wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The colour of milk is white because

A
Both the dispersed phase and the dispersion medium are colourless but the dispersed fat globules scatter all wavelengths equally
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Both the dispersed phase and the dispersion medium are white and the dispersed fat globules scatter all wavelengths equally
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
The dispersed phase and the dispersion medium are made up of complement colours
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
None of the above
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A Both the dispersed phase and the dispersion medium are colourless but the dispersed fat globules scatter all wavelengths equally
Colloidal dispersions can be easily distinguished from true solutions by their light-scattering properties. The nature of this scattering largely depends on the ratio of the size of the dispersed phase to the wavelength of the light. The particles in the colloid tend to scatter all wavelengths equally and this phenomenon is called Tyndall Scattering.
In fact, the white colour of fog and milk are chiefly attributed to Tyndall scattering. The butterfat droplets in milk are actually transparent, but the scattering disperses the light in all directions so extensively that we cannot see through milk.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Properties of Colloids
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon