Which of the following is a commonly used manometric liquid for low pressure range ?

Related Mcqs:

1. Use of water as a manometric liquid suffers from the disadvantage of its____________________?

   A. Low vapour pressure
   B. Corrosive nature
   C. High vapour pressure
   D. High boiling point

2. Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?

   A. °C
   B. °F
   C. °K
   D. °R

3. Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at________________?

   A. High vacuum
   B. Zero pressure
   C. 0°K
   D. Earth’s centre

4. The pressure outside a bubble/droplet of liquid is ________________ the internal pressure?

   A. Greater than
   B. Less than
   C. Equal to
   D. Unpredictable; depends on the bubble size

5. ‘Cryogenics’ is concerned with the generation & use of low temperature in the range of____________________?

   A. 0°K to 123°K
   B. 0°C to – 123°C
   C. 0°C to – 273°C
   D. 0°K to 273°K

6. An example of unsteady non uniform flow is the flow of liquid under pressure through a__________________?

   A. Tapering pipe at constant flow rate
   B. Tapering pipe at either decreasing or increasing flow rate
   C. Long pipeline of constant diameter
   D. None of these

7. Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner ?

   A. Output & fineness
   B. Velocity
   C. Both A. & B.
   D. None of these

8. A high pressure boiler generates steam at a pressure greater than _____________________ kg/cm2 ?

   A. 10
   B. 30
   C. 50
   D. 80

9. Gage pressure within a spherical droplet of a fluid is ‘p’. What will be gage pressure within a bubble of the same size & of the same fluid ?

   A. p
   B. 2 p
   C. 0.5 p
   D. 0.25 p

10. Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which _____________ with increase in the pressure of steam?

    A. Decreases
    B. Increases
    C. Remain same
    D. May increase or decrease