Hydraulics & Fluid Mechanics objective question and answer

 

Hydraulics & Fluid Mechanics objective question and answer

Question No. 201

An ideal flow of any fluid must satisfy 

(A) Pascal law 

(B) Newton's law of viscosity 

(C) Boundary layer theory 

(D) Continuity equation 

Answer: Option D 

Question No. 202

The height of a water column equivalent to a pressure of 0.15 MPa is 

(A) 15.3 m 

(B) 25.3 m 

(C) 35.3 m 

(D) 45.3 m 

Answer: Option A 

Question No. 203

The region between the separation streamline and the boundary surface of the solid body is 

known as 

(A) Wake 

(B) Drag 

(C) Lift 

(D) Boundary layer 

Question No. 204

The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (ω) rad/s about its vertical axis, is

A. π w ω² r²/4g

B. π w ω² r³/4g

C. π w ω² r⁴/4g

D. π w ω² r²/2g

Answer: Option A

Question No. 205

Froude number is significant in 

(A) Supersonics, as with projectile and jet propulsion 

(B) Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. 

(C) Simultaneous motion through two fluids where there is a surface of discontinuity, gravity 

forces, and wave making effect, as with ship's hulls 

(D) All of the above 

Answer: Option C 

Question No. 206

The ratio of specific weight of a liquid to the specific weight of pure water at a standard 

temperature is called 

(A) Density of liquid 

(B) Specific gravity of liquid 

(C) Compressibility of liquid 

(D) Surface tension of liquid 

Answer: Option B 

Question No. 207

A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight 

of 1 tonne. The force required on plunger is equal to 

(A) 10 kg 

(B) 100 kg 

(C) 1000 kg 

(D) 1 kg 

Answer: Option A 

Question No. 208

The total head of a liquid particle in motion is equal to 

(A) Pressure head + kinetic head + potential head 

(B) Pressure head - (kinetic head + potential head) 

(C) Potential head - (pressure head + kinetic head) 

(D) Kinetic head - (pressure head + potential head) 

Answer: Option A

Question No. 209

The bulk modulus of elasticity with increase in pressure 

(A) Increases 

(B) Decreases 

(C) Remain constant 

(D) Increases first up to certain limit and then decreases 

Answer: Option A 

Question No. 210

The diameter of the nozzle (d) for maximum transmission of power is given by (where D = 

Diameter of pipe, f l = Length of pipe) 

A) 1/2

B) 1/3

C) 1/4

D) 1/5

Answer: Option C 

Question No. 211

Free surface of a liquid tends to contract to the smallest possible area due to force of 

(A) Surface tension 

(B) Viscosity 

(C) Friction 

(D) Cohesion 

Answer: Option A 

Question No. 212

The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the 

correct statement. 

(A) The bodies A and B have equal stability 

(B) The body A is more stable than body B 

(C) The body B is more stable than body A 

(D) The bodies A and B are unstable 

Answer: Option C 

Question No. 213

The rise or depression of liquid in a tube due to surface tension will increase in size of tube will 

(A) Increase 

(B) Remain unaffected 

(C) May increase or decrease depending on the characteristics of liquid 

(D) Decrease 

Answer: Option D 

Question No. 214

A body floats in stable equilibrium 

(A) When its meatcentric height is zero

(B) When the metacentre is above e.g. 

(C) When its e.g. is below its center of buoyancy 

(D) Metacentre has nothing to do with position of e.g. for determining stability 

Answer: Option B 

Question No. 215

The total pressure on a horizontally immersed surface is (where w = Specific weight of the 

liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed 

surface from the liquid surface) 

(A) wA

(B) wx

(C) wAx

(D) wA/x

Answer: Option C 

Question No. 216

The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe. 

