मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Answer the following. Write structure of natural rubber and neoprene rubber along with the name and structure of their monomers. - Chemistry

Advertisements
Advertisements

प्रश्न

Answer the following.

Write structure of natural rubber and neoprene rubber along with the name and structure of their monomers.

थोडक्यात उत्तर

उत्तर

Natural rubber Neoprene

Monomer: 

\[\begin{array}{cc}
\ce{CH3\phantom{....}}\\
|\phantom{......}\\
\phantom{.}\ce{CH2 = \underset{Isoprene}{C - CH} = CH2}
\end{array}\]

Monomer:

\[\begin{array}{cc}
\ce{Cl\phantom{.......}}\\
|\phantom{........}\\
\ce{CH2 =\underset{Chloroprene}{C - CH} = CH2}
\end{array}\]

Structure of natural rubber:

\[\begin{bmatrix}\begin{array}{cc}
\ce{H\phantom{............}}\ce{H}\\
|\phantom{.............}|\\\ce{- C - C = C - C -}\\
|\phantom{....}|\phantom{....}|\phantom{....}|\\
\phantom{}\ce{H\phantom{..}} \ce{CH3\phantom{..}} \ce{H\phantom{...}} \ce{H}
\end{array}\end{bmatrix}_\text{n}\]

Structure of neoprene:

\[\begin{array}{cc}
\ce{Cl\phantom{.......}}\\
|\phantom{........}\\
\ce{-[CH2 - C = CH - CH2]_{n}}-
\end{array}\]

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 15: Introduction to Polymer Chemistry - Exercises [पृष्ठ ३३८]

APPEARS IN

बालभारती Chemistry [English] 12 Standard HSC
पाठ 15 Introduction to Polymer Chemistry
Exercises | Q 3. iii. | पृष्ठ ३३८

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

Write any ‘two' uses of terylene.


Write the formulae of the raw materials used for preparation of Dextran.


Write the structure of melamine.


Draw the structures of veronal and thymine. 


Answer the following in one sentence.

Identify thermoplastic and thermosetting plastic from the following:

  1. PET
  2. Urea formaldehyde resin
  3. Polythene
  4. Phenol formaldehyde resin

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

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.

-(CO(CH2)4 - CONH(CH2)6NH-)n


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.

Is synthetic rubber better than natural rubber? If so, in what respect?


Write the structure of isoprene and the polymer obtained from it.


Write the name of the catalyst used for preparation of high density polythene polymer.


Monomer used for preparation of polyacrylonitrile is _____________


Monomers ethylene glycol and terephthalic acid undergo condensation polymerization to give polymer called ___________


write the structure of the monomer used in natural rubber.


Write chemical reaction for preparation of the following.

Neoprene


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?


Select the CORRECT match for both the polymers.


Which of the following polymers is a heteropolymer?


Identify the monomers used in the preparation of Novolac.


Identify the catalyst used in the manufacture of high density polythene.


Which among the following polymers is used to manufacture chemical containers?


Identify addition polymer from the following.


The commercial name of polyacrylonitrile is ______.


Name the polymers used in laminated sheets and give the name of monomeric units involved in its formation.


Which of the following is not a copolymer?


F2C = CF2 is monomer of the polymer -


Which of the following is an example of polyester?


Which of the following polymers is synthesized using a free radical polymerisation technique?


The catalyst used for the polymerisation of olefins is ______.


Which among the following polymers has high tensile strength and is used to obtain tyre cords?


Which of the foolowing polymer is used in the manufacture of insulators.


Answer the following.

Name and draw structure of the repeating unit in natural rubber.


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.


How the Bakelite is prepared? Give the steps involved in the preparation.


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.


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 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.


Name and draw structure of the repeating unit in natural rubber.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×