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प्रश्न
Write the formulae of the raw materials used for preparation of Dextran.
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उत्तर
Raw materials used for the preparation of Dextron:
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संबंधित प्रश्न
Write the reactions involved in the preparation of PVC
Bakelite is the polymer of:
(a) Benzaldchyde and phenol
(b) Acetaldehyde and phenol
(c) Formaldehyde and phenol
(d) Formaldehyde and benzyl alcohol
Based on molecular forces, what type of polymer is neoprene?
Write the structures of the monomers used for getting the following polymers
Melamine – formaldehyde polymer
Answer the following in one sentence.
What type of intermolecular force leads to high-density polymer?
Answer the following in one sentence.
Identify thermoplastic and thermosetting plastic from the following:
- PET
- Urea formaldehyde resin
- Polythene
- Phenol formaldehyde resin
Answer the following.
Write the reaction of the formation of Nylon 6.
Answer the following.
Match the following pairs:
| Name of polymer | Monomer |
| 1. Teflon | a. CH2 = CH2 |
| 2. PVC | b. CF2 = CF2 |
| 3. Polyester | c. CH2 = CHCl |
| 4. Polythene | d. C6H5OH and HCHO |
| 5. Bakelite | e. Dicarboxylic acid and polyhydoxyglycol |
Answer the following.
Write name and formula of raw material from which bakelite is made.
Attempt the following:
Explain the vulcanisation of rubber. Which vulcanizing agents are used for the following synthetic rubber?
a. Neoprene
b. Buna-N
Write the reaction involved in the formation of:
Bakelite
Write preparation, properties, and uses of Teflon.
Answer the following.
Is synthetic rubber better than natural rubber? If so, in what respect?
Write the name of the catalyst used for preparation of high density polythene polymer.
Monomer of natural rubber is __________
Write preparation of low density polythene.
Write chemical reaction for preparation of the following.
Buna-S
Write the name and formulae of the monomers used for the preparation of dacron.
Explain vulcanization of rubber.
Define rubber.
How many isoprene units are present in abscisic acid?
Which of the following is the monomer of neoprene?
\[\ce{{n} CH2 = CH2 ->[333 K - 343 K][6 - 7 atm, catalyst] X}\]
Which of the following is CORRECT about polymer 'X'?
Which of the following catalysts is used in preparation of terylene?
Which among the following monomers is used to prepare Teflon?
Which of the following pair of compounds is used as monomers for bakelite?
Which among the following polymers is used to manufacture chemical containers?
Which among the following is an example of addition polymer?
Which of the following is not a semisynthetic polymer?
Which of the following polymers, need atleast one diene monomer for their preparation?
(i) Dacron
(ii) Buna-S
(iii) Neoprene
(iv) Novolac
Match the polymers given in Column I with the type of linkage present in them given in Column II.
| Column I | Column II |
| (i) Terylene | (a) Glycosidic linkage |
| (ii) Nylon | (b) Ester linkage |
| (iii) Cellulose | (c) Phosphodiester linkage |
| (iv) Protein | (d) Amide linkage |
| v) RNA |
Which of the following is not a copolymer?
Which one of the following polymers are prepared by addition polymerization?
Which of the following is an example of polyester?
Which of the following polymers is synthesized using a free radical polymerisation technique?
Polymer used in bullet proof glass is ______.
Which of the following polymers do not involve cross linkages?
Identify the monomer used to prepare neoprene.
Name and draw the structure of the repeating unit in natural rubber.
Name the compound which reacts with formaldehyde to produce ethyl alcohol.
Write the name of the monomer of natural rubber.
Another name of terylene is ______.
The monomer used in preparation of teflon is ______.
Write the structure and name of monomer of Natural rubber.
Write the structure of isoprene and the polymer obtained from it.
Write the structure of isoprene and the polymer obtained from it.
Name and draw structure of the repeating unit in natural rubber.
Write the structure of isoprene and the polymer obtained from it.
Write the structure of isoprene and the polymer obtained from it.
Name and draw structure of the repeating unit in natural rubber.
Write the structure of isoprene and the polymer obtained from it.