(A) Less than 

(B) More than 

(C) Equal to 

(D) None of these 

Answer: Option B 

Question No. 217

The line of action of the buoyant force acts through the Centroid of the 

(A) Submerged body 

(B) Volume of the floating body 

(C) Volume of the fluid vertically above the body 

(D) Displaced volume of the fluid 

Answer: Option D 

Question No. 218

The intensity of pressure at any point, in a liquid, is 

(A) Directly proportional to the area of the vessel containing liquid 

(B) Directly proportional to the depth of liquid from the surface 

(C) Directly proportional to the length of the vessel containing liquid 

(D) Inversely proportional to the depth of liquid from the surface 

Answer: Option B 

Question No. 219

During the opening of a valve in a pipe line, the flow is 

(A) Steady 

(B) Unsteady 

(C) Uniform 

(D) Laminar

Answer: Option B 

Question No. 220

A manometer is used to measure 

(A) Atmospheric pressure 

(B) Pressure in pipes and channels 

(C) Pressure in Venturimeter 

(D) Difference of pressures between two points in a pipe 

Answer: Option B 

Question No. 221

For hypersonic flow, the Mach number is 

(A) Unity 

(B) Greater than unity 

(C) Greater than 2 

(D) Greater than 4 

Answer: Option D 

Question No. 222

The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta) 

(A) 2gH

(B) H × g)

(C) 2g × H

(D) 2gh)

Answer: Option D 

Question No. 223

For pipes, laminar flow occurs when Reynolds number is 

(A) Less than 2000 

(B) Between 2000 and 4000 

(C) More than 4000 

(D) Less than 4000 

Answer: Option A 

Question No. 224

When the flow in an open channel is gradually varied, the flow is said to be 

(A) Steady uniform flow 

(B) Steady non-uniform flow 

(C) Unsteady uniform flow 

(D) Unsteady non-uniform flow 

Answer: Option B 

Question No. 225

Property of a fluid by which molecules of different kinds of fluids are attracted to each other is 

called

(A) Adhesion 

(B) Cohesion 

(C) Viscosity 

(D) Compressibility 

Answer: Option A 

Question No. 226

In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, 

then the mouthpiece is said to be 

(A) Running full 

(B) Running free 

(C) Partially running full 

(D) Partially running free 

Answer: Option B 

Question No. 227

The units of kinematic viscosity are 

(A) Metres² per sec 

(B) kg sec/metre 

(C) Newton-sec per metre 

(D) Newton-sec per metre 

Answer: Option A 

Question No. 228

The length of a liquid stream while flowing over a weir __________ at the ends of the sill. 

(A) Expands 

(B) Does not change 

(C) Contracts 

(D) None of these 

Answer: Option C 

Question No. 229

Newton's law of viscosity is a relationship between 

(A) Shear stress and the rate of angular distortion 

(B) Shear stress and viscosity 

(C) Shear stress, velocity and viscosity 

(D) Pressure, velocity and viscosity 

Answer: Option A 

Question No. 230

The total energy line lies over the hydraulic gradient line by an amount equal to the 

(A) Pressure head 

(B) Velocity head 

(C) Pressure head + velocity head 

(D) Pressure head - velocity head

Answer: Option B 

Question No. 231

Choose the wrong statement 

(A) The horizontal component of the hydrostatic force on any surface is equal to the normal 

force on the vertical projection of the surface 

(B) The horizontal component acts through the center of pressure for the vertical projection 

(C) The vertical component of the hydrostatic force on any surface is equal to the weight of the 

volume of the liquid above the area 

(D) The vertical component passes through the center of pressure of the volume 

Answer: Option D 

Question No. 232

In open channels, the specific energy is the 

(A) Total energy per unit discharge 

(B) Total energy measured with respect to the datum passing through the bottom of the 

channel 

(C) Total energy measured above the horizontal datum 

(D) Kinetic energy plotted above the free surface of water 

Answer: Option B 

Question No. 233

For a floating body to be in stable equilibrium, its metacentre should be 

(A) Below the center of gravity 

(B) Below the center of buoyancy 

(C) Above the center of buoyancy 

(D) Above the center of gravity 

Answer: Option D 

Question No. 234

A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of 

the tank is 

(A) 2.89 kN 

(B) 8.29 kN 

(C) 9.28 kN 

(D) 28.9 kN 

Answer: Option B 

Question No. 235

Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface 

will be 

(A) 1000 kg 

(B) 4000 kg 

(C) 2000 kg 

(D) 8000 kg

Answer: Option A 

Question No. 236

If a body floating in a liquid occupies a new position and remains at rest in this new position, when 

given a small angular displacement, the body is said to be in __________ equilibrium. 

