Q1. The bulk modulus of elasticity with increase in pressure
(A) increases
(B) decreases
(C) remains constant
(D) increases first up to certain limit and then decreases

Q2. Viscosity of water in comparison to mercury is
(A) higher
(B) lower
(C) same
(D) higher/lower depending on temperature

Q3. A fluid in equilibrium can’t sustain
(A) tensile stress
(B) compressive stress
(C) shear stress
(D) bending stress

Q4. For very great pressures, viscosity of moss gases and liquids
(A) remains same
(B) increases
(C) decreases
(D) shows erratic behaviour

Q5. A perfect gas
(A) has constant viscosity
(B) has zero viscosity
(C) is in compressible
(D) None of these

Q6. The surface tension of mercury at normal temperature compared to that of water is
(A) more
(B) less
(C) same
(D) more or less depending on size of glass tube

Q7. The tendency of a liquid surface to contract is due to the following property
(A) cohesion
(B) adhesion
(C) viscosity
(D) surface tension

Q8. The pressure at a point in a fluid will not be same in all the directions when the fluid is
(A) moving
(B) viscous
(C) viscous and static
(D) viscous and moving

Q9. The normal stress in a fluid will be constant in all directions at a point only if
(A) it is incompressible
(B) it has uniform viscosity
(C) it is frictionless
(D) it is at rest

Q10. Which of the following is demensionless
(A) specific weight
(B) specific volume
(C) specific speed
(D) specific gravity

Q11. When the flow parameters at any given instant remain same at every point, then flow is said to be
(A) quasi static
(B) steady state
(C) laminar
(D) uniform

Q12. The specific weight of water is 1000 kg/m”
(A) at normal pressure of 760 mm
(B) at 4°C temperature
(C) at mean sea level
(D) All of these

Q13. 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

Q14. The property of a fluid which enables it to resist tensile stress is known as
(A) compressibility
(B) surface tension
(C) cohesion
(D) adhesion

Q15. Mercury does not wet glass. This is due to property of liquid known as
(A) adhesion
(B) cohesion
(C) surface tension
(D) viscosity

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