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प्रश्न
What is meant by a functional group? Explain with an example.
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उत्तर
Functional group: An atom or a group of atoms which determine the properties of an organiccompound is called a functional group.
For example: The alcohol group -OH is also known as an alcoholic group or hydroxyl group. The compounds in which the alcohol group is present are termed as alcohols. The general formula of an alcohol is R-OH (R is an alkyl group) like ethanol which has the molecular formula C2H5OH. All the compounds having this functional group will have similar properties.
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संबंधित प्रश्न
Write a balanced chemical equations for Heating of Ethanol at 170°C in the presence of conc. Sulphuric acid
State one relevant observation for the following
When the gaseous product obtained by dehydration of ethyl alcohol is passed through bromine water.
Fill in the blanks from the choices given within brackets:
The compound formed when ethanol reacts with sodium is____ (sodium ethanoate, sodium ethoxide, sodium propanoate).
............ is a functional group of the alcohol.
Fill in the following blank with suitable word:
The next higher homologue of ethane is ...............
Organic compounds having
functional group are known as
Why is ethanol used as a fuel?
What would be observed on adding a 5% alkaline potassium permanganate solution drop by drop to some warm ethanol in a test-tube? Write the name of the compound formed during the chemical reaction. Also write chemical equation of the reaction which takes place.
Name the gas evolved when ethanol reacts with sodium.
The usual disease caused by the excessive drinking of alcohol over a long period of time is:
(a) diabetes
(b) cataract
(c) cirrhosis
(d) arthritis
How is the spurious alcohol obtained?
Identify the functional group of the CH3COOH ?
An organic compound 'P' is a constituent of wine. 'P' on reacting with acidified K2Cr2O7 forms another compound 'Q'. When a piece of sodium is added to 'Q' a gas 'R' evolves which burns with a pop sound. Identify P, Q and R and write the chemical equations of the reactions involved.
Write the rnolecular formula and structural forrnula of ethanol.
Convert ethanol into ethene using a solid dehydrating agent. Give only a balanced equation.
Write the structural formulae of the following compound:
Ethane
Dehydration of ethanol by conc. Sulphuric acid forms ______
The organic compounds having functional group are known as ______.
Look at below figure and answer the following questions.
- What change would you observe in the calcium hydroxide solution taken in tube B?
- Write the reaction involved in test tubes A and B respectively.
- If ethanol is given instead of ethanoic acid, would you expect the same change?
- How can a solution of lime water be prepared in the laboratory?
Give the balanced chemical equation of the following reaction:
Oxidation of ethanol by acidified potassium dichromate.
