True or False : `Al(NO_3)_3` has higher coagulating power than `MgSO_4` for `Fe(OH)_3` sol.

The best coagulant for the precipitation of Fe(OH)_3 sol is

which of the following will have the highest coagulating power for Fe(OH)_(3) colloid ?

each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: For coagulation of positively charged sols, [Fe(CN)_(6)]^(4-) ion has higher coagulating power than that of PO_(4)^(3-),SO_(4)^(2-),Cl^(-) STATEMENT-2: The size of colloidal particle are larger than the size of true solution particles.

True of False : CoCl_3 .3NH_3 complex is non-conducting.

True of False: NH_3 is less basic than PH_3 .

Bond angle in (PH_4)^+ is higher than that in PH_3 . Why?

True of False : Both La^(3+) and Lu^(3+) are diamagnetic.