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प्रश्न
Answer the following.
Is synthetic rubber better than natural rubber? If so, in what respect?
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उत्तर
Yes, synthetic rubber is superior to natural rubber.
1. Synthetic rubber has high mechanical strength.
2. It has high abrasion resistance.
3. It is resistant to petroleum, vegetable oils, light as well as heat.
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संबंधित प्रश्न
Write the reactions involved in the preparation of PVC
Explain the following term: Homopolymers
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 formulae of the raw materials used for preparation of Dextran.
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.
Choose the correct option from the given alternatives.
Which of the following is made up of polyamides?
Answer the following in one sentence.
What type of intermolecular force leads to high-density polymer?
Answer the following.
Write the reaction of the formation of Nylon 6.
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
Name and draw structure of the repeating unit in natural rubber.
Attempt the following:
Write the chemical reactions involved in the manufacture of Nylon 6,6.
Write preparation, properties, and uses of Teflon.
write the structure of the monomer used in natural rubber.
Write preparation of low density polythene.
Write chemical reactions for the preparation of high-density polythene.
Define rubber.
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:
\[\begin{array}{cc}
\ce{[-C-CH2-NH-C-(-CH2)5 NH -]_{{n}}}\\
\phantom{}||\phantom{.............}||\phantom{................}\\
\phantom{}\ce{O}\phantom{.............}\ce{O}\phantom{................}
\end{array}\]
How many isoprene units are present in abscisic acid?
Identify the INCORRECT match.
Which of the following polymers is obtained from chloroprene?
Novolac is obtained from ____________.
Which among the following catalysts is used in the preparation of dacron?
Which among the following monomers is used to prepare Teflon?
Which of the following polymer is used to make blankets?
Which among the following is an example of addition 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 |
Match the polymers given in Column I with their repeating units given in Column II.
| Column I | Column II |
| (i) Acrilan |
(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)  |
| (f) \[\begin{array}{cc} \ce{-(CH2 - CH)\underset{n}{-}}\\ \phantom{.....}|\\ \phantom{......}\ce{Cl} \end{array}\] |
Phenol and formaldehyde undergo condensation to give a polymar (A) which on heating with formaldehyde gives a thermosetting polymer (B). Name the polymers. Write the reactions involved in the formation of (A). What is the structural difference between two polymers?
F2C = CF2 is monomer of the polymer -
Which of the following polymers is synthesized using a free radical polymerisation technique?
Nylon threads are made of ______.
Which of the following polymers do not involve cross linkages?
Which of the following polymer is used for manufacturing of buckets, dustbins, pipes, etc?
Which among the following polymers has high tensile strength and is used to obtain tyre cords?
Identify the monomer used to prepare neoprene.
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.
Name and draw the structure of the repeating unit in natural rubber.
Write the preparation of viscose rayon.
Write the structure of isoprene and the polymer obtained from it.
Name and draw the structure of the repeating unit in natural rubber.
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.
Name and draw structure of the repeating unit in natural rubber.
Name and draw the structure of the repeating unit in natural rubber.
