22. A perfect gas
A.Has constant viscosity
B.None of the above.
C.Is incompressible
D.Is of theoretical interest

---

23. A fluid in equilibrium can't sustain
A.Tensile stress
B.Compressive stress
C.Shear stress
D.Bending stress

---

24. Viscosity of water in comparison to mercury is
A.Higher
B.Lower
C.Same
D.Higher/lower depending on temperature

---

25. The bulk modulus Of elasticity with increase in pressure
A.Increases
B.Decreases
C.Remains constant
D.Increases first upto certain limit and then decreases

---

26. 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

---

27. A balloon lifting in air follows the following principle
A.Law of gravitation
B.Archimedes principle
C.Principle of buoyancy
D.All of the above

---

28. The value of the coefficient of compressibility for water at ordinary 'pressure and temperature in kg/cm3 is equal to
A.1000
B.21000
C.2700
D.10000

---