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In the coagulation of a negative sol, the flocculating power is in the order

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Important Questions on Adsorption and Colloids

EASY

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

The correct decreasing order of coagulation power for

{As}_{2} S_{3}

sols is

MEDIUM

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

Which of the following electrolytes will have maximum coagulating value for

AgI / {Ag}^{+}

sol?

HARD

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

State Hardy - Schulze rule.

MEDIUM

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

The coagulating power of electrolytes having ions

{Na}^{+}

{Al}^{3 +}

and

{Ba}^{2 +}

for arsenic sulphide sol increases in the order,

MEDIUM

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order:

EASY

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

Among the electrolytes

{Na}_{2} {SO}_{4}, {CaCl}_{2}, {Al}_{2} {({SO}_{4})}_{3}

and

{NH}_{4} Cl

the most effective coagulating agent for

{Sb}_{2} S_{3}

sol is

EASY

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

For the coagulation of a negative sol, the species below, that has the highest flocculating power is:

EASY

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

The most effective coagulating agent among the options for

{Sb}_{2} S_{3}

sol is

MEDIUM

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

In the coagulation of a positive sol, the flocculating power of the ions

{PO}_{4}^{3 -}, {SO}_{4}^{2 -}

and

{Cl}^{-}

decreases in the order

EASY

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

Among the following, the ion which will be more effective for flocculation of

Fe (OH)_{3}

solution is

MEDIUM

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

For coagulation of 50 mL of a sol, 10 mL of 0.5M Cl^-ion solution is required. What is the coagulating value of ${Cl}^{-}$ ion solution (Nearest integer)

EASY

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

For coagulation of arsenious sulphide sol, which of the following salt solutions will be most effective?

EASY

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

Which of the following is the CORRECT increasing order of coagulating power of electrolytes required to precipitate a negatively charged

{As}_{2} S_{3}

colloid ?

EASY

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

Which of the following electrolytes requires maximum concentration to cause coagulation of

{As}_{2} S_{3}

sol?

EASY

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

A colloidal solution is subjected to an electric field than colloidal particles more towards anode. The amount of electrolytes of

{BaCl}_{2}, {AlCl}_{3}

and

NaCl

required to coagulate the given colloid is in the order

EASY

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

Hardening of leather in tanning industry is based on

MEDIUM

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

The trend in the colligative properties for the same concentration of

{BaCl}_{2}, {MgCl}_{2}

and

NaCl,

respectively, is

MEDIUM

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

Which of the following has the highest coagulating power for

{As}_{2} S_{3}

colloid?

MEDIUM

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

The correct option among the following is.

EASY

Chemistry>Physical Chemistry>Adsorption and Colloids>Colloids

The coagulation values in millimoles per litre of the electrolytes used for the coagulation of

A s_{2} S_{3}

are given below,

I .

(N a C l) = 52

II .

(B a C l_{2}) = 0.69

III .

(M g S O_{4}) = 0.22

The correct order of their coagulating power is

In the coagulation of a negative sol, the flocculating power is in the order

Important Questions on Adsorption and Colloids

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