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Questions
Write the structure and name of monomer of Natural rubber.
Write the name and structure of the monomer of the following polymer:
Natural rubber
Name the monomer of natural rubber.
Give the structure of the monomer of natural rubber.
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Solution
Name of monomer of natural rubber: Isoprene (2-Methyl-1, 3-butadiene)
Structure:
\[\begin{array}{cc}
\ce{CH3}\phantom{.....}\\
|\phantom{.........}\\
\ce{CH2 = C - CH = CH2}
\end{array}\]
Notes
Students should refer to the answer according to their questions.
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\phantom{....}\ce{O}\phantom{............}\ce{O}\phantom{...................}\ce{H}\phantom{.....}\\
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| Column I | Column II |
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| (iii) Cellulose | (c) Phosphodiester linkage |
| (iv) Protein | (d) Amide linkage |
| v) RNA |
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| Column I | Column II |
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(a) \[\begin{array}{cc} |
| (ii) Polystyrene | (b) \[\begin{array}{cc} \ce{Cl}\phantom{.......}\\ |\phantom{........}\\ \phantom{}\ce{-(CH2 - C = CH - CH2)\underset{n}{-}} \end{array}\] |
| (iii) Neoprene | (c) \[\begin{array}{cc} \phantom{................................}\ce{CN}\\ \phantom{..............................}|\\ \ce{-(CH2 - CH = CH - CH2 - CH2 - CH)\underset{n}{-}} \end{array}\] |
| (iv) Novolac | (d) \[\begin{array}{cc} \ce{-(CH2 - CH)\underset{n}{-}}\\ \phantom{.....}|\\ \phantom{.......}\ce{CN} \end{array}\] |
| (v) Buna—N | (e) ![]() |
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| (iv) | Polythene | (d) | H2C=CHCl |
Name and draw structure of the repeating unit in natural rubber.
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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.

