1) What is the indicator for sugar called? a) Iodine b) Biurets c) Sudan III d) Benedict 2) Benedict's show a positive result when it turns a) green b) Purple c) Red d) Clear 3) Iodine is an indicator for what? a) Starch b) Sugar c) Carbohydrates d) Proteine 4) 'Lipid' is the scientific word for what a) Carbohydrates b) Fats c) Proteins d) Sugars 5) If starch is present then iodine turns what colour? a) Blue Black b) Brick red c) Lime green d) Yellow Brown 6) Benedict's solution will not change colour unless... a) The solution is heated in a hot water bath b) The solution is shaken c) The solution is stirred d) The solution is to be put in ice 7) Lipids use what to be tested a) Iodene b) Biuret's c) Ethanol d) sudan III 8) Ethanol and water give a positive result for lipids by... a) forming a cloudy white solution b) by turning blue c) By turning a Blue black colour d) By staying clear 9) Biuret solution tests.... a) sugars b) carbohydrates c) lipids d) Protein 10) If protein is NOT present in a food then the biuret solution will stay... a) Green b) Blue c) Yellow d) clear

Food type tests

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