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प्रश्न
Explain the following term with example.
Monomer
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उत्तर
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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संबंधित प्रश्न
A student adds 2 mL of acetic acid to a test tube containing 2 mL of distilled water. He then shakes the test tube well and leaves it to settle for some time. After about 5 minutes he observes that in the test tube there is :
(A) a clear transparent colourless solution
(B) a clear transparent pink solution
(C) a precipitate settling at the bottom of the test tube
(D) a layer of water the layer of acetic acid
A student adds a few drops of ethanoic acid to test tubes X, Y and Z containing aqueous solutions of sodium chloride, sodium hydroxide and sodium carbonate, respectively. If he now brings a burning splinter near the mouth of the test tubes immediately after adding ethanoic acid in each one of them, in which of the test tube or test tubes the flame will be extinguished?
(A) X and Y
(B) Y and Z
(C) X and Z
(D) only Z
Draw the structure for the following compound:
Propanoic acid
Give the common name and IUPAC name of C2H5OH.
The organic acid present in vinegar is ______.
What is an oxidising agent?
How is ethanoic acid obtained from ethanol? Write down the chemical equation of the reaction involved.
The structural formula of an ester is :
Write the formula of the acid and the alcohol from which it is formed.
Name the substance used to change acetic acid to acetic anhydride?
What do you observe when acetic acid is added to ethyl alcohol in the presence of sulphuric acid?
Name the functional group present in the following compound:
C2H5CHO
Explain the following term with example.
Reduction
Name the following:
A toxic alcohol
What is the action of acetic acid with litmus paper?
State how the following conversions can be carried out:
Ethene to Ethyl alcohol.
Write a balanced chemical equation for the following:
A mixture of sodalime and sodium acetate is heated.
State are relevant observations for following reactant:
Addition of ethyl alcohol to acetic acid in presence of conc. H2SO4
Distinguish between esterification and saponification reactions with the help of chemical equations for each.
Write the chemical equation for the following:
Saponification Reaction
Give the balanced chemical equation of the following reaction:
Combustion of ethanol.
