K.C.S.E Biology Q & A - MODEL 2017PP1QN03
During a practical investigation on food tests, students were provided with the following reagents.
Sodium hydrogen carbonate
Dilute hydrochloric acid.
(a)Identify the food substance the students were to test.
(b) State the role of dilute hydrochloric acid and sodium hydrogen carbonate during the experiment.
(i) Dilute hydrochloric acid
(ii) Sodium hydrogen carbonate
a) Non reducing sugar;
b) (i) Hydrolyze/break down sucrose! non reducing sugars to reducing sugars/glucose/fructose;
(ii) neutralize the acid;