(A) Neutral 

(B) Stable 

(C) Unstable 

(D) None of these 

Answer: Option A 

Question No. 237

A streamline is defined as the line 

(A) Parallel to central axis flow 

(B) Parallel to outer surface of pipe 

(C) Of equal velocity in a flow 

(D) Along which the pressure drop is uniform 

Answer: Option C 

Question No. 238

The flow in a pipe or channel is said to be non-uniform when 

(A) The liquid particles at all sections have the same velocities 

(B) The liquid particles at different sections have different velocities 

(C) The quantity of liquid flowing per second is constant 

(D) Each liquid particle has a definite path 

Answer: Option B 

Question No. 239

Hydrometer is used to determine 

(A) Specific gravity of liquids 

(B) Specific gravity of solids 

(C) Specific gravity of gases 

(D) Relative humidity 

Answer: Option A 

Question No. 240

The dynamic viscosity of the liquid __________ with rise in temperature. 

(A) Remain unaffected 

(B) Increases 

(C) Decreases 

(D) None of these 

Answer: Option C 

Question No. 241

For pipes, turbulent flow occurs when Reynolds number is

(A) Less than 2000 

(B) Between 2000 and 4000 

(C) More than 4000 

(D) Less than 4000 

Answer: Option C 

Question No. 242

The velocity of the liquid flowing through the divergent portion of a Venturimeter 

(A) Remains constant 

(B) Increases 

(C) Decreases 

(D) Depends upon mass of liquid 

Answer: Option C 

Question No. 243

The volumetric change of the fluid caused by a resistance is known as 

(A) Volumetric strain 

(B) Volumetric index 

(C) Compressibility 

(D) Adhesion 

Answer: Option C 

Question No. 244

If the depth of water in an open channel is less than the critical depth, the flow is called 

(A) Critical flow 

(B) Turbulent flow 

(C) Tranquil flow 

(D) Torrential flow 

Answer: Option D 

Question No. 245

Choose the wrong statement 

(A) Fluids are capable of flowing 

(B) Fluids conform to the shape of the containing vessels 

(C) When in equilibrium, fluids cannot sustain tangential forces 

(D) When in equilibrium, fluids can sustain shear forces 

Answer: Option D 

Question No. 246

An orifice is said to be large, if 

(A) The size of orifice is large 

(B) The velocity of flow is large 

(C) The available head of liquid is more than 5 times the height of orifice 

(D) The available head of liquid is less than 5 times the height of orifice 

Answer: Option D

Question No. 247

A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction 

of it volume is under mercury? 

(A) The metal piece will simply float over the mercury 

(B) The metal piece will be immersed in mercury by half 

(C) Whole of the metal piece will be immersed with its top surface just at mercury level 

(D) Metal piece will sink to the bottom 

Answer: Option C 

Question No. 248

The centre of pressure acts __________ the centre of gravity of immersed surface. 

(A) At 

(B) Above 

(C) Below 

(D) None of these 

Answer: Option C 

Question No. 249

Dynamic viscosity of most of the liquids with rise in temperature 

(A) Increases 

(B) Decreases 

(C) Remain unaffected 

(D) Unpredictable 

Answer: Option B 

Question No. 250

The discharge over a right angled notch is (where H = Height of liquid above the apex of notch) 

(A) (8/15) Cd. 2g. H

(B) (8/15) Cd. 2g. H3/2

(C) (8/15) Cd. 2g. H²

(D) (8/15) Cd. 2g. H5/2

Answer: Option D 

Question No. 251

A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The 

hydrostatic force on square surface is 

(A) 9,000 kg 

(B) 13,500 kg 

(C) 18,000 kg 

(D) 27,000 kg 

Answer: Option B 

Question No. 252

The discharge through a siphon spillway is 

(A) Cd × a × √(2gH)

