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MCQs

Total Questions : 3147 | Page 312 of 315 pages
Question 3111. The vapour pressure over the concave surface is______________________?
  1.    less man the vapour pressure over the plane surface
  2.    equal to the vapour pressure over the plane surface
  3.    greater than the vapour pressure over the plane surface
  4.    zero
  5.    none of the above
 Discuss Question
Answer: Option A. -> less man the vapour pressure over the plane surface
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3112. To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than____________________?
  1.    2.4 m above the hydraulic gradient
  2.    6.4 m above the hydraulic gradient
  3.    10.0 m above the hydraulic gradient
  4.    5.0 above the hydraulic gradient
  5.    none of the above
 Discuss Question
Answer: Option B. -> 6.4 m above the hydraulic gradient
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3113. Surface energy per unit area of a surface is numerically equal to _____________________?
  1.    atmospheric pressure
  2.    surface tension
  3.    force of adhesion
  4.    force of cohesion
  5.    viscosity
 Discuss Question
Answer: Option B. -> surface tension
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3114. The difference of pressure between the inside and outside of a liquid drop is _______________?
  1.    p = Txr
  2.    p = T/r
  3.    p = T/2r
  4.    p = 2T/r
  5.    none of the above
 Discuss Question
Answer: Option D. -> p = 2T/r
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3115. Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the_________________?
  1.    force of adhesion
  2.    force of cohesion
  3.    force of friction
  4.    force of diffusion
  5.    none of die above
 Discuss Question
Answer: Option B. -> force of cohesion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3116. Falling drops of water become spheres due to the property of ____________________?
  1.    adhesion
  2.    cohesion
  3.    surface tension
  4.    viscosity
  5.    compressibility
 Discuss Question
Answer: Option C. -> surface tension
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3117. The buoyancy depends on___________________?
  1.    mass of liquid displaced
  2.    viscosity of the liquid
  3.    pressure of the liquid displaced
  4.    depth of immersion
  5.    none of the above
 Discuss Question
Answer: Option A. -> mass of liquid displaced
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3118. Specific weight of sea water is more that of pure water because it contains_________________?
  1.    dissolved air
  2.    dissolved salt
  3.    suspended matter
  4.    all of the above
  5.    heavy water
 Discuss Question
Answer: Option D. -> all of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3119. Alcohol is used in manometers because___________________?
  1.    it has low vapour pressure
  2.    it is clearly visible
  3.    it has low surface tension
  4.    it can provide longer column due to low density
  5.    is provides suitable meniscus
 Discuss Question
Answer: Option D. -> it can provide longer column due to low density
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3120. The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be ________________?
  1.    500 kg
  2.    1000 kg
  3.    1500 kg
  4.    2000 kg
  5.    4000 kg
 Discuss Question
Answer: Option D. -> 2000 kg
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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