Which of the following electrolytes, Na2SO4, CaCl2, Al2(SO4)3, and NH4Cl, is the most effective coagulating agent for Sb2S3 sol?

1. Na2SO4                             

2. CaCl2

3. Al2(SO4)3                           

4. NH4Cl

Subtopic:  Colloidal Solution |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Among the given options, which element is the minimum required for precipitation of a negatively charged suspension of clay in water?

1. Aluminium chloride.

2. Potassium sulphate.

3. Sodium hydroxide.

4. Hydrochloric acid.

Subtopic:  Colloidal Solution |
 67%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The arsenious sulphide sol has negative charge. The maximum coagulationg power for precipitating it is of :

1. 0.1 N Zn(NO3)2

2. 0.1 N Na3PO4

3. 0.1 N ZnSO2

4. 0.1 N AlCl3

Subtopic:  Colloidal Solution |
 69%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

An emulsifier is a substance that:

1. Homogenesis the emulsion

2. Stabilizes the emulsion

3. Retards the dispersion of liquid in the liquid

4. Coagulates the emulsion

Subtopic:  Emulsions |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

What is a colloidal solution that is commonly used to treat skin diseases?

1. Colloidal sulphur.                   

2. Colloidal silver.

3. Colloidal gold.                         

4. Colloidal antimony.

Subtopic:  Colloidal Solution |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Adsorption is accompanied by:

1. decrease in entropy of the system

2. decrease in enthalpy of the system

3. TS for the process is negative

4. all of the above

Subtopic:  Adsorption and Absorption |
 90%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

How is the flocculation value expressed?

1. Millimole per litre.

2. Mole per litre.

3. Gram per litre.

4. Mole per millilitre.

Subtopic:  Colloidal Solution |
 83%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A liquid which makes scatters a beam of light (visible in a dark room) but leaves no residue when passed through a filter paper is best described as:

1. A suspension

2. Sol

3. True solution

4. None of the above

Subtopic:  Colloidal Solution |
 56%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Which is an emulsifier?

1. Soap

2. Oil

3. NaCl

4. Water

Subtopic:  Emulsions |
 69%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

KClO3 on heating decomposes into KCl and O2. If some MnO2 is added, the reaction goes much faster because:

1. MnO2 decomposes to give oxygen.

2. MnO2 provides  heat by reacting.

3. Better contact is provided by MnO2

4. MnO2 acts as a catalyst.

Subtopic:  Catalyst |
 84%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch