For these tests, only the observations and chemicals used need to be known, you do not need to worry about anything such as word or symbol equations
Glucose
heat the object you want to test with 'Benedict's' (or 'Fehlings') reagent, if glucose is present the reagent will turn from blue to orange
Starch
Apply iodine (usually with a pipette - although not necessary) to the object you are testing, if it turns from red to blue/black then starch is present (in an exam situation, it is best to write 'blue/black' or 'blue-black' than either 'blue' or 'black')
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