Answer the following : (3 marks)
(i) Why is the use of aspartame limited to cold foods and drinks ?
(ii) How do antiseptics differ from disinfectants ?
(iii) Why do soaps not work in hard water ?
(i) Use of aspartame is limited to cold foods and soft drinks because it is unstable at cooking
(iii) Hard water contains insoluble calcium and magnesium chlorides which forms insoluble ppt
(scum) with soap and thus cannot be rinsed off easily.