320772
The dispersed phase, dispersion medium and nature of colloidal solution (lyophilic or lyophobic) of 'gold sol' respectively, are
1 solid, solid, lyophobic
2 liquid, liquid, lyophobic
3 solid, liquid, lyophobic
4 solid, liquid, lyophilic
Explanation:
Colloidal solution of gold is obtained when dispersed phase is solid and dispersion medium is liquid. Substances like metals (e.g. gold, silver) cannot be brought into the colloidal state simply by bringing them in contact with water or solvent and therefore, special methods are used for the purpose. Hence, they are known as hydrophobic or lyophobic colloids.
CHXII05:SURFACE CHEMISTRY
320773
How many of the following are lyophilic sols? Sol of starch in water, sol of cellulose nitrate in acetone, gold sol, ferric hydroxide sol, gelatin sol, \({\mathrm{\mathrm{As}_{2} \mathrm{~S}_{3}}}\) sol, sol of rubber in benzene
1 2
2 1
3 5
4 4
Explanation:
Sol of starch in water, sol of cellulose nitrate in acetone, gelatin sol, sol of rubber in benzene are examples of lyophilic sols.
CHXII05:SURFACE CHEMISTRY
320774
Which one of the following statements is not correct in respect of lyophilic sols?
1 There is a considerable interaction between the dispersed phase and dispersion medium
2 These are quite stable and are not easily coagulated
3 They need stabilising agent
4 The particles are hydrated
Explanation:
Conceptual Questions
CHXII05:SURFACE CHEMISTRY
320775
Which one of the following is not a property of Hydro sols?
1 High concentration of dispersed phase can be easily attained.
2 Coagulation is reversible.
3 Viscosity and surface tension are about the same as for water.
4 The charge of particle depends upon the \(\mathrm{pH}\) values of the medium, it may be positive, negative or even zero.
Explanation:
Viscosity and surface tension differ significantly.
320772
The dispersed phase, dispersion medium and nature of colloidal solution (lyophilic or lyophobic) of 'gold sol' respectively, are
1 solid, solid, lyophobic
2 liquid, liquid, lyophobic
3 solid, liquid, lyophobic
4 solid, liquid, lyophilic
Explanation:
Colloidal solution of gold is obtained when dispersed phase is solid and dispersion medium is liquid. Substances like metals (e.g. gold, silver) cannot be brought into the colloidal state simply by bringing them in contact with water or solvent and therefore, special methods are used for the purpose. Hence, they are known as hydrophobic or lyophobic colloids.
CHXII05:SURFACE CHEMISTRY
320773
How many of the following are lyophilic sols? Sol of starch in water, sol of cellulose nitrate in acetone, gold sol, ferric hydroxide sol, gelatin sol, \({\mathrm{\mathrm{As}_{2} \mathrm{~S}_{3}}}\) sol, sol of rubber in benzene
1 2
2 1
3 5
4 4
Explanation:
Sol of starch in water, sol of cellulose nitrate in acetone, gelatin sol, sol of rubber in benzene are examples of lyophilic sols.
CHXII05:SURFACE CHEMISTRY
320774
Which one of the following statements is not correct in respect of lyophilic sols?
1 There is a considerable interaction between the dispersed phase and dispersion medium
2 These are quite stable and are not easily coagulated
3 They need stabilising agent
4 The particles are hydrated
Explanation:
Conceptual Questions
CHXII05:SURFACE CHEMISTRY
320775
Which one of the following is not a property of Hydro sols?
1 High concentration of dispersed phase can be easily attained.
2 Coagulation is reversible.
3 Viscosity and surface tension are about the same as for water.
4 The charge of particle depends upon the \(\mathrm{pH}\) values of the medium, it may be positive, negative or even zero.
Explanation:
Viscosity and surface tension differ significantly.
320772
The dispersed phase, dispersion medium and nature of colloidal solution (lyophilic or lyophobic) of 'gold sol' respectively, are
1 solid, solid, lyophobic
2 liquid, liquid, lyophobic
3 solid, liquid, lyophobic
4 solid, liquid, lyophilic
Explanation:
Colloidal solution of gold is obtained when dispersed phase is solid and dispersion medium is liquid. Substances like metals (e.g. gold, silver) cannot be brought into the colloidal state simply by bringing them in contact with water or solvent and therefore, special methods are used for the purpose. Hence, they are known as hydrophobic or lyophobic colloids.
CHXII05:SURFACE CHEMISTRY
320773
How many of the following are lyophilic sols? Sol of starch in water, sol of cellulose nitrate in acetone, gold sol, ferric hydroxide sol, gelatin sol, \({\mathrm{\mathrm{As}_{2} \mathrm{~S}_{3}}}\) sol, sol of rubber in benzene
1 2
2 1
3 5
4 4
Explanation:
Sol of starch in water, sol of cellulose nitrate in acetone, gelatin sol, sol of rubber in benzene are examples of lyophilic sols.