(B) Cd × a × √(2g) × H^3/2

(C) Cd × a × √(2g) × H^2

(D) Cd × a × √(2g) × H^5/2

Answer: Option A 

Question No. 253

Select the correct statement 

(A) Local atmospheric pressure depends upon elevation of locality only 

(B) Standard atmospheric pressure is the mean local atmospheric pressure a* sea level 

(C) Local atmospheric pressure is always below standard atmospheric pressure 

(D) A barometer reads the difference between local and standard atmospheric pressure 

Answer: Option B 

Question No. 254

The shear stress-strain graph for a Newtonian fluid is a 

(A) Straight line 

(B) Parabolic curve 

(C) Hyperbolic curve 

(D) Elliptical 

Answer: Option A 

Question No. 255

The flow in which the particles of a fluid attain such velocities that varies from point to point in 

magnitude and direction as well as from instant to instant, is known as 

(A) One dimensional flow 

(B) Uniform flow 

(C) Steady flow 

(D) Turbulent flow 

Answer: Option D 

Question No. 256

For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle 

remains the same, while the particle moves from one point to another. This statement is called 

(A) Continuity equation 

(B) Bernoulli's equation 

(C) Pascal's law 

(D) Archim

Answer: Option B 

Question No. 257

Uniform flow occurs when 

(A) The direction and magnitude of the velocity at all points are identical 

(B) The velocity of successive fluid particles, at any point, is the same at successive periods of 

time 

(C) The magnitude and direction of the velocity do not change from point to point in the fluid

(D) The fluid particles move in plane or parallel planes and the streamline patterns are identical 

in each pleasure 

Answer: Option C 

Question No. 258

The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) 

through the channel) 

(A) (q/g)1/2 

(B) (q²/g)1/3

(C) (q³/g)1/4

(D) 1/5

Answer: Option B 

Question No. 259

At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear 

stress will be 

(A) Minimum 

(B) Maximum 

(C) Zero 

(D) Could be any value 

Answer: Option D 

Question No. 260

The discharge through a channel of trapezoidal section is maximum when 

(A) Width of channel at the top is equal to twice the width at the bottom 

(B) Depth of channel is equal to the width at the bottom 

(C) The sloping side is equal to half the width at the top 

(D) The sloping side is equal to the width at the bottom 

Answer: Option C 

Question No. 261

Piezometer is used to measure 

(A) Pressure in pipe, channels etc. 

(B) Atmospheric pressure 

(C) Very low pressures 

(D) Difference of pressure between two points 

Answer: Option C 

Question No. 262

The point at which the resultant pressure on an immersed surface acts, is known as 

(A) Centre of gravity 

(B) Centre of depth 

(C) Centre of pressure 

(D) Centre of immersed surface 

Question No. 263

Choose the wrong statement 

(A) Any weight, floating or immersed in a liquid, is acted upon by a buoyant force 

(B) Buoyant force is equal to the weight of the liquid displaced 

(C) The point through which buoyant force acts, is called the center of buoyancy 

(D) Center of buoyancy is located above the center of gravity of the displaced liquid 

Answer: Option D 

Question No. 264

The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the 

centre of gravity. 

(A) IG / bellow 

(B) IG / above 

(C) / IG bellow 

(D) / IG above 

Answer: Option A 

Question No. 265

The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm". The pressure 

at 2.5 m below the oil surface will be 

(A) 2 metres of water column 

(B) 3 metres of water column 

(C) 3.5 metres of water column 

(D) 4 m of water column 

Answer: Option B 

Question No. 266

The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is 

(A) Directly proportional to (radius)2

(B) Inversely proportional to (radius)2

(C) Directly proportional to (radius)4

(D) Inversely proportional to (radius)4 Answer: Option C 

Question No. 267

The flow which neglects changes in a transverse direction is known as 

(A) One dimensional flow 

(B) Uniform flow 

(C) Steady flow 

(D) Turbulent flow 

Answer: Option A 

Question No. 268

Normal depth in open channel flow is the depth of flow corresponding to 

(A) Steady flow

(B) Unsteady flow 

(C) Laminar flow 

(D) Uniform flow 

Answer: Option D 

Question No. 269

A moving fluid mass may be brought to a static equilibrium position, by applying an imaginary 

inertia force of the same magnitude as that of the accelerating force but in the opposite direction. 

