Question

write an experiment to test for starch​

Answer 1

Answer:

Put a cracker on a plate, and test it for starch using a drop of the iodine solution. Chew a second cracker for 60 seconds until it is completely mixed with saliva. Spit out the chewed cracker onto another plate, and add a drop of iodine. You may be surprised to observe that the iodine no longer changed colors.

Answer 2

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Take a piece of the food item. Put 2-3 drops of dilute iodine solution on it. If the colour of the food item becomes blue-black, then it indicates the presence of starch in the food item.

(i) Food + Iodine - Blue-black colour (starch present)

(ii) Food + Iodine - No blue-black colour (no starch present)

HOPE THIS HELPS YOU ☝️....