Question

Write the test of starch....​

Answer 1

Answer:

take a potted plant with variegated leaves.

keep the plant in a dark room for three days so that starch gets used.

now put the plant in sunlight for six hours.

next,pluck a leaf and marj green areas and them on sheet of paper.

dip the leaf in boiling water for few min.

next,dip it into a alcohol beaker.

carefully place the above beaker in a water tub till it gets boiled.

after sometime dip it into iodine solution.

observe the colour obtained with earlier traced leaf.

Answer 2

Answer:

Take small quantity of the food items to be tested.

Put 2-3 drops of iodine solution on it.

Observe the colour of the food item.

Blue-black colour indicates the presence of starch in the tested food item.