In which of the sols, the colloidal particles are with a negative charge?

1. TiO2

2. Hemoglobin

3. Starch

4. Hydrated Al2O3

Subtopic:  Colloidal Solution |
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Which one of the following forms micelles in aqueous solution above certain concentration -

1. Glucose

2. Urea

3. Dodecyl trimethyl ammonium chloride

4. Pyridinium chloride

Subtopic:  Colloidal Solution |
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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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology

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

1. Dialysis

2. Condensation

3. Filteration by animal membrane

4. By adding electrolyte

Subtopic:  Colloidal Solution |
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Position of the nonpolar & polar part in Micelle is:

1. Polar at the outer surface but non-polar at the inner surface
2. Polar at inner surface but non-polar at the outer surface
3. Distributed all over the surface
4. Present on the surface only
Subtopic:  Colloidal Solution |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology

Which of the following is correct : -
1. Cyclo heptane is an aromatic compound
2. Diastase is an enzyme
3. Acetophenone is an ether
4. All the above

Subtopic:  Catalyst |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology

Which is not correct regarding the adsorption of a gas on the surface of 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 |
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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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology

The right option for the statement "Tyndall effect is exhibited by", is:

1. Starch solution 

2. Urea solution

3. NaCl solution

4. Glucose solution

Subtopic:  Colloidal Solution |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology