The colloidal solution of gelatin is known as:

On the basis of the Hardy-Schulze rule,explain why the coagulating power of phosphate is higher than chloride.

Coagulating value of electrolytes $AlCl_3$ and $NaCl$ for $As_2S_3$ are $0.09$ and $50.04$ respectively. The coagulating power of $AlCl_3$ is $x$ times the coagulating power of $NaCl$. The value of $x$ is $.......$.

Which of the following colloids cannot be easily coagulated?

Which of the following is the best protective colloid?

Explain the cleansing action of soaps.