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MCQs

Total Questions : 1709 | Page 160 of 171 pages
Question 1591. 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 1592. The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately____________________?
  1.    1 mm
  2.    5 mm
  3.    10 mm
  4.    20 mm
  5.    30 mm
 Discuss Question
Answer: Option E. -> 30 mm
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1593. 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 1594. 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 1595. The atmospheric pressure with rise in altitude decreases____________________?
  1.    linearly
  2.    first slowly and then steeply
  3.    first steeply and then gradually
  4.    unpredictable
  5.    none of the above
 Discuss Question
Answer: Option B. -> first slowly and then steeply
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1596. An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of_________________?
  1.    1
  2.    1.2
  3.    0.8
  4.    0.75
  5.    1.25
 Discuss Question
Answer: Option D. -> 0.75
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1597. 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 1598. Newton’s law of viscosity is a relationship between________________?
  1.    shear stress anctthejiate of angular distortion
  2.    shear stress and viscosity
  3.    shear stress, velocity and viscosity
  4.    pressure, velocity and viscosity
  5.    shear stress, pressure and rate of angular distortion
 Discuss Question
Answer: Option A. -> shear stress anctthejiate of angular distortion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1599. Pressure of the order of 10″‘ torr can be measured by_______________ ?
  1.    Bourdon tube
  2.    Pirani Gauge
  3.    micro-manometer
  4.    ionisastion gauge
  5.    McLeod gauge
 Discuss Question
Answer: Option D. -> ionisastion gauge
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1600. Barometer is used to measure__________________?
  1.    pressure in pipes, channels etc
  2.    atmospheric pressure
  3.    very low pressure
  4.    difference of pressure between two points
  5.    rain level
 Discuss Question
Answer: Option B. -> atmospheric pressure
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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