Sail E0 Webinar

General Knowledge > General Science

SURFACE TENSION MCQs

Total Questions : 21 | Page 2 of 3 pages
Question 11. Water beads up on the surface of a penny because of this property
  1.    Adhesion
  2.    High Surface Tension
  3.    Universal Solvent
  4.    Changes in Density
 Discuss Question
Answer: Option B. -> High Surface Tension
Question 12. Why was it important for you to take the average of several different trials in this lab?
  1.    in order to practice counting.
  2.    to make sure a single outlier or mistake doesn’t affect your overall conclusion
  3.    because this is the dependent variable in the experiment
  4.    because this is the independent variable in the experiment
 Discuss Question
Answer: Option B. -> to make sure a single outlier or mistake doesn’t affect your overall conclusion
Question 13. Surface tension is best described as
  1.    the ability of water molecules to stick to surfaces.
  2.    an unequal sharing of electrons between the oxygen and one hydrogen of a water molecule.
  3.    the ability of water molecules to dissolve many different chemical compounds.
  4.    a strong attraction between water molecules at the water’s surface.
 Discuss Question
Answer: Option D. -> a strong attraction between water molecules at the water’s surface.
Question 14. When there are no external forces,the shape of liquid drop is determined by
  1.    Surface tension of liquid
  2.    The density of liquid
  3.    The viscosity of liquid
  4.    The temperature of air
 Discuss Question
Answer: Option A. -> Surface tension of liquid
Question 15. How does soap affect the surface tension of water?
  1.    Soap increases surface tension, so more soapy drops fit on the penny than drops of regular tap water.
  2.    Soap decreases surface tension, so more soapy drops fit on the penny than drops of regular tap water.
  3.    Soap increases surface tension, so fewer soapy drops fit on the penny than drops of regular tap water.
  4.    Soap decreases surface tension, so fewer soapy drops fit on the penny than drops of regular tap water.
 Discuss Question
Answer: Option D. -> Soap decreases surface tension, so fewer soapy drops fit on the penny than drops of regular tap water.
Question 16. What is your initial observation in this lab?
  1.    how many drops of tap water fit on a penny
  2.    how many drops of soapy water fit on a penny
  3.    what happens when you add soap to tap water
  4.    none of the above
 Discuss Question
Answer: Option A. -> how many drops of tap water fit on a penny
Question 17. Antiseptic used in the cuts and wounds of human flesh have
  1.    low surface tension
  2.    high surface tension
  3.    low sticky
  4.    high viscosity
 Discuss Question
Answer: Option A. -> low surface tension
Question 18. Which of the following is/are involved in the formation of rain drops in a cloud?
  1.    saturation of vapour pressure
  2.    surface tension
  3.    viscosity
  4.    Both A & B
 Discuss Question
Answer: Option D. -> Both A & B
Question 19. Dimensional formula of surface tension is
  1.    [MLT].
  2.    [MT-2].
  3.    [M0T-2].
  4.    [ML2T-2].
 Discuss Question
Answer: Option B. -> [MT-2].
Question 20. The rise in the level of a liquid in a tube is h
  1.    0
  2.    h/2
  3.    h
  4.    2h
 Discuss Question
Answer: Option D. -> 2h

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0