Properties of Colloids
CHXII05:SURFACE CHEMISTRY

320862 Isoelectric point refers to the H+ion concentration at which the colloidal particles:

1 Coagulate
2 Become electrically neutral
3 Can move to either electrode when subjected to an electric field
4 Reverse their electrical charge
CHXII05:SURFACE CHEMISTRY

320863 A sol of AgI is prepared by mixing equal volumes of 0.1MAgNO3 and 0.2MKI, which of the following statement is correct?

1 Sol obtained is a positive sol with Ag+
2 Sol obtained is a positive sol with K+ adsorbed on AgI
3 Sol obtained is a negative sol with I absorbed on AgI
4 Sol obtained is a negtive sol with NO3 absorbed on AgI
CHXII05:SURFACE CHEMISTRY

320864 Statement A :
AgI sol is prepared by adding AgNO3 in excess of KI solution. The formed sol migrates towards anode under the influence of electric field.
Statement B :
Colloidal particles adsorb ions and thus becomes electrically charged.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII05:SURFACE CHEMISTRY

320865 As2O3 sol is a

1 positive colloid
2 negative colloid
3 neutral colloid
4 none of the above
CHXII05:SURFACE CHEMISTRY

320862 Isoelectric point refers to the H+ion concentration at which the colloidal particles:

1 Coagulate
2 Become electrically neutral
3 Can move to either electrode when subjected to an electric field
4 Reverse their electrical charge
CHXII05:SURFACE CHEMISTRY

320863 A sol of AgI is prepared by mixing equal volumes of 0.1MAgNO3 and 0.2MKI, which of the following statement is correct?

1 Sol obtained is a positive sol with Ag+
2 Sol obtained is a positive sol with K+ adsorbed on AgI
3 Sol obtained is a negative sol with I absorbed on AgI
4 Sol obtained is a negtive sol with NO3 absorbed on AgI
CHXII05:SURFACE CHEMISTRY

320864 Statement A :
AgI sol is prepared by adding AgNO3 in excess of KI solution. The formed sol migrates towards anode under the influence of electric field.
Statement B :
Colloidal particles adsorb ions and thus becomes electrically charged.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII05:SURFACE CHEMISTRY

320865 As2O3 sol is a

1 positive colloid
2 negative colloid
3 neutral colloid
4 none of the above
CHXII05:SURFACE CHEMISTRY

320862 Isoelectric point refers to the H+ion concentration at which the colloidal particles:

1 Coagulate
2 Become electrically neutral
3 Can move to either electrode when subjected to an electric field
4 Reverse their electrical charge
CHXII05:SURFACE CHEMISTRY

320863 A sol of AgI is prepared by mixing equal volumes of 0.1MAgNO3 and 0.2MKI, which of the following statement is correct?

1 Sol obtained is a positive sol with Ag+
2 Sol obtained is a positive sol with K+ adsorbed on AgI
3 Sol obtained is a negative sol with I absorbed on AgI
4 Sol obtained is a negtive sol with NO3 absorbed on AgI
CHXII05:SURFACE CHEMISTRY

320864 Statement A :
AgI sol is prepared by adding AgNO3 in excess of KI solution. The formed sol migrates towards anode under the influence of electric field.
Statement B :
Colloidal particles adsorb ions and thus becomes electrically charged.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII05:SURFACE CHEMISTRY

320865 As2O3 sol is a

1 positive colloid
2 negative colloid
3 neutral colloid
4 none of the above
CHXII05:SURFACE CHEMISTRY

320862 Isoelectric point refers to the H+ion concentration at which the colloidal particles:

1 Coagulate
2 Become electrically neutral
3 Can move to either electrode when subjected to an electric field
4 Reverse their electrical charge
CHXII05:SURFACE CHEMISTRY

320863 A sol of AgI is prepared by mixing equal volumes of 0.1MAgNO3 and 0.2MKI, which of the following statement is correct?

1 Sol obtained is a positive sol with Ag+
2 Sol obtained is a positive sol with K+ adsorbed on AgI
3 Sol obtained is a negative sol with I absorbed on AgI
4 Sol obtained is a negtive sol with NO3 absorbed on AgI
CHXII05:SURFACE CHEMISTRY

320864 Statement A :
AgI sol is prepared by adding AgNO3 in excess of KI solution. The formed sol migrates towards anode under the influence of electric field.
Statement B :
Colloidal particles adsorb ions and thus becomes electrically charged.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII05:SURFACE CHEMISTRY

320865 As2O3 sol is a

1 positive colloid
2 negative colloid
3 neutral colloid
4 none of the above