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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
What are esters ?
When you add a few drops of acetic acid to a test-tube containing sodium bicarbonate powder, which one of the following is your observation?
(A) No reaction takes place
(B) A colourless gas with pungent smell is released with brisk effervescence
(C) A brown coloured gas is released with brisk effervescence
(D) Formation of bubbles of a colourless and odourless gas
Give balanced chemical equations for Sodium ethanoate to methane.
Draw the structure for the following compound:
Propanoic acid
Write the formula of methanoic acid.
Three organic compounds A, B and C have the following molecular formulae: C4H10O
Which compound contains a carboxyl group? Write its name and structural formula.
An organic compound X of molecular formula C2H4O2 gives brisk effervescence with sodium hydrogen carbonate. Give the name and formula of X.
Name the product formed and give the appropriate chemical equation for the following:
Sodium reacting with ethyl alcohol.
Give the structural formulae of acetic acid.
Define glacial acetic acid?
How Will You Carry Out the Following Conversions?
Ehane to acitic acid
Fill in the blank with appropriate word/words.
Denatured alcohol is a mixture of _____ and _______
State how the following conversions can be carried out:
Ethyl chloride to Ethyl alcohol
When sodium hydrogen carbonate is added to ethanoic acid, a gas evolves. Consider the following statements about the gas evolved.
- It turns lime water milky.
- It is evolved with brisk effervescence.
- It has a smell of burning sulfur.
- It is also a by-product of respiration.
Explain the following reaction with an example.
Esterification
Give a chemical reaction in which a catalyst is used.
Observe the figure and write the answers to the following questions.
- Write the name of the reaction shown in the following figure.
- Write the above chemical reaction in the form of a balanced equation.
- Write the name of the product produced in the above reaction, write a use.
- Write the name of the catalyst used in the above reaction.
In the presence of the acid catalyst, ethanoic acid reacts with ethanol and ______ ester is produced.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
Give the balanced chemical equation of the following reaction:
Oxidation of ethanol by acidified potassium dichromate.
