Boric acid is heated with ethanol and a few drops of conc. H2SO4 and the vapour is ignited. The flame is

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Boric acid is heated with ethanol and a few drops of conc. $H X_{2} SO X_{4}$ and the vapour is ignited. The flame is

Agreen-edged
Bgolden yellow
Clilac
Dcrimson

Answer: A

Boric acid forms the volatile ethyl borate ester, which burns with a green-edged flame. Crimson, lilac and golden yellow are flame colours of strontium or lithium, potassium and sodium respectively.

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Boric acid is heated with ethanol and a few drops of conc. HX2​SOX4​ and the vapour is ignited. The flame is

Answer: A

More questions on Independent group: sulphate, phosphate, borate

Boric acid is heated with ethanol and a few drops of conc. $H X_{2} SO X_{4}$ and the vapour is ignited. The flame is