Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The sol prepared by Bredig's Arc method is 
and the charge of sol particles of it is 
. 
and 
are respectively.
A
Metal sol, -ve
B
Metal sol, +ve
C
Metal sulphide sol,-ve
D
sol, +ve
Text Solution
Verified by ExpertsThe correct answer is:
A
Bredig's Arc (Electrical disintegration) method is used to prepare colloidal sals of metals such as gold, silver, platinum etc... In this method, electric arc is struck between electrodes of the metal immersed in the dispersion medium. The intense heat produced vapourises the metal, which then condenses to form particles of the colloidal size. Metal sols acquire negative charge.
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