Which one of the following methods is commonly used method for destruction of colloid:

1. Dialysis

2. Condensation

3. Filtration by animal membrane

4. By adding electrolyte

Subtopic:  Colloidal Solution |
 69%
From NCERT
AIPMT - 2000
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Positions of the non-polar & polar parts in Micelle are:

1. Polar at the outer surface but non-polar at the inner surface
2. Polar at the inner surface but non-polar at the outer surface
3. Distributed all over the surface
4. Present on the surface only
Subtopic:  Colloidal Solution |
 79%
From NCERT
AIPMT - 2002
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Which of the following is correct:
1. Cycloheptane is an aromatic compound
2. Diastase is an enzyme
3. Acetophenone is an ether
4. All the above

Subtopic:  Catalyst |
 55%
From NCERT
AIPMT - 2001
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Which statement is not correct regarding the adsorption of a gas on the surface of a solid:

1. On increasing temperature adsorption increase continuously
2. Enthalpy & entropy change is negative
3. Adsorption is more for some specific substance
4. Reversible

Subtopic:  Adsorption and Absorption |
 75%
From NCERT
AIPMT - 2001
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According to the adsorption theory of catalysis, the speed of the reaction increase because:

1. The concentration of reactant molecules at the active centers of the catalyst becomes high due to adsorption
2. In the process of adsorption, the activation energy of the molecules becomes large
3. Adsorption produces heat which increases the speed of the reaction
4. Adsorption lowers the activation energy of the reaction
Subtopic:  Adsorption and Absorption |
From NCERT
AIPMT - 2003
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According to Hardy Schulze law, the order of coagulation power of cations will be:

1. Na+ > Ba+2  > Al+3

2.  Al+3 > Ba+2  > Na+

3.  Ba+2 > Al+3  > Na+

4.  Al+3  > Na+> Ba+2 

Subtopic:  Colloidal Solution |
 89%
From NCERT
AIPMT - 1999
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At the critical micelle concentration (CMC) the surfactant molecules:
1. Associate
2. Dissociate
3. Decompose
4. Become completely soluble

Subtopic:  Colloidal Solution |
 78%
From NCERT
AIPMT - 1998
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Which one of the following forms micelles in the aqueous solution above a certain concentration:

1. Glucose

2. Urea

3. Dodecyl trimethyl ammonium chloride

4. Pyridinium chloride

Subtopic:  Colloidal Solution |
 80%
From NCERT
AIPMT - 2005
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