LSE 5

• What is the title of LSE 5?

  Fehling's Test: Which food samples contain reducing sugars?
• It detects presence of reducing sugar using copper based reagent.

  Fehling's test
• True or False: Equal volume of Fehling A and B are mixed to make Fehling’s reagent.

  True
• Positive result shows a color of _ precipitate of cuprous oxide.

  brick-red
• How many mL of Fehling's A and B are added in the 8 test tubes?

  1
• How many drops of each samples are added to the test tubes?

  2 to 3
• How long are the test tubes heated in the water bath?

  2 mins
• A positive result shows a precipitate of color _.

  red
• A negative result shows a precipitate of color _.

  blue
• The samples that showed positive results are

  Glucose

  Milk

  Grape juice
• The samples that showed negative results are

  Water

  Groundnut oil

  Egg white

  Sucrose