|I:||In the coagulation of a negative sol, the flocculating power of the three given ions is in the order Al3+ > Ba2+ > Na+|
|II:||In the coagulation of a positive sol, the flocculating power of the three given salts is in the order NaCl > Na2SO4 > Na3PO4|
|1.||I is incorrect but II is correct.|
|2.||Both I and II are correct.|
|3.||Both I and II are incorrect.|
|4.||I is correct but II is incorrect.|
The graph between vs log p is given below:
What is the value of the slope?
Consider the following graph between (extent of adsorption) and pressure:
What is the correct relation between T1, T2, and T3?
Match the items given in Column I and Column II.
|Column I||Column II|
|A. Protective colloid||1. FeCl3 + NaOH|
|B. Liquid-liquid colloid||2. Lyophilic colloids|
|C. Positively charged colloid||3. Emulsion|
|D. Negatively charged colloid||4. FeCl3 + hot water|
Match the statement given in Column I with the phenomenon given in Column II.
|A. Dispersion medium moves in an electric field||1. Osmosis|
|B. Solvent molecules pass through a semi-permeable membrane towards the solvent side||2. Electrophoresis|
|C. Movement of charged colloidal particles under the influence of applied electric potential towards oppositely charged electrodes||3. Electroosmosis|
|D. Solvent molecules pass through semi-permeable membranes towards the solution side||
4. Reverse osmosis
Match the items of Column I and Column II.
A. Whipped cream
B. Pumice stone
1. Dispersion of liquid in liquid
2. Dispersion of solid in liquid
3. Dispersion of gas in solid
4. Dispersion of gas in liquid
A B C D
1. 2 3 4 1
2. 1 2 3 5
3. 5 4 3 2
4. 4 3 1 2
Match the items in Column I and Column II.
|Column I||Column II|
|A. Dialysis||1. Cleansing action of soap|
|B. Peptization||2. Coagulation|
|C. Emulsification||3. Colloidal sol formation|
|D. Electrophoresis||4. Purification|
Select the correct option based on statements below:
|Assertion (A):||Detergents with low CMC are more economical to use.|
|Reason (R):||The cleansing action of detergents involves the formation of micelles. These are formed when the concentration of detergents becomes equal to CMC.|
|1.||Both (A) and (R) are true and (R) is the correct explanation of (A).|
|2.||Both (A) and (R) are true but (R) is not the correct explanation of (A).|
|3.||(A) is true but (R) is false.|
|4.||(A) is false but (R) is true.|