The index for the Gold number is:
1. Protective power of lyophilic colloid.
2. Purity of gold.
3. Metallic gold.
4. Electroplated gold.
Select the correct option based on statements below:
Assertion (A): | A hydrophilic sol is more stable than a hydrophobic sol. |
Reason (R): | When compared to hydrophobic sol, colloidal particles in hydrophilic sol are heavily hydrated. |
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. | Both (A) and (R) are false. |
Select the correct option based on statements below:
Assertion (A): | One part of micelles is lyophilic in nature. |
Reason (R): | Micelles have a lyophillic COO group. |
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. | Both (A) and (R) are false. |
Hydrophobic sols are easily coagulated as?
1. | The particles present in them come closer and form aggregates, leading to precipitation. |
2. | The particles present in them move farther and form aggregates, which leads to precipitation. |
3. | The particles present in them come closer and do not form aggregates, leading to precipitation. |
4. | The particles present in them move farther and do not form aggregates, leading to precipitation. |
The surface tension of lyophilic sols is:
1. Lower than H2O
2. More than H2O
3. Equal to H2O
4. None of the above.
What is a solution that isn't a lyophilic colloid?
1. Milk
2. Gum
3. Fog
4. Blood