Question

Which of the following milk constituents scatter/reflect light for milk to appear whitish?
(A) Fat
(B) Lactose
(C) Casein
(D) Whey proteins
Choose the correct answer from the options given below:

• (A) and (B)
• (A) and (C)
• (B) and (D)
• (C) and (D)

Hint:

Light scattering requires particles of sufficient size.
Fat globules (emulsion) and casein micelles (colloid) are the only particles in milk large enough to scatter light, which is why skimmed milk (lacking fat) looks less white and more bluish-translucent.

Answer 1

The Correct Option is B