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Copy and complete the following by filling in the blanks 1 to 5 with appropriate words/terms/ phrases:
To test the leaf for starch, the leaf is boiled in water…….(1) It is next boiled in methylated spirit to……(2)The leaf is placed in warm water to soften it. It is then placed in a dish and ......... (3) solution is added. The region, which contains starch, turns...(4)and the region, which does not contain starch, turns ...... (5)

Text Solution

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(i) kill the cells
(ii) remove chlorophyll/decolourise the leaf
(iii) Iodine/Potassium iodide/KI/`I_(2)`
(iv) blue black/blackish blue/dark blue/Indigo
v) yellowish brown/reddish brown/yellow/golden
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