English

Answer the following in one sentence. Define the term: Vulcanization

Advertisements
Advertisements

Question

Answer the following in one sentence.

Define the term: Vulcanization

Definition
One Line Answer
Advertisements

Solution

The process by which a network of cross-links is introduced into an elastomer is called vulcanization.

shaalaa.com
  Is there an error in this question or solution?
Chapter 15: Introduction to Polymer Chemistry - Short Answer Questions (Type-I)

APPEARS IN

SCERT Maharashtra Chemistry [English] Standard 12 Maharashtra State Board
Chapter 15 Introduction to Polymer Chemistry
Short Answer Questions (Type-I) | Q 3.1
Balbharati Chemistry [English] Standard 12 Maharashtra State Board
Chapter 15 Introduction to Polymer Chemistry
Exercises | Q 2. vi. 2) | Page 338

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Write any ‘two’ uses of terylene.


Write the reactions involved in the preparation of  PVC


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. 


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.

Identify thermoplastic and thermosetting plastic from the following:

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

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.

Write name and formula of raw material from which bakelite is made.


Identify condensation polymers and addition polymers from the following.

-(CH2 - CH = CH - CH2 -)n


Write preparation, properties, and uses of Teflon.


Answer the following.

Write main specialities of Buna-S, Neoprene rubber?


Nylon 6, 6 is a condensation polymer of hexamethylenediamine and _____________


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


Write preparation of low density polythene.


Write chemical reaction for preparation of the following.

Buna-S


Define rubber.


Explain the reactions involved in the preparation of viscose rayon.


The following structure represents the polymer:

\[\begin{array}{cc}
\ce{[-C-CH2-NH-C-(-CH2)5 NH -]_{{n}}}\\
\phantom{}||\phantom{.............}||\phantom{................}\\
\phantom{}\ce{O}\phantom{.............}\ce{O}\phantom{................}
\end{array}\]


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


Which of the following polymer is used in paints?


Select the CORRECT match for both the polymers.


\[\ce{{n} CH2 = CH2 ->[333 K - 343 K][6 - 7 atm, catalyst] X}\]

Which of the following is CORRECT about polymer 'X'?


Which of the following polymers is obtained from chloroprene?


Which of the following catalysts is used in preparation of terylene?


Identify the monomers used in the preparation of Novolac.


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


Which of the following pair of compounds is used as monomers for bakelite?


Identify addition polymer from the following.


Which of the following polymers is used as insulation for cables?


The commercial name of polyacrylonitrile is ______.


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

(i) Dacron

(ii) Buna-S

(iii) Neoprene

(iv) Novolac


Match the polymers given in Column I with their repeating units given in Column II.

Column I Column II
(i) Acrilan

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

(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?


Trans - form of poly isoprene is:-


Polymer used in bullet proof glass is ______.


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


The monomer of natural rubber is ______.


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


Name the compound which reacts with formaldehyde to produce ethyl alcohol.


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


Another name of terylene is ______.


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

Write the structure and name of the monomer of Nylon-6.


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.


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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×