This statement is called 

(A) Pascal's law 

(B) Archimedes's Principle

(C) D-Alembert's principle 

(D) None of these 

Answer: Option C 

Question No. 270

The mass per unit volume of a liquid at a standard temperature and pressure is called 

(A) Specific weight 

(B) Mass density 

(C) Specific gravity 

(D) None of these 

Answer: Option B 

Question No. 271

A large Reynold number is indication of 

(A) Smooth and streamline flow 

(B) Laminar flow 

(C) Steady flow 

(D) Highly turbulent flow 

Answer: Option D 

Question No. 272

Which of the following statement is wrong? 

(A) A flow whose streamline is represented by a curve is called two dimensional flow. 

(B) The total energy of a liquid particle is the sum of potential energy, kinetic energy and 

pressure energy. 

(C) The length of divergent portion in a Venturimeter is equal to the convergent portion. 

(D) A pitot tube is used to measure the velocity of flow at the required point in a pipe. 

Answer: Option C 

Question No. 273

Density of water is maximum at 

(A) 0° C 

(B) 0° K 

(C) 4° C

Answer: Option C

(D) 100° C 

Answer: Option C 

Question No. 274

A weir is said to be broad crested weir, if the width of the crest of the weir is ________ half the 

height of water above the weir crest. 

(A) Equal to 

(B) Less than 

(C) More than 

(D) None of these 

Answer: Option C 

Question No. 275

The bulk modulus of elasticity 

(A) Has the dimensions of 1/pressure 

(B) Increases with pressure 

(C) Is large when fluid is more compressible 

(D) Is independent of pressure and viscosity 

Answer: Option B

Question No. 276

A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be

A. (2A√H₁)/(Cd × a√2g)

B. (2AH₁)/(Cd × a√2g)

C. (2AH₁3/2)/(Cd × a√2g)

D. (2AH₁²)/(Cd × a√2g)

Answer: Option A

Question No. 277

Kinematic viscosity is equal to 

(A) Dynamic viscosity/density 

(B) Dynamic viscosity × density 

(C) Density/dynamic viscosity 

(D) 1/dynamic viscosity × density 

Answer: Option A 

Question No. 278

The atmospheric pressure at sea level is 

(A) 103 kN/m2

(B) 10.3 m of water 

(C) 760 mm of mercury 

(D) All of these 

Answer: Option D

Question No. 279

The conditions for the stable equilibrium of a floating body are 

(A) The metacentre should lie above the center of gravity 

(B) The center of buoyancy and the center of gravity must lie on the same vertical line 

(C) A righting couple should be formed 

(D) All the above are correct 

Answer: Option D 

Question No. 280

A glass tube of smaller diameter is used while performing an experiment for the capillary rise of 

