Cq Food Additives And Drugs

Food additives and drugs

Page 1

Food additives and drugs : 1995 3.

Some of the ingredients present in a certain brand of cheese sticks are as follows: benzoic acid, corn meal, cheese, monosodium glutamate (MSG), sunset yellow (E 110), vegetable oil Which of the above ingredients are food additives? Suggest one function for each of the food additives. (6 marks)

Food additives and drugs : 1996 5.

The following statement is found on a pack of cigarettes: 'cigarette smoking is hazadous to health' Explain the above statement by making reference to the effects on health of the different substances present in cigarette smoke. (9 marks)

Food additives and drugs : 1997 2. (a) Aspirin is a pain killer, but it may cause damage to the stomach lining of the user. (i) What is the active ingredient in aspirin? (ii) Some people who suffered from stomach disturbances take an anti-acid whenever they take aspirin. Name one chemical which is used as an active ingredient in antiacids. 2. (b) Codeine is one of the drugs abused by some teenagers in Hong Kong. (i) State one medicinal use of codeine. (ii) State one adverse effect of taking codeine. (iii) State one measure taken by Hong Kong Government to prevent teenagers from abusing codeine. (5 marks)

Food additives and drugs : 1998 3. Consider the following substances: Sodium benzoate, sodij chloride, sodium pypochlorite, Sodium hydrogencarbonate,

Food additives and drugs

Page 2

sodium hydroxide, Sodium sulphite and monsodium glutamate (a) Which substance is commonly used for preserving fish? Briefly explain its action. (2 marks) Food additives and drugs : 1999 7. (b) (iv) Explain why vinegar can be used as a food preservative. (1 marks)

Food additives and drugs : 2000 5. Describe the actions of food preservatives. Illustrate your answer with appropriate examples. (9 marks)