Advertisements
Advertisements
प्रश्न
Write the structure of isoprene and the polymer obtained from it.
उत्तर
1) Isoprene:
\[\begin{array}{cc}\ce{H2C = C - C = CH2}\\
|\phantom{....}|\\\ce{\underset{(isoprene)}{CH3 H}}\end{array}\]
2) Polymer of isoprene (polyisoprene or natural rubber):
\[\begin{bmatrix}\begin{array}{cc}\ce{H\phantom{............}}\ce{H}\\
|\phantom{.............}|\\\ce{- C - C = C - C -}\\
|\phantom{....}|\phantom{....}|\phantom{....}|\\
\phantom{.}\ce{H}\phantom{...}\ce{CH3}\phantom{.}\ce{H}\phantom{...}\ce{H}\phantom{.}\\
\end{array}\end{bmatrix}_\text{n}\]
(polyisoprene/rubber)
APPEARS IN
संबंधित प्रश्न
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
Write the monomers of the following polymer :
Choose the correct option from the given alternatives.
Which of the following is made up of polyamides?
Answer the following in one sentence.
Identify 'A' in the following reaction:
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.
Draw the structures of polymers formed from the following monomers
H2N–(CH2)5 – COOH
Answer the following.
Write name and formula of raw material from which bakelite is made.
Identify condensation polymers and addition polymers from the following.
-(CO(CH2)4 - CONH(CH2)6NH-)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
Answer the following.
Write main specialities of Buna-S, Neoprene rubber?
Nylon 6, 6 is a condensation polymer of hexamethylenediamine and _____________
Monomers ethylene glycol and terephthalic acid undergo condensation polymerization to give polymer called ___________
Mention two uses of LDP.
Write the name of one example of each polymer in which following repeating units.
\[\begin{array}{cc}
\ce{(-CF2-CF2-), -[NH-(CH2)5-CO] -, -(CH2-CH-), (-CH2-CH2-)}\\
\phantom{............................}|\\
\phantom{..............................}\ce{CN}
\end{array}\]
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 of the following is used as a substitute for wool?
The following structure represents the polymer:
\[\begin{array}{cc}
\ce{[-C-CH2-NH-C-(-CH2)5 NH -]_{{n}}}\\
\phantom{}||\phantom{.............}||\phantom{................}\\
\phantom{}\ce{O}\phantom{.............}\ce{O}\phantom{................}
\end{array}\]
Which among the following polymers is used for making handles of cooker?
Which of the following polymer is used in paints?
The INCORRECT match for the polymer with its application is:
Which of the following is the monomer of neoprene?
Which of the following polymers is obtained from chloroprene?
Novolac is obtained from ____________.
Which among the following polymers can NOT be remoulded?
Which among the following polymers is obtained from CH2 = CH – CN by polymerisation?
Which among the following monomers is used to prepare Teflon?
Which of the following polymers is prepared by using phenol?
Which among the following polymers is an example of addition polymer?
Which of the following polymers is used as insulation for cables?
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
Trans - form of poly isoprene is:-
Polymer used in bullet proof glass is ______.
Which of the following is a polymer of enzyme?
The monomer of natural rubber is ______.
Answer the following.
Name and draw structure of the repeating unit in natural rubber.
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.
Write the structure of isoprene and the polymer obtained from it.
How the Bakelite is prepared? Give the steps involved in the preparation.
Name the compound which reacts with formaldehyde to produce ethyl alcohol.
Write the preparation of viscose rayon.
Write the name of the monomer of natural rubber.
Write the structure and name of monomer of Nylon-6.
Name and draw structure of the repeating unit in natural rubber.
Name and draw structure of the repeating unit in natural rubber.
Write the structure of isoprene and the polymer obtained from it.