Zig-zag motion (eratic motion) of particles in colloid was observed by

1.	Zig-zag motion (eratic motion) of particles in colloid was observed by [CPMT 1985]
A.	Tyndall
B.	Zsigmondy
C.	Robert brown
D.	Thomas Graham
Answer» D. Thomas Graham

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Zig-zag motion (eratic motion) of particles in colloid was observed by [CPMT 1985]

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