FOOD TEST

What is the purpose of the Benedict test?

• To determine the concentration of protein in a solution

• To detect the presence of reducing sugars in a solution

• To identify the presence of starch in a solution

• To measure the acidity of a solution

What are the main components of the Benedict test apparatus?

• Flasks, Benedict's solution, hot plate, and a source of electricity

• Test tubes, Benedict's solution, water bath, and a source of heat

• Test tubes, Benedict's powder, water bath, and a source of light

• Beakers, Benedict's solution, ice bath, and a source of cold

What is the procedure for conducting the Benedict test?

• Mix the sample with iodine and observe the color change

• Mix the sample with Benedict's reagent and heat in a boiling water bath. A color change to brick red indicates the presence of reducing sugars.

• Add the sample to a test tube and shake vigorously

• Heat the sample with hydrochloric acid

What is the significance of the color change in the Benedict test?

• The color change indicates the presence of reducing sugars.

• The color change indicates the presence of vitamin C

• The color change indicates the presence of starch

• The color change indicates the presence of protein

What type of substances can be tested using the Benedict test?

• Lipids

• Non-reducing sugars

• Proteins

• Reducing sugars

How is the concentration of reducing sugars determined in the Benedict test?

• By observing the color change in the Benedict test

• By conducting a titration in the Benedict test

• By using a spectrophotometer in the Benedict test

• By measuring the pH in the Benedict test

What are the safety precautions to be taken while conducting the Benedict test?

• Not wearing any protective gear

• Wearing sandals and shorts while working in the lab

• Wearing gloves, goggles, and lab coat, working in a well-ventilated area, and handling chemicals carefully.

• Working with chemicals in a closed room with poor ventilation

I am used to test for the presence of complex carbohydrates (starch)

• Benedict's Test

• Biuret Test

• Iodine Test

• Ethanol Emulsion Test

I am used to test for the presence of simple carbohydrates (sugars)

• Benedict's Test

• Biuret Test

• Iodine Test

• Ethanol Emulsion Test

When reducing sugar (glucose) is present Benedict's turns...

• purple

• blue-black

• brick-red

• green