its pure form, it is an odorless, colourless, syrupy, sweettasting liquid. Ethylene glycol is toxic, and ingestion can result in death. Due to its low freezing point ethylene glycol resists freezing. A mixture of 60% ethylene glycol and 40% water freezes at -45 degree C (- 49 degree F).

Description : (3) prevents freezing of petrol Explanation: Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound widely used as an automotive antifreeze and a precursor to polymers. In its pure form, it is ... A mixture of 60% ethylene glycol and 40% water freezes at -45 degree C (- 49 degree F).

Last Answer : Rust is - (1) A mixture of Fe₂O₃ and Fe(OH) ₂ (2) A mixture of FeO and Fe(OH)₂ (3) FeO only (4) A mixture of Fe₂O₃, 3H₂O and FeO

Which one of the following polymers is widely used for making bullet proof material? (1) Polyvinyl chloride (2) Polyamides (3) Polyethylene (4) Polycarbonates

Description : Which one of the following polymers is widely used for making bullet proof material? (1) Polyvinyl chloride (2) Polyamides (3) Polyethylene (4) Polycarbonates

Last Answer : (4) Polycarbonates Explanation: Ballistic nylon was the standard cloth used for bulletproof vests until the 1970s. In 1965, Stephanie Kwolek, a chemist at Du Pont, invented Kevlar, trademark ... terephthalamide, a liquid polymer that can be spun into aramid fiber and woven into cloth.

Which one among the following polymers is used for making bullet-proof material? (1) Polyvinyl chloride (2) Polystyrene (3) Polyethylene (4) Polyamide

Description : Which one among the following polymers is used for making bullet-proof material? (1) Polyvinyl chloride (2) Polystyrene (3) Polyethylene (4) Polyamide

Last Answer : (3) Polyethylene Explanation: A bullet-proof material is made of polyethylene. It is a higher grade of the plastic found in Tupperware.

Petroleum is a mixture of – (1) elements (2) hydrocarbons (3) polymers (4) salts

Description : Petroleum is a mixture of – (1) elements (2) hydrocarbons (3) polymers (4) salts

Last Answer : (2) hydrocarbons Explanation: Petroleum or crude oil is a naturally occurring flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid ... zooplankton and algae, are buried underneath sedimentary rock and undergo intense heat and pressure.

Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature. (A) Nylon (B) Polyacrylonitrile (C) Polypropylene (D) Polyester

Description : Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature. (A) Nylon (B) Polyacrylonitrile (C) Polypropylene (D) Polyester

Last Answer : (B) Polyacrylonitrile

Polymers are (A) Micro-molecules (B) Macromolecules (C) Sub-micromolecules

Description : Polymers are (A) Micro-molecules (B) Macromolecules (C) Sub-micromolecules

Last Answer : (B) Macromolecules

Pick out the wrong statement. (A) Polymers made of only one monomer is called homopolymer (B) Polymers made of more than one monomer is called copolymer or mixed polymer (C) Vulcanised rubber is more elastic than natural rubber

Description : Pick out the wrong statement. (A) Polymers made of only one monomer is called homopolymer (B) Polymers made of more than one monomer is called copolymer or mixed polymer (C) Vulcanised rubber is more elastic than natural rubber

Last Answer : (A) Polymers made of only one monomer is called homopolyme

Unbreakable crockeries are made from __________ polymers. (A) Polystyrene (B) Melamine (C) Polystyrene (D) Polyurethane

Description : Unbreakable crockeries are made from __________ polymers. (A) Polystyrene (B) Melamine (C) Polystyrene (D) Polyurethane

Last Answer : (B) Melamine

Cross linked polymers are (A) Thermoplastic (B) Thermosetting (C) Either (A) or (B) (D) Fibres only

Description : Cross linked polymers are (A) Thermoplastic (B) Thermosetting (C) Either (A) or (B) (D) Fibres only

Last Answer : (B) Thermosetting

Pick out the wrong statement. (A) Addition polymers are generally formed by chain growth polymerisation (B) Condensation polymers are generally formed by step growth polymerisation (C) Teflon is formed by step growth polymerisation (D) Bakelite is formed by step growth polymerisation

Description : Pick out the wrong statement. (A) Addition polymers are generally formed by chain growth polymerisation (B) Condensation polymers are generally formed by step growth polymerisation (C) Teflon is formed by step growth polymerisation (D) Bakelite is formed by step growth polymerisation

Last Answer : C) Teflon is formed by step growth polymerisation

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

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

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

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

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

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

Branched chain polymers compared to linear polymers have higher (A) Density (B) Tensile strength (C) Melting point (D) Degree of irregularity in atomic packing

