19440
The ‘mercerised cellulose’ is chemically prepared by
1 Acetylation
2 Mercuriation
3 Halogenation
4 Hydrolysis
Explanation:
Acetylation describes a reaction that introduces an acetyl functional group into a chemical compound.Mercerisation is an industrial process involving sodium hydroxide for cotton yarns or fabrics to increase the lustre and dyeability.Halogenation is the replacement of one or more hydrogen atoms in an organic compound by a halogen (fluorine, chlorine, bromine or iodine).Hydrolysis is a reaction in which a molecule of water ruptures one or more chemical bonds.
POLYMERS
19441
The plastics if are hard, become soft and readily workable by addition of certain compounds called
1 Catalysts
2 Telomers
3 Plasticisers
4 Vulcaniser
Explanation:
(c) e.g.- \(PVC \) is extremely stiff and hard but the addition of di - \(n\) butyl phthalate Plasticizers makes it soft and rubber like.
POLYMERS
19442
The alkyd resins are condensation polymers obtained from dibasic acids and
1 Phenol
2 Glycerol
3 Glycol
4 Formaldehyde
Explanation:
Alkyd resins are organic polyesters. They are derived from a polybasic acid (a molecule with two or more acid groups) and polyhydric alcohol (a molecule with two or more hydroxyl groups). For example- Phthalic acid and glycerol.
POLYMERS
19443
Celluloid is
1 A thermoplastic material obtained from caprolactam and urea
2 A thermoplastic material obtained from cellulose nitrate and camphor
3 A thermosetting material obtained from urea and formaldehyde
4 A thermosetting material obtained from glycerol and phthalic anhydride
Explanation:
Celluloids are a class of compounds created from nitrocellulose and camphor, with added dyes and other agents. Generally considered the first thermoplastic.
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POLYMERS
19440
The ‘mercerised cellulose’ is chemically prepared by
1 Acetylation
2 Mercuriation
3 Halogenation
4 Hydrolysis
Explanation:
Acetylation describes a reaction that introduces an acetyl functional group into a chemical compound.Mercerisation is an industrial process involving sodium hydroxide for cotton yarns or fabrics to increase the lustre and dyeability.Halogenation is the replacement of one or more hydrogen atoms in an organic compound by a halogen (fluorine, chlorine, bromine or iodine).Hydrolysis is a reaction in which a molecule of water ruptures one or more chemical bonds.
POLYMERS
19441
The plastics if are hard, become soft and readily workable by addition of certain compounds called
1 Catalysts
2 Telomers
3 Plasticisers
4 Vulcaniser
Explanation:
(c) e.g.- \(PVC \) is extremely stiff and hard but the addition of di - \(n\) butyl phthalate Plasticizers makes it soft and rubber like.
POLYMERS
19442
The alkyd resins are condensation polymers obtained from dibasic acids and
1 Phenol
2 Glycerol
3 Glycol
4 Formaldehyde
Explanation:
Alkyd resins are organic polyesters. They are derived from a polybasic acid (a molecule with two or more acid groups) and polyhydric alcohol (a molecule with two or more hydroxyl groups). For example- Phthalic acid and glycerol.
POLYMERS
19443
Celluloid is
1 A thermoplastic material obtained from caprolactam and urea
2 A thermoplastic material obtained from cellulose nitrate and camphor
3 A thermosetting material obtained from urea and formaldehyde
4 A thermosetting material obtained from glycerol and phthalic anhydride
Explanation:
Celluloids are a class of compounds created from nitrocellulose and camphor, with added dyes and other agents. Generally considered the first thermoplastic.
19440
The ‘mercerised cellulose’ is chemically prepared by
1 Acetylation
2 Mercuriation
3 Halogenation
4 Hydrolysis
Explanation:
Acetylation describes a reaction that introduces an acetyl functional group into a chemical compound.Mercerisation is an industrial process involving sodium hydroxide for cotton yarns or fabrics to increase the lustre and dyeability.Halogenation is the replacement of one or more hydrogen atoms in an organic compound by a halogen (fluorine, chlorine, bromine or iodine).Hydrolysis is a reaction in which a molecule of water ruptures one or more chemical bonds.
POLYMERS
19441
The plastics if are hard, become soft and readily workable by addition of certain compounds called
1 Catalysts
2 Telomers
3 Plasticisers
4 Vulcaniser
Explanation:
(c) e.g.- \(PVC \) is extremely stiff and hard but the addition of di - \(n\) butyl phthalate Plasticizers makes it soft and rubber like.
POLYMERS
19442
The alkyd resins are condensation polymers obtained from dibasic acids and
1 Phenol
2 Glycerol
3 Glycol
4 Formaldehyde
Explanation:
Alkyd resins are organic polyesters. They are derived from a polybasic acid (a molecule with two or more acid groups) and polyhydric alcohol (a molecule with two or more hydroxyl groups). For example- Phthalic acid and glycerol.
POLYMERS
19443
Celluloid is
1 A thermoplastic material obtained from caprolactam and urea
2 A thermoplastic material obtained from cellulose nitrate and camphor
3 A thermosetting material obtained from urea and formaldehyde
4 A thermosetting material obtained from glycerol and phthalic anhydride
Explanation:
Celluloids are a class of compounds created from nitrocellulose and camphor, with added dyes and other agents. Generally considered the first thermoplastic.
19440
The ‘mercerised cellulose’ is chemically prepared by
1 Acetylation
2 Mercuriation
3 Halogenation
4 Hydrolysis
Explanation:
Acetylation describes a reaction that introduces an acetyl functional group into a chemical compound.Mercerisation is an industrial process involving sodium hydroxide for cotton yarns or fabrics to increase the lustre and dyeability.Halogenation is the replacement of one or more hydrogen atoms in an organic compound by a halogen (fluorine, chlorine, bromine or iodine).Hydrolysis is a reaction in which a molecule of water ruptures one or more chemical bonds.
POLYMERS
19441
The plastics if are hard, become soft and readily workable by addition of certain compounds called
1 Catalysts
2 Telomers
3 Plasticisers
4 Vulcaniser
Explanation:
(c) e.g.- \(PVC \) is extremely stiff and hard but the addition of di - \(n\) butyl phthalate Plasticizers makes it soft and rubber like.
POLYMERS
19442
The alkyd resins are condensation polymers obtained from dibasic acids and
1 Phenol
2 Glycerol
3 Glycol
4 Formaldehyde
Explanation:
Alkyd resins are organic polyesters. They are derived from a polybasic acid (a molecule with two or more acid groups) and polyhydric alcohol (a molecule with two or more hydroxyl groups). For example- Phthalic acid and glycerol.
POLYMERS
19443
Celluloid is
1 A thermoplastic material obtained from caprolactam and urea
2 A thermoplastic material obtained from cellulose nitrate and camphor
3 A thermosetting material obtained from urea and formaldehyde
4 A thermosetting material obtained from glycerol and phthalic anhydride
Explanation:
Celluloids are a class of compounds created from nitrocellulose and camphor, with added dyes and other agents. Generally considered the first thermoplastic.