Question

(1) How would you check the presence of starch in leaves?
(2) Nehabhabhi takes two types of Aber, natural and synthetic. She does not know which one
is natural fiber and which is synthetic fiber. Which activity you will suggest to identify the
fibers?
(3) You are given three solutions A, B and c acid, base and neutral respectively, it is not
possible to identify them just by looking how will you identify the type of solution
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Answer 1

Answer:

(1) Iodine solution is used to test leaves for the presence of starch. You need to: heat a plant leaf in boiling water for 30 seconds (this stops its chemical reactions) heat it in boiling ethanol for a few minutes (this removes most of its colour)