Sodium stearate forms in water:

At the critical micelle concentration,the surfactant molecules

Which of the following statements is/are not true?

When an excess of $AgNO_3$ solution is added to a $KI$ solution,a sol is formed. The colloidal particles will carry which type of charge?

Gold number is associated with

The flocculation value of $HCl$ for arsenic sulphide sol is $30 \; mmol \; L^{-1}$. If $H_{2}SO_{4}$ is used for the flocculation of arsenic sulphide,the amount,in grams,of $H_{2}SO_{4}$ in $250 \; mL$ required for the above purpose is (molecular mass of $H_{2}SO_{4} = 98 \; g/mol$)