CHXII05:SURFACE CHEMISTRY
320774
Which one of the following statements is not correct in respect of lyophilic sols?
1 There is a considerable interaction between the dispersed phase and dispersion medium
2 These are quite stable and are not easily coagulated
3 They need stabilising agent
4 The particles are hydrated
Explanation:
Conceptual Questions
CHXII05:SURFACE CHEMISTRY
320775
Which one of the following is not a property of Hydro sols?
1 High concentration of dispersed phase can be easily attained.
2 Coagulation is reversible.
3 Viscosity and surface tension are about the same as for water.
4 The charge of particle depends upon the \(\mathrm{pH}\) values of the medium, it may be positive, negative or even zero.
Explanation:
Viscosity and surface tension differ significantly.
320772
The dispersed phase, dispersion medium and nature of colloidal solution (lyophilic or lyophobic) of 'gold sol' respectively, are
1 solid, solid, lyophobic
2 liquid, liquid, lyophobic
3 solid, liquid, lyophobic
4 solid, liquid, lyophilic
Explanation:
Colloidal solution of gold is obtained when dispersed phase is solid and dispersion medium is liquid. Substances like metals (e.g. gold, silver) cannot be brought into the colloidal state simply by bringing them in contact with water or solvent and therefore, special methods are used for the purpose. Hence, they are known as hydrophobic or lyophobic colloids.
CHXII05:SURFACE CHEMISTRY
320773
How many of the following are lyophilic sols? Sol of starch in water, sol of cellulose nitrate in acetone, gold sol, ferric hydroxide sol, gelatin sol, \({\mathrm{\mathrm{As}_{2} \mathrm{~S}_{3}}}\) sol, sol of rubber in benzene
1 2
2 1
3 5
4 4
Explanation:
Sol of starch in water, sol of cellulose nitrate in acetone, gelatin sol, sol of rubber in benzene are examples of lyophilic sols.
CHXII05:SURFACE CHEMISTRY
320774
Which one of the following statements is not correct in respect of lyophilic sols?
1 There is a considerable interaction between the dispersed phase and dispersion medium
2 These are quite stable and are not easily coagulated
3 They need stabilising agent
4 The particles are hydrated
Explanation:
Conceptual Questions
CHXII05:SURFACE CHEMISTRY
320775
Which one of the following is not a property of Hydro sols?
1 High concentration of dispersed phase can be easily attained.
2 Coagulation is reversible.
3 Viscosity and surface tension are about the same as for water.
4 The charge of particle depends upon the \(\mathrm{pH}\) values of the medium, it may be positive, negative or even zero.
Explanation:
Viscosity and surface tension differ significantly.
320772
The dispersed phase, dispersion medium and nature of colloidal solution (lyophilic or lyophobic) of 'gold sol' respectively, are
1 solid, solid, lyophobic
2 liquid, liquid, lyophobic
3 solid, liquid, lyophobic
4 solid, liquid, lyophilic
Explanation:
Colloidal solution of gold is obtained when dispersed phase is solid and dispersion medium is liquid. Substances like metals (e.g. gold, silver) cannot be brought into the colloidal state simply by bringing them in contact with water or solvent and therefore, special methods are used for the purpose. Hence, they are known as hydrophobic or lyophobic colloids.
CHXII05:SURFACE CHEMISTRY
320773
How many of the following are lyophilic sols? Sol of starch in water, sol of cellulose nitrate in acetone, gold sol, ferric hydroxide sol, gelatin sol, \({\mathrm{\mathrm{As}_{2} \mathrm{~S}_{3}}}\) sol, sol of rubber in benzene
1 2
2 1
3 5
4 4
Explanation:
Sol of starch in water, sol of cellulose nitrate in acetone, gelatin sol, sol of rubber in benzene are examples of lyophilic sols.
CHXII05:SURFACE CHEMISTRY
320774
Which one of the following statements is not correct in respect of lyophilic sols?
1 There is a considerable interaction between the dispersed phase and dispersion medium
2 These are quite stable and are not easily coagulated
3 They need stabilising agent
4 The particles are hydrated
Explanation:
Conceptual Questions
CHXII05:SURFACE CHEMISTRY
320775
Which one of the following is not a property of Hydro sols?
1 High concentration of dispersed phase can be easily attained.
2 Coagulation is reversible.
3 Viscosity and surface tension are about the same as for water.
4 The charge of particle depends upon the \(\mathrm{pH}\) values of the medium, it may be positive, negative or even zero.
Explanation:
Viscosity and surface tension differ significantly.
