1) Which of the following is an example of an alkali used in cooking? a) Lemon juice b) Bicarbonate of soda c) Vinegar d) Sodium hydroxide 2) Which of the following can be used to slow down the oxidation of fruit? a) Vinegar b) Bicarbonate of soda c) Lemon juice d) Cornflour 3) Which of the folloing would help to speed up the souring of milk? a) Bicarbonate of soda b) Lemon juice c) Cornflour d) Soap 4) Which of these pH's is an alkaline substance? a) 1 b) 7 c) 5 d) 11 5) Whcih of these is a function of vinegar? a) To preserve food b) To thicken sauces c) To help cakes to rise d) To stop fruit browning 6) Which of the following is the pH of milk? a) 6.8 b) 2.3 c) 2.4 d) 9.0 7) Which of the following helps cakes to rise? a) Vinegar b) Lemon juice c) Bicarbonate of soda d) Water 8) What does baking soda destroy in vegetables? a) Vitamin E b) Vitamin C c) Vitamin D d) Vitamin B 9) Which of the following can be used to cook some foods? a) Alkalis b) Acids c) Neutrals d) Sodium bicarbonate 10) What should be added to egg whites to help them to coagulate (stiffen) faster? a) Vinegar b) Cornflour c) Sodium bicarbonate d) Vinegar and cornflour

Wordwall acids and alkalis

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