All Courses
Get the App Signup / Login
Sign in Open App
UPSC Exam  >  UPSC Tests  >  Science & Technology for UPSC CSE  >  Test: Surface Tension, Elasticity - UPSC MCQ

Test: Surface Tension, Elasticity - UPSC MCQ


Test Description

10 Questions MCQ Test Science & Technology for UPSC CSE - Test: Surface Tension, Elasticity

Test: Surface Tension, Elasticity for UPSC 2024 is part of Science & Technology for UPSC CSE preparation. The Test: Surface Tension, Elasticity questions and answers have been prepared according to the UPSC exam syllabus.The Test: Surface Tension, Elasticity MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Surface Tension, Elasticity below.
Solutions of Test: Surface Tension, Elasticity questions in English are available as part of our Science & Technology for UPSC CSE for UPSC & Test: Surface Tension, Elasticity solutions in Hindi for Science & Technology for UPSC CSE course. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free. Attempt Test: Surface Tension, Elasticity | 10 questions in 10 minutes | Mock test for UPSC preparation | Free important questions MCQ to study Science & Technology for UPSC CSE for UPSC Exam | Download free PDF with solutions
Test: Surface Tension, Elasticity - Question 1
Save

Why do liquid drops, such as raindrops and dewdrops, tend to be spherical in shape?

Detailed Solution for Test: Surface Tension, Elasticity - Question 1

Explanation: Liquid drops like raindrops and dewdrops tend to be spherical because a sphere has the smallest surface area for a given volume, which helps minimize surface tension. This reduction in surface tension allows the liquid to achieve the lowest energy state. Therefore, liquid droplets naturally form a spherical shape to minimize surface tension.

Test: Surface Tension, Elasticity - Question 2
Save

What property of a liquid causes the legs of a pond skater to produce slight depressions on the water's surface?

Detailed Solution for Test: Surface Tension, Elasticity - Question 2
The property of a liquid that causes the legs of a pond skater to produce slight depressions on the water's surface is known as surface tension. Surface tension is the result of molecular attractions within the liquid, which causes the surface to act like an elastic "skin." It allows insects like pond skaters to walk on water and creates a slight depression when an object is placed on the surface.
1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Surface Tension, Elasticity - Question 3
Save

How do soaps and detergents affect the surface tension of water?

Detailed Solution for Test: Surface Tension, Elasticity - Question 3
Soaps and detergents lower the surface tension of water. They do this by interfering with the molecular attractions at the surface of the water, reducing the cohesive forces that create surface tension. This decrease in surface tension enhances water's wetting power, making it more effective at detaching dirt particles from clothes and utensils during washing.
Test: Surface Tension, Elasticity - Question 4
Save
In a capillary tube, if mercury is used instead of water, what happens to the level of mercury inside the tube?
Detailed Solution for Test: Surface Tension, Elasticity - Question 4
When mercury is used in a capillary tube instead of water, the level of mercury inside the tube is lower than the level outside the tube. This is because mercury molecules are less attracted to glass (adhesion) than to each other (cohesion). As a result, the mercury in the tube does not rise as much as water would, and the level inside the tube is lower.
Test: Surface Tension, Elasticity - Question 5
Save
What causes water to rise in a capillary tube when it is dipped in water?
Detailed Solution for Test: Surface Tension, Elasticity - Question 5
Water rises in a capillary tube when it is dipped in water due to adhesion between water molecules and the glass of the tube. Adhesion is the attractive force between unlike molecules, and in this case, water molecules are more attracted to the glass than to each other. This phenomenon is known as capillarity, and it allows liquids like water to be drawn into narrow tubes or porous materials.
Test: Surface Tension, Elasticity - Question 6
Save
What property of a material allows it to resume its original form and dimensions when external forces are removed?
Detailed Solution for Test: Surface Tension, Elasticity - Question 6
The property of a material that allows it to resume its original form and dimensions when external forces are removed is called elasticity. Elastic materials can deform when subjected to forces but return to their original shape and size when those forces are no longer applied.
Test: Surface Tension, Elasticity - Question 7
Save
What is the ratio of stress to strain called in the context of elasticity?
Detailed Solution for Test: Surface Tension, Elasticity - Question 7
The ratio of stress to strain in the context of elasticity is called Young's Modulus. Young's Modulus quantifies how a material responds to an applied stress by measuring the amount of strain it undergoes. It is an important property for understanding a material's elasticity.
Test: Surface Tension, Elasticity - Question 8
Save
What does Hooke's Law state in the context of material deformation?
Detailed Solution for Test: Surface Tension, Elasticity - Question 8
Hooke's Law states that, provided the elastic limit is not exceeded, the deformation of a material is proportional to the force applied to it. In other words, the amount of deformation a material undergoes is directly proportional to the force applied, as long as the material remains within its elastic limit.
Test: Surface Tension, Elasticity - Question 9
Save
According to Bernoulli's Principle, what happens to pressure in a fluid when the fluid's speed increases?
Detailed Solution for Test: Surface Tension, Elasticity - Question 9
According to Bernoulli's Principle, when the speed of a fluid (liquid or gas) in a pipe or container increases, the pressure within the fluid decreases. Conversely, when the fluid's speed decreases, the pressure increases. This principle helps explain various fluid dynamics phenomena.
Test: Surface Tension, Elasticity - Question 10
Save
What is the practical application of Bernoulli's Principle in aviation?
Detailed Solution for Test: Surface Tension, Elasticity - Question 10
The practical application of Bernoulli's Principle in aviation is the generation of lift on an aircraft wing. When air flows over the curved upper surface of an aircraft wing at higher speeds than the air beneath the wing, it creates lower pressure on top and higher pressure underneath, resulting in an upward force (lift) that allows an aircraft to become airborne. Bernoulli's Principle plays a crucial role in the physics of flight.
146 videos|358 docs|249 tests
Join Course
Information about Test: Surface Tension, Elasticity Page
In this test you can find the Exam questions for Test: Surface Tension, Elasticity solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Surface Tension, Elasticity, EduRev gives you an ample number of Online tests for practice

Top Courses for UPSC

146 videos|358 docs|249 tests
Join Course
Download as PDF

Top Courses for UPSC

Important Questions for Surface Tension, Elasticity

Find all the important questions for Surface Tension, Elasticity at EduRev.Get fully prepared for Surface Tension, Elasticity with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the Surface Tension, Elasticity syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of Surface Tension, Elasticity resources.

Surface Tension, Elasticity MCQs with Answers

Prepare for the Surface Tension, Elasticity within the UPSC exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for Surface Tension, Elasticity Science & Technology for UPSC CSE

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace Surface Tension, Elasticity with ease. Join thousands of successful students who have benefited from our trusted online resources.
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup