English

Define rubber. - Chemistry

Advertisements
Advertisements

Question

Define rubber.

Definition
Advertisements

Solution

Polymers which are elastic in nature are called rubber.

shaalaa.com
  Is there an error in this question or solution?
Chapter 15: Introduction to Polymer Chemistry - Long Answer Questions

APPEARS IN

SCERT Maharashtra Chemistry [English] 12 Standard HSC
Chapter 15 Introduction to Polymer Chemistry
Long Answer Questions | Q 1.1

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Write any ‘two’ uses of terylene.


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

 


The Zieglar-Natta catalyst is used in the preparation of _______.

(A) LDPE

(B) PHBV

(C) PAN

(D) HDPE


Write the structures of the monomers used for getting the following polymers

Melamine – formaldehyde 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 in one sentence.

Identify 'B' in the following reaction:

\[\ce{H2N -(CH2)6 - NH2 + HOOC - (CH2)4 - COOH ->[N2][533 K]}\]'B'


Answer the following in one sentence.

Define the term: Vulcanization


Answer the following.

Write the reaction of the formation of Nylon 6.


Answer the following.

Write the reaction of the formation of Terylene.


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

Draw the structures of polymers formed from the following monomers

\[\ce{n HOOC–R–COOH + n HO–R'–OH}\]


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


Attempt the following:

Explain the vulcanisation of rubber. Which vulcanizing agents are used for the following synthetic rubber?
a. Neoprene
b. Buna-N


Write the reaction involved in the formation of:

Bakelite


Monomer of natural rubber is __________


write the structure of the monomer used in natural rubber.


Mention two uses of LDP.


Write chemical reaction for preparation of the following.

Neoprene


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.


Write two uses and two properties of polythene.


Which among the following polymers is used for making handles of cooker?


Which of the following polymer is used in paints?


Identify additional polymers from the following.

I. \[\begin{array}{cc}
\ce{-(CH2 - CH -)_{{n}}}\\
\phantom{....}|\\
\phantom{.......}\ce{C6H5}
\end{array}\]

II. \[\ce{-(CH2 - CH = CH - CH2 -)_{{n}}}\]

III. \[\ce{-(CO(CH2)4 - CONH(CH2)6NH -)_{{n}}}\]

IV.


The INCORRECT match for the polymer with its application is:


Which of the following polymers is obtained from chloroprene?


Novolac is obtained from ____________.


Which of the following polymers is a heteropolymer?


Which of the following compounds is used to prepare orlon?


Which among the following polymers is obtained from CH2 = CH – CN by polymerisation?


Identify the monomers used in the preparation of Novolac.


Which of the following monomers is used in the manufacture of Neoprene rubber?


Which among the following polymers is an example of addition polymer?


Which of the following polymers, need atleast one diene monomer for their preparation?

(i) Dacron

(ii) Buna-S

(iii) Neoprene

(iv) Novolac


Which of the following products is formed when benzaldehyde is treated with CH3MgBr and the addition product so obtained is subjected to acid hydrolysis?


The monomer of Teflon is ______.


F2C = CF2 is monomer of the polymer -


Nylon threads are made of ______.


Polymer used in bullet proof glass is ______.


Which of the following polymer is used for manufacturing of buckets, dustbins, pipes, etc?


Identify the monomer used to prepare neoprene.


Write the preparation of viscose rayon.


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


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


Match the following pairs:

Polymer Monomer
(i) Teflon (a) CH2 = CH2
(ii) PVC (b) CF2 = CF2
(iii) Natural rubber (c) Isoprene
(iv) Polythene (d) H2C=CHCl

The monomer used in preparation of teflon is ______.


Write the structure and name of monomer of Natural rubber.


Name and draw the 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.


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.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×