Delhi Police Constable Exam > Delhi Police Constable Questions > The angle of contact between a liquid and a s...
Start Learning for Free
The angle of contact between a liquid and a solid surface is 180°. This indicates:
- a)Complete wetting of the solid by the liquid
- b)No wetting of the solid by the liquid
- c)Partial wetting of the solid by the liquid
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The angle of contact between a liquid and a solid surface is 180°....
An angle of contact of 180° indicates no wetting of the solid by the liquid. The liquid does not spread on the solid surface.
Most Upvoted Answer
The angle of contact between a liquid and a solid surface is 180°....
Understanding Contact Angle
The contact angle is a crucial parameter in understanding the interaction between a liquid and a solid surface. It defines the degree to which a liquid droplet spreads or contracts on a surface.
Contact Angle of 180 Degrees
When the contact angle is 180 degrees, it indicates that the liquid does not wet the solid surface at all. Here’s why:
Conclusion
In summary, a contact angle of 180 degrees clearly indicates that there is no wetting of the solid by the liquid, confirming that option 'B' is correct. Understanding this concept is essential for applications in material science, engineering, and various industrial sectors.
The contact angle is a crucial parameter in understanding the interaction between a liquid and a solid surface. It defines the degree to which a liquid droplet spreads or contracts on a surface.
Contact Angle of 180 Degrees
When the contact angle is 180 degrees, it indicates that the liquid does not wet the solid surface at all. Here’s why:
- No Interaction: A contact angle of 180 degrees suggests that the liquid droplet is perfectly spherical and does not spread on the solid surface. This means there is no attractive force between the liquid molecules and the solid surface molecules.
- Complete Non-Wetting: In this scenario, the cohesive forces within the liquid are much stronger than the adhesive forces between the liquid and the solid. As a result, the liquid retains its shape and does not adhere to the surface, leading to a state of complete non-wetting.
- Hydrophobic Surfaces: Surfaces that exhibit such behavior are typically hydrophobic in nature. These surfaces repel water, which is why the droplet remains intact and does not spread out.
- Implications: This behavior is significant in various applications, including coatings, paints, and surface treatments, where non-wetting properties are desired.
Conclusion
In summary, a contact angle of 180 degrees clearly indicates that there is no wetting of the solid by the liquid, confirming that option 'B' is correct. Understanding this concept is essential for applications in material science, engineering, and various industrial sectors.
|
Explore Courses for Delhi Police Constable exam
|
|
Top Courses for Delhi Police ConstableView all
The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer?
Question Description
The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer? for Delhi Police Constable 2025 is part of Delhi Police Constable preparation. The Question and answers have been prepared according to the Delhi Police Constable exam syllabus. Information about The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Delhi Police Constable 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer?.
The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer? for Delhi Police Constable 2025 is part of Delhi Police Constable preparation. The Question and answers have been prepared according to the Delhi Police Constable exam syllabus. Information about The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Delhi Police Constable 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer?.
Solutions for The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Delhi Police Constable.
Download more important topics, notes, lectures and mock test series for Delhi Police Constable Exam by signing up for free.
Here you can find the meaning of The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The angle of contact between a liquid and a solid surface is 180°. This indicates:a)Complete wetting of the solid by the liquidb)No wetting of the solid by the liquidc)Partial wetting of the solid by the liquidd)None of the aboveCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Delhi Police Constable tests.
|
|
Explore Courses for Delhi Police Constable exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup