Suggests method for the quantitative estimation of ozone `(O_3)`.

Carius method is not used for estimation of

Suggest one method for the removal of hardness.

Suggest a method to measure the diameter of the Moon.

Dumas method is used for the estimation of (1)Carbon (2)Nitrogen (3)Sulphur (4)Halogens

Colloids are an intermediate between suspension and solutions. Suggest suitable method for the preparation of the following sol:Gold sol

Colloids are an intermediate between suspension and solutions. Suggest suitable method for the preparation of the following sol:Ferric hydroxide sol

With decreases in concentration of an electrolytic solution , Conductivity (K) decreases and molar conductivity (^^_m) increases. Limiting molar conductivity (^^_m^@) of a strong electrolyte can be determined by graphical extrapolation method, Suggest a method for the determination of limiting molar conductivity of a weak electrolyte, taking acetic acid (CH_3COOH) as example .

Suggest methods for concentration of the following ores?1. ZnS 2. Fe_2 O_3 3. Cu_2 S