Food Tests Quiz

Which reagent is used to test for the presence of proteins in a food sample?

• Iodine solution

• Biuret solution

• Benedict's solution

• Hydrochloric acid

Positive result for the simple fat test

• Transparent marks

• Translucent marks

• Cloudy white precipitate

• Ethanol

Is used to test for the presence of starch

• Biuret solution

• Ethanol

• DCPIP

• Iodine solution

Is also used instead of the Benedict’s solution

• Fehling's solution

• Sodium Hydroxide

• Hydrochloric acid

• Dilute copper sulphate

Is the solution used in the complex test for the presence of fats.

• Transparent marks

• Translucent marks

• Cloudy white precipitate

• Ethanol

Is the reagent used to test for the presence of reducing sugars

• Iodine solution

• Biuret solution

• Benedict's solution

• Hydrochloric acid

Is the reagent used to test the presence of proteins

• Iodine solution

• Biuret solution

• Benedict's solution

• Hydrochloric acid

is added to foods containing proteins until the solution clears

• Hydrochloric acid

• Sodium hydroxide

• Potassium hydroxide

• Potassium permanganate

Is the solution that is added last to test for protein in food

• Dilute copper sulphate

• Sodium hydroxide

• Potassium hydroxide

• Potassium permanganate

Is the solution added to a non-reducing food sample

• Hydrochloric acid

• Sodium hydroxide

• Potassium hydroxide

• Potassium permanganate