Assertion (A) : When freshly precipitated nickel sulphide (NiS) is shaken with a solution of hydrogen sulphide, a colloidal sol. is obtained . Reason (R): The cause of peptization is the development of positive or negative charge on the precipitates by selective adsorption of ions from electrolytes.

Assertion (A) : When freshly precipitated nickel sulphide (NiS) is sha

1.	Assertion (A) : When freshly precipitated nickel sulphide (NiS) is shaken with a solution of hydrogen sulphide, a colloidal sol. is obtained . Reason (R): The cause of peptization is the development of positive or negative charge on the precipitates by selective adsorption of ions from electrolytes.
Answer» Both A and R are TRUE and R is the correct explanation of A Both A and R are true but R is not a correct explanation of A A is true but R is FALSE A is false but R is true Answer :A