Question
Explain the terms polymer and monomer.

Answer

Polymers are high molecular mass substances consisting of a very large number of simple repeating structural units joined together through covalent bonds in a regular fashion. Polymers are also called macromolecules. Some examples are polythene, nylon-66, bakelite, rubber, etc. Monomers are the. simple and reactive molecules from which the polymers are prepared either by addition or condensation polymerisation. Some examples are ethene, vinyl chloride, acrylonitrile, phenol and formaldehyde etc.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The rate of a particular reaction triples when temperature changes from $50^\circ C$ to $100^\circ C.$ Calculate the activation energy of the reaction.$[\log 3 = 0.4771;\ R = 8.314\ JK^{-1}\ mol^{-1}].$
Depict the galvanic cell in which the reaction: $Zn(s) + 2Ag^+(aq) → Zn^{2+}(aq) + 2Ag(s)$ takes place.
Further indicate what are the carriers of the current inside and outside the cell. State the reaction at each electrode.
Write a note on Double Helical structure of DNA.
Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Graphite is a good conductor of electricity however diamond belongs to the category of insulators.
Reason: Graphite is soft in nature on the other hand diamond is very hard and brittle.
Explain how vacancies are introduced in an ionic solid when a cation of higher valence is added as an impurity in it.
What causes brownian motion in colloidal dispersion?
  1. Following reactions occur at cathode during the electrolysis of aqueous silver chloride solution:
$Ag^+(aq) + e^- \rightarrow Ag(s) E^o= +0.80\ V$
$H^+(aq) + e^- \rightarrow H_2(g) E^o = 0.00\ V$
On the basis of their standard reduction electrode potential $(E^o)$ values, which reaction is feasible at the cathode and why?
  1. Define limiting molar conductivity. Why conductivity of an electrolyte solution decreases with the decrease in concentration?
Account for the following:
  1. Aromatic carboxylic acids do not undergo Friedel-Crafts reaction.
  2. $pK_a$ value of $4-$nitrobenzoic acid is lower than that of benzoic acid.
How is the solubility of a sparingly soluble salt determined by measuring conductivity?
Match the items of Column I and Column II.
 
Column I
 
Column II
(i)
Diamond.
(a)
Short interval of time.
(ii)
Instantaneous rate.
(b)
Ordinarily rate of conversion is imperceptible.
(iii)
Average rate.
(c)
Long duration of time.