Silver iodide is used for producing artificial rain because AgI is:
1. Easy to spray at high altitudes.
2. Easy to synthesize.
3. Having crystal structure similar to ice.
4. Insoluble in water.

Subtopic:  Colloidal Solution |
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Which is an emulsion?

1. Boot polish                             

2. Lipstick

3. Shampoo                               

4. All of these

Subtopic:  Emulsions |
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Egg albumin is:

1. reversible colloid

2. lyophilic colloid

3. protective colloid

4. all of these

Subtopic:  Colloidal Solution |
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The active species in Zeigler-Natta polymerisation of ethylene is:

1. AlCl3

2. Et3Al

3. H2C=CH2

4. Ti+3

Subtopic:  Catalyst |
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The gas that is adsorbed strongly by charcoal is: 

1. CO2                               

2. N2

3. H2                                 

4. NH3

Subtopic:  Adsorption and Absorption |
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A small amount of phosphoric acid can be used to prevent H2O2 decomposition. This an example of?

1. Neutralization                             

2. Negative catalysis

3. Positive catalysis                         

4. Catalytic poisoning

Subtopic:  Catalyst |
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Which ion is adsorbed when a diluted aqueous solution of AgNO3 (excess) is added to KI solution, resulting in formation of positively charged sol particles of AgI?

1. K+

2. Ag+

3. I-

4. NO3-

Subtopic:  Adsorption and Absorption |
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Milk contains a protein that is very good for health. The protein is:

1. caffeine

2. calciferol

3. keratin

4. casein

Subtopic:  Colloidal Solution | Lyophilic & Lyophobic Sol |
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Emulsions of polyvinylacetate are used in:

1. polishes

2. latex paints

3. fire works

4. rayons

Subtopic:  Emulsions |
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What is the simultaneous outcome of internal liquid from gels called?

1. Synerisis                         

2. Thixotropy

3. Swelling                           

4. None of the above

Subtopic:  Colloidal Solution |
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