Question

How will you test the presence of fat in a food item?

Answer 1

Materials
6 foods and Writing Paper (apple, butter, olives, potato chips, carrot, banana)
Method
1. Smear a small amount of the food on a piece of paper. 2. Wipe off the food so there is no residue. 3. Let the paper dry for about 30 min. then make your observations.
Observations
Complete the chart below using the foods your group has selected. If the substance turns the paper translucent (or slightly see-through), it contains fat. If it dries to the original color of the paper (and opaque), it does not contain fat. 

Answer 2

$\huge\bold{\underline{\underline{{Aim\: of\: the\: experiment:-}}}}$ To prove the presence of Fats in food.

$\huge\bold{\underline{\underline{{Materials\: required:-}}}}$ brown paper, source of light & food

$\huge\bold{\underline{\underline{{Procedure:-}}}}$ A small quantity of food is rubbed in the centre of Brown paper. The paper is held in front of the source of light .

$\huge\bold{\underline{\underline{{Diagram:-}}}}$In the attachment

$\huge\bold{\underline{\underline{{Observation:-}}}}$ The food has left a bright-greasy patch on paper .

$\huge\bold{\underline{\underline{{Inference:-}}}}$ The food contains fat as it is translucent.