Which of the following is used to cure arsenic poisoning?

Colloidal solution of zinc hydroxide Colloidal solution of ferric hydroxide Colloidal solution of chromium hydroxide Colloidal solution of calcium hydroxide

Colloidal solution of ferric hydroxide

A person with arsenic poisoning is given a colloidal solution of ferric hydroxide (Fe(OH)3). Since arsenic hydroxide adsorbs it, it might be expelled later by vomiting.