Description : __________ is a homopolymer. (A) Neoprene (B) Bakelite (C) Nylon-66 (D) Terylene
Last Answer : (A) Neoprene
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
Description : Pick out the wrong statement. (A) Polystyrene is a thermoplastic polymer (B) Protein is a natural polymer (C) Neoprene is a natural rubber (D) Polythene is a copolymer, while SBR is a homopolymer
Last Answer : (C) Neoprene is a natural rubber
Description : Define Synthetic rubbers. Whether it is homopolymer or co-polymer?
Last Answer : Ans: Any Vuclanised rubbers like polymers. Which is getting stretched to about twice lengths and returns to the original shape and size as the external force is released. Eg. Homopolymers.
Description : Synthetic polymer produced by using terephthalic acid and ethylene glycol is (A) Terylene (B) Nylon-66 (C) PVC (D) Polystyrene
Last Answer : (A) Terylene
Description : Terylene is a polymer of:
Last Answer : Terylene is a polymer of: A. Adipic acid and hexamethylene di amine B. terephthalic acid and ... glycol C. phenol and formaldehyde D. vinyl cyanide
Description : The polymer obtained by the condensation of hexamethylene diamine and adipic acid is – (1) Nylon 66 (2) Terylene (3) Tollen's (4) Bakelite
Last Answer : (1) Nylon 66 Explanation: Polymers are very high molecular mass substances each molecule of which consists of very large number of simple structural units joined together though covalent bonds ... the repeating structural unit is derived from two monomer units - hexamethylenediamine and adipic acid.
Description : Terylene is a condensation polymer of ethylene glycol and which acid? (1) Benzoic Acid (2) Salicylic acid (3) Phthalic acid (4) Terephthalic acid
Last Answer : Terephthalic acid
Description : The polymer obtained by the condensation of hexamethylene diamine and adipic acid is : (1) Nylon 66 (2) Terylene (3) Tollen’s (4) Bakelite
Last Answer : Nylon 66
Description : Which of the following is not a condensation polymer? (A) Bakelite (B) Melamine polymer (C) Poly-methyl-methacrylate (PMMA) (D) None of these
Last Answer : (C) Poly-methyl-methacrylate (PMMA)
Description : Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800? (A) 50000 (B) 51600 (C) 49200 (D) 50800
Last Answer : (A) 50000
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
Description : Orlan fibre which is used as a wool substitute is (A) An amorphous polymer (B) A natural polymeric fibre (C) Polyacrylonitrile (D) Poly-methyl-methacrylate (PMMA)
Last Answer : (C) Polyacrylonitrile
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 : Addition polymerisation is not involved in the manufacture of (A) Low density polythene (B) Poly vinyl chloride (C) Polystyrene (D) Polyhexamethylene adipamide
Last Answer : (D) Polyhexamethylene adipamide
Description : Dacron is a/an (A) Addition polymer (B) Condensation polymer (C) Polyester (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : Alkyd resin is a/an (A) Polyamide (B) Polyester (C) Polyolefin (D) Addition polymer
Last Answer : (B) Polyester
Description : __________ is an addition polymer (A) Nylon (B) Bakelite (C) Polythene (D) None of these
Last Answer : (C) Polythene
Description : Bakelite is a/an (A) Addition polymer (B) Elastomer (C) Thermoplastic (D) None of these
Description : __________ polymer is used for making unbreakable crockery. (A) Thermoplastic (B) Melamine (C) Addition (D) None of these
Last Answer : (B) Melamine
Description : Why is cellulose called homopolymer? -Biology
Last Answer : answer:
Description : Restriction endonucleases can recognise (A) Palindromic sequences (B) Chimeric DNA (C) DNA-RNA hybrids (D) Homopolymer sequences
Last Answer : Answer : A
Description : Which of the following is not an example of addition polymer?
Last Answer : Which of the following is not an example of addition polymer? A. Polystyrene B. Polyethylene C. Polypropylene D. Dacron
Description : Classify the polymers as addition and condensation polymer— Nylon 6, Neoprene and PVC.
Last Answer : Ans: Nylon 6 —Condensation polymer Neoprene and PVC— Addition polymer.
Description : Differntiate between addition polymer and condensation polymer.
