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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
Name the alkyl radical and the functional group of the following organic compound:
C3H7CHO
Ethene reacts with 1% cold alkaline KMnO4 to give
What type of reaction is common to both of these compounds?
Write the equation for the laboratory preparation of Ethyne (acetylene) from calcium carbide.
Name the addition product formed between ethane and water.
Distinguish between the saturated hydrocarbon ethane and the unsaturated hydrocarbon ethene by drawing their structural formulae.
Name the following:
A hydrocarbon which contributes towards the greenhouse effect.
Write a balanced chemical equation for the following:
Action of water on calcium carbide
Give the structural formulae for the following:
2-propanol
Give the structural formula of the following:
1-propanal
