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प्रश्न
Define rubber.
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उत्तर
Polymers which are elastic in nature are called rubber.
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संबंधित प्रश्न
Write any ‘two’ uses of terylene.
Based on molecular forces, what type of polymer is neoprene?
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 structure of natural rubber and neoprene rubber along with the name and structure of their monomers.
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.
Identify condensation polymers and addition polymers from the following.
-(CH2 - CH = CH - CH2 -)n
Identify condensation polymers and addition polymers from the following.
Attempt the following:
Explain the vulcanisation of rubber. Which vulcanizing agents are used for the following synthetic rubber?
a. Neoprene
b. Buna-N
Write preparation, properties, and uses of Teflon.
Answer the following.
Is synthetic rubber better than natural rubber? If so, in what respect?
Monomers ethylene glycol and terephthalic acid undergo condensation polymerization to give polymer called ___________
Write a chemical reaction for the preparation of the following polymer.
polyacrylonitrile
Write the name and formulae of the monomers used for the preparation of dacron.
Explain the reactions involved in the preparation of viscose rayon.
Which among the following polymers is obtained from styrene and 1-3-butadiene?
How many isoprene units are present in abscisic acid?
Novolac is obtained from ____________.
Identify the polymer obtained by polymerization of n moles of acrylonitrile.
Which of the following catalysts is used in preparation of terylene?
Which among the following polymers is obtained from CH2 = CH – CN by polymerisation?
Which among the following catalysts is used in the preparation of dacron?
Identify the monomers used in the preparation of Novolac.
Identify the catalyst used in the manufacture of high density polythene.
Which of the following polymers is prepared by using phenol?
Which of the following monomers is used in the manufacture of Neoprene rubber?
Which among the following polymers is an example of addition polymer?
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 of the following polymers, need atleast one diene monomer for their preparation?
(i) Dacron
(ii) Buna-S
(iii) Neoprene
(iv) Novolac
Name the polymers used in laminated sheets and give the name of monomeric units involved in its formation.
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 of the following polymer has ester linkage?
Trans - form of poly isoprene is:-
Which of the following polymers do not involve cross linkages?
Which of the foolowing polymer is used in the manufacture of insulators.
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 structure of isoprene and the polymer obtained from it.
Write the name of the monomer of natural rubber.
Match the following pairs:
| Polymer | Monomer | ||
| (i) | Teflon | (a) | CH2 = CH2 |
| (ii) | PVC | (b) | CF2 = CF2 |
| (iii) | Natural rubber | (c) | Isoprene |
| (iv) | Polythene | (d) | H2C=CHCl |
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.
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.
