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Small water droplets associated with dus...

Small water droplets associated with dust particles to form larger aggregates called ______

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**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks for the term used to describe larger aggregates formed when small water droplets associate with dust particles. 2. **Identifying the Process**: When small water droplets in the atmosphere come into contact with dust particles, they can coalesce or combine to form larger droplets. 3. **Recognizing the Term**: The phenomenon described is commonly known in meteorology. The larger aggregates formed from the combination of water droplets and dust particles are typically referred to as "raindrops." 4. **Final Answer**: Therefore, the answer to the question is "raindrops." ---
**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks for the term used to describe larger aggregates formed when small water droplets associate with dust particles. 2. **Identifying the Process**: When small water droplets in the atmosphere come into contact with dust particles, they can coalesce or combine to form larger droplets. 3. **Recognizing the Term**: The phenomenon described is commonly known in meteorology. The larger aggregates formed from the combination of water droplets and dust particles are typically referred to as "raindrops." ...
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Read the passage given below and answer the following questions: Some colloids are stable by their nature, i.e., gels, alloys, and solid foams. Gelatin and jellies are two common examples of a gel. The solid and liquid phases in a gel are interdispersed with both phases being continuous. In most systems, the major factor influencing the stability is the charge on the colloidal particles. If a particular ion is preferentially adsorbed on the surface of the particles, the particles in suspension will repel each other, thereby preventing the formation of aggregates that are larger than colloidal dimensions. The ion can be either positive or negative depending on the particular colloidal system, i.e., air bubbles accumulate negative ions, sulphur particles have a net negative charge in a sulphur sol, and the particles in a metal hydroxide sol are positively charged. Accumulation of charge on a surface is not an unusual phenomenon-dust is attracted to furniture surfaces by electrostatic forces. When salts are added to lyophobic colloidal systems the colloidal particles begin to form larger aggregates and a sediment forms as they settle. This phenomenon is called flocculation, and the suspension can be referred to as flocculated, or colloidally unstable. If the salt is removed, the suspension can usually be restored to its original state, this process is called deflocculation or peptization. The original and restored colloidal systems are called deflocculated, peptized, or stable sols. Why does a small amount of salt have such a dramatic effect on the stability of a lyophobic colloidal system? The answer lies in an understanding of the attractive and repulsive forces that exist between colloidal particles. Van der Waals forces are responsible for the attractions, while the repulsive forces are due to the surface charge on the particles. In a stable colloid, the repulsive forces are of greater magnitude than the attractive forces. The magnitude of the electrical repulsion is diminished by addition of ionized salt, which allows the dispersed particles to aggregate and flocculate. River deltas provide an example of this behaviour. A delta is formed at the mouth of a river because the colloidal clay particles are flocculated when the freshwater mixes with the salt water of the ocean (source: Sarquis, J. (1980). Colloidal systems. Journal of Chemical Education, 57(8), 602. doi:10.1021/ed057p602 ) Settling down of colloidal particles to form a suspension is called:

Read the passage given below and answer the following questions: Some colloids are stable by their nature, i.e., gels, alloys, and solid foams. Gelatin and jellies are two common examples of a gel. The solid and liquid phases in a gel are interdispersed with both phases being continuous. In most systems, the major factor influencing the stability is the charge on the colloidal particles. If a particular ion is preferentially adsorbed on the surface of the particles, the particles in suspension will repel each other, thereby preventing the formation of aggregates that are larger than colloidal dimensions. The ion can be either positive or negative depending on the particular colloidal system, i.e., air bubbles accumulate negative ions, sulphur particles have a net negative charge in a sulphur sol, and the particles in a metal hydroxide sol are positively charged. Accumulation of charge on a surface is not an unusual phenomenon-dust is attracted to furniture surfaces by electrostatic forces. When salts are added to lyophobic colloidal systems the colloidal particles begin to form larger aggregates and a sediment forms as they settle. This phenomenon is called flocculation, and the suspension can be referred to as flocculated, or colloidally unstable. If the salt is removed, the suspension can usually be restored to its original state, this process is called deflocculation or peptization. The original and restored colloidal systems are called deflocculated, peptized, or stable sols. Why does a small amount of salt have such a dramatic effect on the stability of a lyophobic colloidal system? The answer lies in an understanding of the attractive and repulsive forces that exist between colloidal particles. Van der Waals forces are responsible for the attractions, while the repulsive forces are due to the surface charge on the particles. In a stable colloid, the repulsive forces are of greater magnitude than the attractive forces. The magnitude of the electrical repulsion is diminished by addition of ionized salt, which allows the dispersed particles to aggregate and flocculate. River deltas provide an example of this behaviour. A delta is formed at the mouth of a river because the colloidal clay particles are flocculated when the freshwater mixes with the salt water of the ocean (source: Sarquis, J. (1980). Colloidal systems. Journal of Chemical Education, 57(8), 602. doi:10.1021/ed057p602 ) When Van der Waals forces are greater than forces due to the surface charge on the particles,

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PEARSON IIT JEE FOUNDATION-Water-Level-1
  1. In electrolysis of water gas is liberated at cathode.

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  2. The change of water into water vapour at 30^(@)C at slow rate is calle...

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  3. Small water droplets associated with dust particles to form larger agg...

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  4. Percentage of water in animals varies from to .

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  5. Which of the following processes is not involved in the purification o...

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  6. Which of the following sources of water is not used for drinking purpo...

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  7. Density of water is maximum

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  8. Which of the following substances used in agriculture does not cause w...

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  9. Metals present in permutit are

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  10. Which of the following has the highest specific heat?

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  11. Which of the following types of water is a bad conductor of electricit...

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  12. Which of the following is not the control measure of water pollution?

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  13. The pair of ions which does not cause hardness of water is

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  14. Regeneration of anion exchange resin is carried out by passing

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  15. Spring water usually contains

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  16. Which of the following types of water does not contain dissolved gases...

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  17. Which of the following chemical substances can be used for removing pe...

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  18. When the temperature of water rises from 0^(@)C to 10^(@)C,the density...

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  19. The volumetric composition of water is

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  20. Arrange the process in sequence for the purification of drinking water...

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