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Alcohol in starch identification

Why, while checking for starch in a leaf, it is dipped in ALCOHOL before being directly boiled in water?................. a.Alcohol is flammable b.For better heating c.Alcohol is acidic d.Alcohol is basic.............. and why?

Note by Agr Amul
3 years, 4 months ago

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But the correct option is a. But how???

Agr Amul - 3 years, 4 months ago

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Hi! Would you mind sharing the source of this question? Are you in Grade-10? The answer can quite be (a) but scientifically and more importantly- for the experiment to be carried out properly- its instinctive that the chlorophyll has to be removed and that's exactly what Alcohol does

Krishna Ar - 3 years, 4 months ago

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Well I was solving one of the science question papers, online. I found this question there. By the way thanx.

Agr Amul - 3 years, 4 months ago

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Unfortunately none of the options you've given are right. The correct answer is however the simple fact that alcohol removes(denaturizes/decolorizes) the chlorophyll pigment in leaf

Krishna Ar - 3 years, 4 months ago

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