Description : Branched chain polymers compared to linear polymers have higher (A) Density (B) Tensile strength (C) Melting point (D) Degree of irregularity in atomic packing

Last Answer : (D) Degree of irregularity in atomic packing

Thermosetting resins/polymers as compared to thermoplastic ones are (A) Soluble in all organic solvents (B) More brittle (C) Formed by addition polymerisation only (D) Easily reshaped & reused

Description : Thermosetting resins/polymers as compared to thermoplastic ones are (A) Soluble in all organic solvents (B) More brittle (C) Formed by addition polymerisation only (D) Easily reshaped & reused

Last Answer : (B) More brittle

In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres. (A) Viscose rayon (B) Acrylic (C) Polyvinyl acetate (D) Saturated polyeste

Description : In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres. (A) Viscose rayon (B) Acrylic (C) Polyvinyl acetate (D) Saturated polyeste

Last Answer : (D) Saturated polyeste

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 in the manufacture of (A) Siloxane elastomers (B) Polyamides (C) Vinyl polymers (D) Urea-formaldehyde resins

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

. In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher (A) Densities (B) Melting point (C) Tensile strength (D) Hardness, rigidity & brittleness

Description : . In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher (A) Densities (B) Melting point (C) Tensile strength (D) Hardness, rigidity & brittleness

Last Answer : (D) Hardness, rigidity & brittleness

The generic chemical name for the class of polymers which are commercially known as nylons is (A) Polyolefins (B) Polyamide (C) Polyacrylate (D) Polyurethane

Description : The generic chemical name for the class of polymers which are commercially known as nylons is (A) Polyolefins (B) Polyamide (C) Polyacrylate (D) Polyurethane

Last Answer : (B) Polyamide

Polymerisation of poly functional monomers produces polymers having (A) Good mechanical strength (B) Low viscosity (C) Low melting point (D) None of these

Description : Polymerisation of poly functional monomers produces polymers having (A) Good mechanical strength (B) Low viscosity (C) Low melting point (D) None of these

Last Answer : (A) Good mechanical strength

Melt spinning of polymers involves the forcing of polymer melt through spinnerates (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres. (A) Acrylic (B) Polyester (C) Nylon 6:6 (D) Polypropylene

Description : Melt spinning of polymers involves the forcing of polymer melt through spinnerates (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter ... the __________ fibres. (A) Acrylic (B) Polyester (C) Nylon 6:6 (D) Polypropylene

Last Answer : (A) Acrylic

Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding (A) Glycerol (B) Nitro cellulose (C) Camphor (D) None of these

Description : Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding (A) Glycerol (B) Nitro cellulose (C) Camphor (D) None of these

Last Answer : (C) Camphor

Which of the following polymers shows the highest anti-tacking properties? (A) Melamine formaldehyde resin (B) Phenolic resin (C) Epoxy resin (D) Alkyd 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

Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser? (A) Ethylene glycol (B) Stearic acid estors (C) Tricresyl phosphate (D) Esters of phthalic acid

Description : Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser? (A) Ethylene glycol (B) Stearic acid estors (C) Tricresyl phosphate (D) Esters of phthalic acid

Last Answer : (A) Ethylene glycol

Pick out the wrong statement. (A) Polymeric fibres are never produced by addition polymerisation (B) Property of tackiness is exhibited by uncured rubber (C) Sharp melting point is not observed in thermoplastic polymers (D) Polythene generally has an excellent resistance to ultra violet rays

Description : Pick out the wrong statement. (A) Polymeric fibres are never produced by addition polymerisation (B) Property of tackiness is exhibited by uncured rubber (C) Sharp melting point is not observed in thermoplastic polymers (D) Polythene generally has an excellent resistance to ultra violet rays

Last Answer : (A) Polymeric fibres are never produced by addition polymerisation

Linear polymers are normally (A) Thermosetting (B) Thermoplastic (C) Elastometric (D) Having extremely high softening poin

Description : Linear polymers are normally (A) Thermosetting (B) Thermoplastic (C) Elastometric (D) Having extremely high softening poin

Last Answer : (B) Thermoplastic

Which of the following polymers does not belong to the class of Polyacrylate polymer? (A) PMMA(B) Polyacrylonitrile(C) Poly Ethyl acrylate(D) None of these

Description : Which of the following polymers does not belong to the class of Polyacrylate polymer? (A) PMMA (B) Polyacrylonitrile (C) Poly Ethyl acrylate (D) None of these

Last Answer : (D) None of these