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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
Explain the following term: Homopolymers
The Zieglar-Natta catalyst is used in the preparation of _______.
(A) LDPE
(B) PHBV
(C) PAN
(D) HDPE
Draw the structures of veronal and thymine.
Answer the following in one sentence.
Identify 'B' in the following reaction:
\[\ce{H2N -(CH2)6 - NH2 + HOOC - (CH2)4 - COOH ->[N2][533 K]}\]'B'
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.
Name the polymer type in which following linkage is present.
\[\begin{array}{cc}\ce{- C - O -}\\||\phantom{.....}\\
\ce{O\phantom{.....}}\end{array}\]
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 |
Identify condensation polymers and addition polymers from the following.
-(CH2 - CH = CH - CH2 -)n
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.
Attempt the following:
What is meant by LDP and HDP? Mention the basic difference between the same with suitable examples.
Write the name of the catalyst used for preparation of high density polythene polymer.
Monomers ethylene glycol and terephthalic acid undergo condensation polymerization to give polymer called ___________
Monomer of natural rubber is __________
write the structure of the monomer used in natural rubber.
Mention two uses of LDP.
Write the name of one example of each polymer in which following repeating units.
\[\begin{array}{cc}
\ce{(-CF2-CF2-), -[NH-(CH2)5-CO] -, -(CH2-CH-), (-CH2-CH2-)}\\
\phantom{............................}|\\
\phantom{..............................}\ce{CN}
\end{array}\]
Which of the following is used as a substitute for wool?
Which among the following polymers is obtained from styrene and 1-3-butadiene?
Which of the following polymer is used in paints?
The INCORRECT match for the polymer with its application is:
\[\ce{{n} CH2 = CH2 ->[333 K - 343 K][6 - 7 atm, catalyst] X}\]
Which of the following is CORRECT about polymer 'X'?
Which of the following polymers is a heteropolymer?
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 pair of compounds is used as monomers for bakelite?
Which of the following polymer is used to make blankets?
The commercial name of polyacrylonitrile is ______.
Which of the following polymers, need atleast one diene monomer for their preparation?
(i) Dacron
(ii) Buna-S
(iii) Neoprene
(iv) Novolac
Trans - form of poly isoprene is:-
Polymer used in bullet proof glass is ______.
Which among the following polymers has high tensile strength and is used to obtain tyre cords?
Which of the foolowing polymer is used in the manufacture of insulators.
Answer the following.
Write the structure of isoprene and the polymer obtained from it.
Answer the following.
Write the structure of isoprene and the polymer obtained from it.
Write the structure of isoprene and the polymer obtained from it.
Write the preparation of viscose rayon.
Name and draw structure of the repeating unit in natural rubber.
Write the structure of isoprene and the polymer obtained from it.
The monomer used in preparation of teflon is ______.
Name and draw the 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.
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.
