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प्रश्न
Write the formulae of the raw materials used for preparation of Dextran.
उत्तर
Raw materials used for the preparation of Dextron:
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संबंधित प्रश्न
Write the chemical reaction to prepare novolac polymer.
Bakelite is the polymer of:
(a) Benzaldchyde and phenol
(b) Acetaldehyde and phenol
(c) Formaldehyde and phenol
(d) Formaldehyde and benzyl alcohol
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(A) LDPE
(B) PHBV
(C) PAN
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Answer the following in one sentence.
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Answer the following in one sentence.
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- Urea formaldehyde resin
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- Phenol formaldehyde resin
Answer the following.
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Answer the following.
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H2N–(CH2)5 – COOH
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-(CH2 - CH = CH - CH2 -)n
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-(CO(CH2)4 - CONH(CH2)6NH-)n
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Define rubber.
Identify the CORRECT statement regarding the following polymer.
\[\begin{array}{cc}
\phantom{....}\ce{O}\phantom{............}\ce{O}\phantom{...................}\ce{H}\phantom{.....}\\
\phantom{....}||\phantom{.............}||\phantom{...................}|\phantom{......}\\
\ce{-[C - (CH2)4 - C - NH - (CH2)6 - N -]_{{n}}}
\end{array}\]
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Which among the following polymers can NOT be remoulded?
Which of the following catalysts is used in preparation of terylene?
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Which among the following monomers is used to prepare Teflon?
Which of the following monomers is used in the manufacture of Neoprene rubber?
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| (iii) Cellulose | (c) Phosphodiester linkage |
| (iv) Protein | (d) Amide linkage |
| v) RNA |
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Which of the following polymers do not involve cross linkages?
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Write the structure of isoprene and the polymer obtained from it.
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| 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.
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.
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.
Write the structure of isoprene and the polymer obtained from it.
Write the structure of isoprene and the polymer obtained from it.
