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Maharashtra State BoardSSC (English Medium) 10th Standard

Explain the Following Term with Example.Monomer

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Question

Explain the following term with example.
Monomer

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Solution

Monomer: A monomer is a molecule that forms the basic unit for polymers. They may be considered as building blocks from which proteins are made. Monomers may bind to other monomer unit to form a repeating chain molecule. Monomers may be either natural or synthetic in origin.
For example: Ethylene, vinyl chloride, styrene etc.

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Chapter 9: Carbon Compounds - Exercise [Page 133]

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In order to study saponification reaction, we first prepare 20% solution of sodium hydroxide. If we record the temperature of this solution just after adding sodium hydroxide flakes to water and also test its nature using litmus, it may be concluded that the process of making this solution is

(A) exothermic and the solution is alkaline

(B) endothermic and the solution is alkaline

(C) endothermic and the solution is acidic

(D) exothermic and the solution is acidic


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(c) C7H14O2
(d) C8H16O2


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(i) Odour
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(2) red litmus blue 

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(4) red litmus colourless 


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Reason (R): When esters react with sodium hydroxide an alcohol and sodium salt of carboxylic acid are obtained.


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  3. Write the chemical reactions involved and name the reactions.

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