1. The force necessary to pull a circular plate of 5cm radius from water surface for which surface tension is 7.5Ncm⁻¹ is.........

2. If the atmospheric pressure is about 1.0 × 10⁵Pa. How large a force does the still air in a room exert on the inside of a window pane that is 40cm x 80cm in dimension?

3. Water flowing with a velocity of 2ms⁻¹ in a pipe 4cm² in cross-section enters a short section of another new pipe 1cm² in area. What is the velocity in this new pipe?

4. How much heat is lost by a human body per day from evaporation if the average perspiration loss is 30g/hr and the heat of vaporization at body temperature is 540 Cal/g.

5. Using the description in question 4 above, find the Strain and Young modulus respectively.

6. A combination of liquid and gases which alter their shape in response to an applied force is known as .......

7. The aorta in human has a diameter of 3.6cm, while the average systolic blood velocity is 90cms⁻¹. Determine the Reynolds numbers if the coefficient of viscosity is 4.5x10⁻³kg/ms

8. If water flows out of a pipe at the rate of 3cm³s⁻¹. Find the velocity of the water at a point in the pipe where its diameter is 0.80cm.

9. A water tank has a rust hole on the side 3.5m below the water level. What is the velocity efflux of the water from this hole?

10. A metal wire 75.0cm long and 0.13cm in diameter stretches 0.035cm when a load of 8kg is hung on its end. Calculate the stress developed by the wire.

11. When the fluid velocity at a given location is independent of time, then the fluid is said to be in -------

12. The Spherical shape of the rain drop is due to ............

13. A flow is said to be incompressible if the fluid density is -------

14. What enables a teacher to write on the black board with chalk?

15. At which of the following temperatures would the value of surface tension of water be at minimum value?.

16. Water is flowing smoothly through a close-pipe system. At one point where the height of the pipe is 2m, the speed of the water is 3ms⁻¹ with pressure 20kPa, While at another point 'B' where the height of the pipe is 3m the speed is 4ms⁻¹, what is the pressure at this point 'B'?