The continuous zig-zag movement of colloidal particles in a dispersion medium is calleda)Dispersionb)Tyndall effectc)Brownian movementd)OscillationCorrect answer is option 'C'. Can you explain this answer?

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The continuous zig-zag movement of colloidal particles in a dispersion medium is called

a)
Dispersion
b)
Tyndall effect
c)
Brownian movement
d)
Oscillation

Correct answer is option 'C'. Can you explain this answer?

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The continuous zig-zag movement of colloidal particles in a dispersion...

Brownian movement:

Sometimes, when the beam of sunlight enters a room, we can see tiny dust particles suspended in the air which is moving rapidly.
The tiny dust particles move here and there because they are constantly hit by the fast-moving particles of air.
The zig-zag movement of the small particles suspended in a liquid (or gas) is called Brownian motion.

The existence of Brownian motion gives us two conclusions about the nature of matter :
- That matter is made up of tiny particles, and
- That the particles of matter are constantly moving.
The best evidence for the existence and movement of particles in liquids was given by Robert Brown in 1827.

Hence, the continuous zig-zag movement of colloidal particles in a dispersion medium is called Brownian Motion.

So, the correct option is the Brownian movement.

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