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MCQs

Total Questions : 3147 | Page 313 of 315 pages
Question 3121. Free surface of a liquid tends to contract to the smallest possible area due to force of_______________?
  1.    surface tension
  2.    viscosity
  3.    friction
  4.    cohesion
  5.    adhesion
 Discuss Question
Answer: Option A. -> surface tension
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3122. The ratio of absolute viscosity to mass density is known as_________________?
  1.    specific viscosity
  2.    viscosity index
  3.    kinematic viscosity
  4.    coefficient of viscosity
  5.    coefficient of compressibility
 Discuss Question
Answer: Option C. -> kinematic viscosity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3123. Alcohol is used in manometer, because____________________?
  1.    its vapour pressure is low
  2.    it provides suitable meniscus for the inclined tube
  3.    its density is less
  4.    it provides longer length for a given pressure difference
  5.    it provides accurate readings
 Discuss Question
Answer: Option A. -> its vapour pressure is low
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3124. The density of water is 1000 kg/m3 at__________________?
  1.    0°C
  2.    0°K
  3.    4°C D. 20°C
  4.    all temperature
 Discuss Question
Answer: Option C. -> 4°C D. 20°C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3125. For manometer, a better liquid combination is one having ___________________?
  1.    higher surface tension
  2.    lower surface tension
  3.    surface tension is no criterion
  4.    high density and viscosity
  5.    low density and viscosity
 Discuss Question
Answer: Option A. -> higher surface tension
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3126. The property of fluid by virtue of which it offers resistance to shear is called________________?
  1.    surface tension
  2.    adhesion
  3.    cohesion
  4.    viscosity
  5.    all of the above
 Discuss Question
Answer: Option D. -> viscosity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3127. The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to_________________?
  1.    1000
  2.    2100
  3.    2700
  4.    10,000
  5.    21,000
 Discuss Question
Answer: Option E. -> 21,000
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3128. Units of surface tension are____________________?
  1.    energy/unit area
  2.    distance
  3.    both of the above
  4.    it has no units
  5.    none of the above
 Discuss Question
Answer: Option C. -> both of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3129. The bulk modulus of elasticity___________________?
  1.    has the dimensions of 1/pressure
  2.    increases with pressure
  3.    is large when fluid is more compressible
  4.    is independent of pressure and viscosity
  5.    is directly proportional to flow
 Discuss Question
Answer: Option B. -> increases with pressure
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3130. Viscosity of water in comparison to mercury is_________________?
  1.    higher
  2.    lower
  3.    same
  4.    higher/lower depending on temperature
  5.    unpredictable
 Discuss Question
Answer: Option A. -> higher
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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