test and practical

Question 1

test for reducing sugars

Answer 1

heat food samples with 2cm^3 of benedicts reagent
observe colour
positive: change colour with precipitate
brickred having the most amount of sugar

Question 2

define precipitate

Answer 2

a solid suspended in a solutions

Question 3

non-reducing sugars test

Answer 3

Heat food sample with 2cm^3 of dilute hydrochloric acid
neutrilise with sodium carbonate
heat with benedicts reagent
positive : precipitate with colour