Last Answer : Addition Polymer Condensation Polymer 1. Large no. of unsaturated monomers combine together to form polymers Eg. Polythene and ... group with release of small molecule like water combine to form polymers. Eg. Nylon and Teflon
Description : In step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smaller molecules. An example of step growth polymerisation product is (A) Terylene (B) Polybutadiene (C) PVC (D) Polypropylene
Description : Terylene is (A) Same as Dacron (B) A polyester (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : Condensation polymerisation is not involved in the manufacture of (A) Teflon (B) Polythene (C) Terylene (D) Nylon
Last Answer : (B) Polythene
Description : __________ is not a polyester fibre. (A) Terylene (B) Dacron (C) Nylon (D) Polyacrylonitrile
Last Answer : (C) Nylon
Description : Dacron (or Terylene) fibres as compared to nylon fibres have (A) Better heat & acid resistant properties (B) Poorer resistance to alkalis (C) Poorer dyeability (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Hofmann rearrangement In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromide to give a primary amine that ha
Last Answer : Hofmann rearrangement In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromide to ... . `II gt I gt IV gt III`
Last Answer : Hofmann rearrangement In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromide to ... O)overset(||)(C)-NH_(2)`
Description : The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the strating amide is known as Hofmann-Bromoamide
Last Answer : The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the ... ` Mechanism: A. B. C. D. all of these
Last Answer : The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the strating ... : Find X and Y: A. B. C. D.
Last Answer : The conversion of an amide by reaction `NaOH` and `Br_(2)` to primary amine that has one carbon than the strating ... reaction: A. 1 B. 2 C. 3 D. 4
Description : Properties of elements X: (i) Its amide is used as a reducing agent (ii) Its amalgam is used as reducing agent Properties of element Y: (i) It is an o
Last Answer : Properties of elements X: (i) Its amide is used as a reducing agent (ii) Its amalgam is ... in its maximum oxidation state is neutral in aq. Medium
Last Answer : Properties of elements X: (i) Its amide is used as a reducing agent (ii) Its amalgam is used as ... oxidation number of Y in this compound is `+4`
Last Answer : Properties of elements X: (i) Its amide is used as a reducing agent (ii) Its amalgam is used as reducing agent ... 3` and `+5` D. `-2` and `+4`
Description : For synthesis of CTP and UTP, the amino group comes from (A) Amide group of Asparagine (B) Amide group of glutamine (C) α-Amino group of glutamine (D) α-Amino group of glutamate
Last Answer : Answer : B
Description : Niacin contains a (A) Sulphydryl group (B) Carboxyl group (C) Amide group (D) All of these
Description : In biotin-containing enzymes, the biotin is bound to the enzyme by (A) An amide linkage to carboxyl group of glutamine (B) A covalent bond with CO2 (C) An amide linkage to an amino group of lysine (D) An amide linkage to α-carboxyl group of protein
Last Answer : Answer : C
Description : The acid amide of Aspartic acid is (A) Glutamine (B) Arginine (C) Aspargine (D) Ornithine
Description : Which one of the following statements concerning glutamine is correct? (A) Contains three tetratable groups (B) Is classified as an acidic amino acid (C) Contains an amide group (D) Migrates to the cathode during electrophoresis at pH 7.0
Description : Why is amide more acidic than an amine ?
Last Answer : Ans.—In amide there is C=O group attached NH2 , electron withdrawing & increases acidic nature of amide whereas in amines there is alkyl group which is electron releasing and makes it more basic & hence less acidic.
Description : What is an amide?
Last Answer : The extra carboxyl group (other thanˇalpha car- boxyl) can combine with ammonia to form the cor- responding amide.
Description : A nitrile can be made by dehydrating an amide. However, for this reaction to occur, the amide must be : (a) primary (b) secondary (c) tertiary (d) N-methylated
Last Answer : primary
Description : Reduction of an imine will give an (a) Acid (b) Amide (c) Amine (d) Alcohol
Last Answer : Amine
Description : Consider a small aliphatic 1° amine, 1° alcohol, ester, carboxylic acid, and amide, all of similar molecular weight. Which one is most likely to have the highest boiling point? (a) The amide (b) The alcohol (c) The ester (d) The carboxylic acid
Last Answer : The amide
Description : Which of the following is the correct ranking in decreasing order of relative Boiling Point of carbonyl containing compounds? (a) primary amide > carboxylic acid >> ester ~ acyl chloride ~ aldehyde ~ ketone ... chloride ~ amide (d) carboxylic acid > amide >> ester ~ acyl chloride ~ aldehyde ~ ketone
Last Answer : primary amide > carboxylic acid >> ester ~ acyl chloride ~ aldehyde ~ ketone