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प्रश्न
Give a chemical test to distinguish between Saturated and Unsaturated?
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उत्तर
Chemical test to distinguish :
Saturated and Unsaturated
Chemical test:- Bromine water test, if unsaturated hydrocarbons are added to it then the solution turns colourless. The unsaturated hydrocarbon decolourise bromine water. Whereas no change takes place to the solution when saturated hydrocarbons are added to bromine water.
Physical test:- Distinction between saturated and unsaturated hydrocarbons: Saturated hydrocarbons burn in the air with clear (blue) flame, whereas burning of unsaturated hydrocarbons (alkenes and alkynes) gives sooty (yellowish) flame. Saturated hydrocarbons contain less percentage of carbon as compared to unsaturated hydrocarbons; therefore, they get completely oxidised by the oxygen present in the air on burning. Unsaturated hydrocarbons require a lot of oxygen for complete oxidation whose demand is not fulfilled by air. Due to this reason, unsaturated hydrocarbons burn with a sooty flame. The sooty flame contains partially burnt carbon in the form of soot.
संबंधित प्रश्न
Fill in the blank:
Organic compounds are essentially_________compounds. They
show ___________Reaction and their rates are ___________.
What is an alkyl group?
What is hydrogenation? How hydrogenation of ethene occurs? Give one use of hydrogenation.
Explain the following:
Ethene and ethyne burn with sooty luminous flame
Ethanol can be converted to ethene which can be changed to ethane.
Choose the correct word or phrase from the options given below to complete the following sentences:
The conversion of ethene to ethane is an example of ________(Hydration, hydrogenation).
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.
Choose the correct answer:
The formation of 1,2 -dibromoethane from ethene and bromine is an example of
Name the following:
The property of elements by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure.
Draw the structural formula for the following:
2, 3-dimethyl butane
Give the structural formula of the following organic compound:
But-2-yne
