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प्रश्न
Define rubber.
उत्तर
Polymers which are elastic in nature are called rubber.
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संबंधित प्रश्न
Write the reactions involved in the preparation of PVC
Write the chemical reaction to prepare novolac polymer.
Explain the following term: Homopolymers
Based on molecular forces, what type of polymer is neoprene?
The Zieglar-Natta catalyst is used in the preparation of _______.
(A) LDPE
(B) PHBV
(C) PAN
(D) HDPE
Write the structure of melamine.
Draw the structures of veronal and thymine.
Write the monomers of the following polymer :
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'
Draw the structures of polymers formed from the following monomers
\[\ce{n HOOC–R–COOH + n HO–R'–OH}\]
Name and draw structure of the repeating unit in natural rubber.
Identify condensation polymers and addition polymers from the following.
\[\begin{array}{cc}\ce{-(CH2 - CH -)_{n}}\\
\phantom{....}|\\\ce{\phantom{.......}C6H5}
\end{array}\]
Identify condensation polymers and addition polymers from the following.
Attempt the following:
Write the chemical reactions involved in the manufacture of Nylon 6,6.
Attempt the following:
Write preparation, properties and uses of Teflon.
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 chemical reaction for preparation of the following.
Neoprene
Which among the following polymers is obtained from styrene and 1-3-butadiene?
Which of the following is the monomer of neoprene?
Which of the following polymers is obtained from chloroprene?
Which of the following polymers is a heteropolymer?
Identify the polymer obtained by polymerization of n moles of acrylonitrile.
Which among the following polymers can NOT be remoulded?
Which of the following catalysts is used in preparation of terylene?
Identify the monomers used in the preparation of Novolac.
Which among the following monomers is used to prepare Teflon?
Which of the following monomers is used in the manufacture of Neoprene rubber?
Which of the following pair of compounds is used as monomers for bakelite?
Identify addition polymer from the following.
Which of the following is not a semisynthetic polymer?
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 products is formed when benzaldehyde is treated with CH3MgBr and the addition product so obtained is subjected to acid hydrolysis?
Which of the following polymers is synthesized using a free radical polymerisation technique?
Nylon threads are made of ______.
Identify the monomer used to prepare neoprene.
Which of the foolowing polymer is used in the manufacture of insulators.
The monomer of natural rubber is ______.
Answer the following.
Name and draw structure of the repeating unit in natural rubber.
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 preparation of viscose rayon.
Write the structure of isoprene and the polymer obtained from it.
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 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.
Name and draw the structure of the repeating unit in natural rubber.
