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  4. A gas decolourises alkaline KMnO4 solution butdoes not give precipitate with AgNO3. It is

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Q. A gas decolourises alkaline $KMnO_4$ solution butdoes not give precipitate with $AgNO_3$. It is

Hydrocarbons

Solution:

As $C_2H_4$ (alkene) is not acidic in nature, therefore, it does not give any precipitate with $AgNO_3$. However, it is oxidised with dilute alkaline $KMnO_4$ (Baeyer’s reagent) to glycol
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