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Formation of a green edged flame on igniting the vapours evolved by heating an inorganic salt with a few mL of ethyl alcohol and conc. `H_(2)SO_(4)` i

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Formation of a green edged flame on igniting the vapours evolved by heating an inorganic salt with a few mL of ethyl alcohol and conc. `H_(2)SO_(4)` indicates the presence of :
A. tartarate
B. oxalate
C. borate
D. acetate
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Correct Answer - C
It is the correct answer. Ethyl borate is formed in the reactions. Its vapours burn with a green edged flame.
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