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Surface Tension Video Lecture | Physical Chemistry
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FAQs on Surface Tension Video Lecture - Physical Chemistry
| 1. What is surface tension? |  |
Ans. Surface tension is the property of a liquid that allows it to resist external forces and minimize its surface area. It is caused by the cohesive forces between the molecules on the surface of the liquid.
| 2. How is surface tension measured? | |
Ans. Surface tension can be measured using various methods. One common method is the capillary rise method, where the height to which a liquid rises in a capillary tube is measured. Another method is the drop weight method, where a drop of liquid is allowed to fall and the time taken for it to break away is measured.
| 3. What factors affect surface tension? | |
Ans. Several factors can influence surface tension, including temperature, presence of impurities, and the nature of the liquid. Generally, surface tension decreases with increasing temperature and increasing impurities in the liquid.
| 4. How does surface tension affect floating objects? | |
Ans. Surface tension plays a crucial role in determining whether an object will float or sink on the surface of a liquid. If the object's weight is greater than the buoyant force provided by the surface tension, it will sink. On the other hand, if the object's weight is less than the buoyant force, it will float.
| 5. What are the practical applications of surface tension? | |
Ans. Surface tension has several practical applications. It is used in detergents and soaps to help them spread and penetrate stains. It is also used in inkjet printing to control the formation of droplets. Surface tension is important in the functioning of biological systems, such as the movement of water through plants and insects walking on water.
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Dec 23, 2024 Last updated |
Video Description: Surface Tension for Chemistry 2024 is part of Physical Chemistry preparation.
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