Match List I with List II

Choose the correct answer from the options given below:

A-III, B-IV, C-I, D-II

The correct answer is (1) A-III, B-IV, C-I, D-II

Haemoglobin is a protein that carries oxygen in the blood. It is a negatively charged sol because it contains acidic groups such as carboxyl \((-COOH)\) and phosphate groups \((-PO_4^{2-})\).

Acid dye stuff are dyes that dissolve in acidic solutions. They are positively charged sols because they contain acidic groups such as sulphonic \((-SO_3H)\) and carboxylic \((-COOH)\) groups.

Gold solution is a colloidal solution of gold particles. It is a negatively charged sol because the gold particles are coated with citrate ions \((C_6H_5O_7^{3-}).

Basic dye stuff are dyes that dissolve in basic solutions. They are positively charged sols because they contain basic groups such as amino \((-NH_2)\) and imino \((-NH-)\) groups.

Examples of acid dye stuff: Eosin, Orange II, Methyl Orange

Examples of basic dye stuff: Methylene blue, Crystal Violet, Safranin