water because 

(A) It is easier to see through the glass tube 

(B) Glass tube is cheaper than a metallic tube 

(C) It is not possible to conduct this experiment with any other tube 

(D) All of the above 

Answer: Option A 

Question No. 281

To avoid an interruption in the flow of a siphon, an air vessel is provided 

(A) At the inlet 

(B) At the outlet 

(C) At the summit 

(D) At any point between inlet and outlet 

Answer: Option C 

Question No. 282

When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a 

rectangular weir is 

(A) 1.84(L - 0.1nH)H

3/2

(B) 1.84(L - nH)H

2

(C) 1.84(L - 0.1nH)H

5/2

(D) 1.84(L - nH)H

3

Answer: Option A 

Question No. 283

In an isothermal atmosphere, the pressure 

(A) Decreases linearly with elevation 

(B) Remain constant 

(C) Varies in the same way as the density 

(D) Increases exponentially with elevation 

Answer: Option C 

Question No. 284

The pressure of a liquid measured with the help of a Piezometer tube is 

(A) Vacuum pressure

(B) Gauge pressure 

(C) Absolute pressure 

(D) Atmospheric pressure 

Answer: Option B 

Question No. 285

If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm", the pressure at 

a depth of 50 m below the oil surface will be 

(A) 2 meters of water column 

(B) 3 meters of water column 

(C) 5 meters of water column 

(D) 6 meters of water Column 

Answer: Option D 

Question No. 286

The pressure intensity in kN/m2

 (or kPa) at any point in a liquid is (where w = Specific weight of 

liquid, and h = Depth of liquid from the surface) 

(A) w

(B) wh

(C) w/h

(D) h/w

Answer: Option B 

Question No. 287

The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid 

displaced by the body. This definition is according to 

(A) Buoyancy 

(B) Equilibrium of a floating body 

(C) Archimedes' principle 

(D) Bernoulli's theorem 

Answer: Option C 

Question No. 288

The liquid used in manometers should have 

(A) Low density 

(B) High density 

(C) Low surface tension 

(D) High surface tension 

Answer: Option D 

Question No. 289

Which of the following instrument can be used for measuring speed of an aeroplane? 

(A) Venturimeter 

(B) Orifice plate 

(C) Pitot tube

(D) Rotameter 

Answer: Option C 

Question No. 290

A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena 

contracta. The coefficient of contraction is 

(A) 0.46 

(B) 0.64 

(C) 0.78 

(D) 0.87 

Answer: Option B 

Question No. 291

Buoyant force is 

(A) Resultant force acting on a floating body 

(B) Equal to the volume of liquid displaced 

(C) Force necessary to keep a body in equilibrium 

(D) The resultant force on a body due to the fluid surrounding it 

Answer: Option D 

Question No. 292

In case of flow through parallel pipes, 

(A) The head loss for all the pipes is same 

(B) The total discharge is equal to the sum of discharges in the various pipes 

(C) The total head loss is the sum of head losses in the various pipes 

(D) Both (A) and (B) 

Answer: Option D 

Question No. 293

Rotameter is a device used to measure 

(A) Absolute pressure 

(B) Velocity of fluid 

(C) Flow 

(D) Rotation 

Answer: Option C 

Question No. 294

In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of 

weir is __________ the head of water on the upstream side of weir. 

(A) Equal to 

(B) One-third 

(C) Two-third 

(D) Three-fourth 

Answer: Option C

Question No. 295

When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a 

point known as 

(A) Centre of pressure 

(B) Centre of gravity 

(C) Centre of buoyancy 

(D) Metacentre 

Answer: Option D 

Question No. 296

A nozzle is generally made of 

(A) Cylindrical shape 

(B) Convergent shape 

(C) Divergent shape 

(D) Convergent-divergent shape 

Answer: Option B 

Question No. 297

Pitot tube is used for measurement of 

(A) Pressure 

(B) Flow 

(C) Velocity 

(D) Discharge 

Answer: Option C 

Question No. 298

Coefficient of discharge Cd is equal to (where Cc

 = Coefficient of contraction, Cv = Coefficient of 

velocity, and Cr

 = Coefficient of resistance) 

(A) Cc × Cv

(B) Cc × Cr

(C) Cv × Cr

(D) Cc

/Cr Answer: Option A 

Question No. 299

The value of mass density in kg-sec-V-m⁴ for water at 0°C is

(A) 1 

(B) 1000 

(C) 100 

(D) 101.9 

Answer: Option D 

Question No. 300

The shear stress between the two liquid layers is __________ proportional to the distance between two layers.

(A) Directly 

(B) Inversely 

(C) Both A and B 

(D) None of these 

Answer: Option B