Question

how will you test the presence of starch in sugar

Answer 1

by the use of iodine.
the colour of the leaf changes to blue black due to the presence of starch.

Answer 2

Answer:

Glucose is a kind of sugar our body uses the most. Put some of the glucose into the test tube. Add a few drops of Benedict’s solution. Carefully heat the test tube in a water bath. The colour of glucose will turn orange.