TS EAMCET Medical 8 May 2024 Shift 1 Paper

Question : 145 of 160

Marks: +1, -0

A few sols are given below
As2S3 sol; starch sol; Al2O3xH2O sol; TiO2 sol; gold sol; congo red sol; blood; methylene blue sol; CdS sol
The number of positively charged sols in the above list is