Brownian movement is caused by:

1. Colloidal solution.

2. True solution.

3. Suspension having size <1000 mμ.

4. All of the above.

Subtopic:  Colloidal Solution |
 61%
From NCERT
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A dust storm is:

1. Dispersion of solid in gas

2. Dispersion of a gas in solid

3. Dispersion of solid in solid

4. Dispersion of a gas in liquid

Subtopic:  Colloidal Solution |
 86%
From NCERT
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Which is not a colloid?

1. Chlorophyll                                   

2. Egg white

3. Ruby glass                                   

4. Milk

Subtopic:  Colloidal Solution |
 71%
From NCERT
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Chemisorption is:

1. multimolecular in nature

2. reversible

3. often highly specific and directional

4. not very specific

Subtopic:  Adsorption and Absorption |
 85%
From NCERT
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The catalyst used in the lead-chamber process of sulphuric acid is:

1. platinum

2. nitric oxide

3. nickel

4. vanadium pentoxide

Subtopic:  Catalyst |
From NCERT
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Medicines are more effective if they are used in:

1. Colloidal state

2. Solid-state

3. Solution state

4. None of the above 

Subtopic:  Colloidal Solution |
 89%
From NCERT
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Hydrolysis of maltose (C12H22O11) by maltase gives:

1. glucose                         

2. fructose

3. both 1 and 2         

4. none of these

Subtopic:  Catalyst |
 63%
From NCERT
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Hydrolysis of cane-sugar is catalysed by:

1. H+                         

2. mineral acids

3. enzymes                 

4. all of these

Subtopic:  Catalyst |
 62%
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Which is not shown by sols?

1. Adsorption

2. Tyndall effect

3. Flocculation

4. Paramagnetism

Subtopic:  Lyophilic & Lyophobic Sol |
 82%
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Detergent action of synthetic detergents is due to their:

1. interfacial area

2. high molar mass

3. ionization

4. emulsifying properties

Subtopic:  Emulsions |
 78%
From NCERT
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