Assertion : Coagulation power of $A{l}^{3+}$ is more than $N{a}^{+}$ .
Reason : greater the valency of the flocculating ion added, greater is its power to cause precipitationSolution in Tamil

Name the method used for the refining of (i) Nickel (ii) Zirconium

Explain the principle of electrolytic refining with an example.

(i) Explain the role of carbon monoxide in the purification of nickel?
(ii) Describe the structure of diborane.

(a) (i) What is Cementation?
(ii) Write a notes on ionisation enthalpy in p-block elements?

Statement- 1: In the coagulation of negatively charged arsenic sulphide sol, the coagulating power decreases in the order $A{l}^{3+}>B{a}^{2+}>N{a}^{+}$.
Statement- 2: Generally greater the valency of coagulating ion, the greater is its power of coagulation.

Greater the valency, the higher is the coagulating power of ion.'This rule was inroduced by

Statement-1: In the coagulation of negatively charged arsenic sulphide sol, the coagulating power decreases in the order, $A{l}^3>B{a}^{2+}>N{a}^{+}$
Statement-2 : Generally greater the valence of coagulating ion, the greater is its power of coagulation.

Assertion : In the coagulation of a negative sol the flocculating power is in the order :
$A{l}^{3+}>B{a}^{2+}>N{a}^{+}$
Reason : Greater the valence of the flocculating ion added, greater is its power to cause precipitation.

In the coagulation of negative sol, arrange the following ions in the ascending order of their flocculating power Ba^(2+), Na^(+), Al^(3+) .

Assertion (A): Coagulation power of $A{l}^{3+}$ is more than that of $N{a}^{+}$.
Reason (R): Greater the valency of the flocculating ion added, greater is its power to cause precipitation (Hardy Schulze rule).

Greater the valency, the higher is the coagulating power of ion. This rule was introduced by

Greater the flocculation value of an electrolyte, greater is its coagulating power.

Give the decreasing order of flocculating power of the following ions in the coagulation of a negative sol. $N{a}^{+},B{a}^{2+},A{l}^{3+}$

Assertion (A) Coagulation power of Al^(3+) is more than Na^(+) . Reason (R) Greater the valency of the flocculating ion added, greater is its power to cause precipitation (Hardy-Schulze rule) . (a)Assertion and reason both are correct and the reason is correct explanation of assertion. (b)Assertion and reason both are correct but reason does not explain assertion. (c)Assertion is correct, but reason is incorrect. (d)Assertion is incorrect, but reason is correct.

Assertion : In the coagulation of a negative sol the flocculating power is in the order : Al^(3+) gt Ba^(2+) gt Na^(+) Reason : Greater the valence of the flocculating ion added, greater is its power to cause precipitation.

अभिकथन - $A{I}^{3+}$ की स्कंदन शक्ति $N{a}^{+}$ की तुलना में अधिक होती है।
तर्क- ऊर्णी कर्मक आयन की संयोजकता जितनी अधिक होती है इसकी अवक्षेपण क्षमता उतनी ही अधिक होती है (हार्डी - शुल्से नियम)।