Normal temperature and pressure (N.T.P.) corresponds to ___________________?

Related Mcqs:

1. Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is ___________________?

   A. 0
   B. ∞
   C. +ve
   D. -ve

2. Trouton’s ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K) ___________________?

   A. λb/Tb
   B. Tb/λb
   C. √(λb/Tb)
   D. √(Tb/λb)

3. The vapour pressure of water is given by, in Psat = A – (5000/T), where A is a constant, Psat is the vapour pressure in atm. and T is the temperature in K. The vapor pressure of water in atm. at 50°C is approximately__________________?

   A. 0.07
   B. 0.09
   C. 0.11
   D. 0.13

4. Atmospheric pressure corresponds to a hydrostatic head of_________________?

   A. 13.6 cms of Hg
   B. 34 ft ofH2O
   C. 1 metre of H2O
   D. 13.6 metres of Hg

5. Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a _____________ vapour?

   A. Superheated
   B. Desuperheated
   C. Non-condensable
   D. None of these

6. Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and temperature ____________ as its mole fraction increases?

   A. Decreases
   B. Decreases exponentially
   C. Increases
   D. Remain constant

7. A liquid under pressure greater than its vapour pressure for the temperature involved is called a _____________ liquid?

   A. Sub-cooled
   B. Saturated
   C. Non-solidifiable
   D. None of these

8. A gas can be liquefied by pressure alone only, when its temperature is _____________ its critical temperature?

   A. Less than
   B. More than
   C. Equal to or higher than
   D. Less than or equal to

9. Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ______________ with the increase of reduced temperature?

   A. Decreases
   B. Increases
   C. Remains constant
   D. Decreases logarithmically

10. The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the ____________ temperature?

    A. Critical
    B. Boyle
    C. Inversion
    D. Reduced