1 torr is equal to ______________ mm Hg column?

Related Mcqs:

1. 1 torr is equivalent to_________________?

   A. 1 mm Hg
   B. 1 Pascal
   C. 1 atm
   D. 1 mm wc

2. 1 kg/m2 is equal to ______________ mm water column?

   A. 1
   B. 10
   C. 100
   D. 1000

3. Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the ‘corresponding states’. At equal reduced conditions i.e., at the corresponding state, the ____________ of different gases are nearly the same?

   A. Compressibility
   B. Molecular weight
   C. Humidity
   D. None of these

4. One Newton is equal to ______________ dynes?

   A. 102
   B. 103
   C. 104
   D. 105

5. Internal energy is equal to the heat absorbed in case of a/an ______________ process?

   A. Constant volume
   B. Polytropic
   C. Adiabatic
   D. Constant pressure

6. ‘Cox’ chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the_____________?

   A. Temperature vs. log (vapor pressure)
   B. Vapor pressure vs. log (temperature)
   C. Log (temperature) vs. log (vapor pressure)

   D. Vapor pressure vs. temperature

7. Refluxing of part of the distillate in a fractionating column is a ‘recycling operation’, aimed primarily at_______________?

   A. Heat conservation
   B. Yield enhancement
   C. Product enrichment
   D. None of these

8. 1m3 is approximately equal to_________________?

   A. 28 litres
   B. 35 ft3
   C. 4.5 litres
   D. 4.5 ft3

9. A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are Xc and Xs respectively. Which of the following statement is correct ?

   A. Xc > Xs
   B. Xc = Xs
   C. Xc < Xs
   D. Xc greater/less than Xs depending on the length of the cylinder

10. If the partial pressure of the solvent in the vapor phase is equal to the vapor pressure of the solvent at that temperature, then the system is said to be at its___________________?

    A. Bubble point
    B. Saturation temperature
    C. Dew point
    D. Both B. and C.