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प्रश्न
Vinegar is greyish in colour with a particular taste. Explain.
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उत्तर
Vinegar, commonly called 'Sirka', is a dilute (4-5 percent) solution of acetic acid. The presence of colouring matter gives it a greyish colour, while the presence of some other organic acids and organic compounds imparts to it the usual taste and flavour.
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संबंधित प्रश्न
Equation for the reaction when compound A is bubbled through bromine dissolved in carbon tetrachloride is as follows:
\[\begin{array}{cc}
\ce{A ->[Br2/CCl4] CH2Br}\\
\phantom{.........}|\\
\phantom{.................}\ce{CH2Br}\\
\end{array}\]
- Draw the structure of compound A.
- State your observation during this reaction.
Draw the structural formula for the 2-propanol compound. What compound is used to describe this compound taken together?
What is an alkyl group?
Fill in the blank with appropriate word/words.
For test of unsaturation _____is used.
Give the name and structural formula of:
A saturated Hydrocrbon
The list of some organic compounds is given below:
ethanol, ethane, methane, ethyne, and ethene
From the above list, name a compound:
- formed by the dehydration of ethanol by concentrated sulphuric acid.
- which forms methanoic acid on oxidation in the presence of copper at 200°C.
- which has vapour density 14 and turns acidic potassium permanganate colourless.
- which forms chloroform on halogenation in the presence of sunlight.
- which decolourises bromine solution in carbon tetrachloride.
Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol
From the compounds given above, name
Homologue of homologous series with general formula CnH2n.
Compound A is bubbled through bromine dissolved in carbon tetrachloride, and the product is CH2Br – CH2Br.
\[\ce{A ->[Br2/CCl4] CH2Br - CH2Br}\]
- Draw the structural formula of A.
- What type of reaction has A undergone?
- What is your observation?
- Name (not formula) the compound formed when steam reacts with A in the presence of phosphoric acid.
- What is the procedure for converting the product of (iv) back to A?
Give the structural formulae of the following :
Ethanoic acid
Name the gas which turns moist red litmus blue.
