Othmer chart is useful in estimating the heat of_______________?

Related Mcqs:

1. ‘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

2. _________________ chart is a graph related to Antoine equation ?

   A. Ostwald
   B. Cox
   C. Mollier’s
   D. Enthalpy-concentration

3. The heat evolved in the combustion of benzene is represented by the equation: C6H6 + 7.5 O2 = 6CO2 + 3H2O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C6H6 is burnt in an open container, will be _____________ kJ/kgmole?

   A. +816.15
   B. +1632.3
   C. -1632.3
   D. -2448.45

4. The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the___________________?

   A. Trouton’s rule
   B. Kopp’s rule
   C. Antoine equation
   D. Kistyakowsky equation

5. The heat of adsorption of a gas caused by Van der Waals forces of attraction and capillarity is equal to the heat of__________________?

   A. Normal condensation
   B. Wetting
   C. Sum of A. and B.
   D. Difference of A. and B.

6. Heat of neutralisation of HCl and NaOH is – 57.46 kJ/Kg mole. The heat of ionisation of water will be _____________ kJ/Kg mole?

   A. 57.46
   B. -57.46
   C. 114.92
   D. -28.73

7. Heat of transition is the heat evolved or absorbed, when a substance is converted from_________________?

   A. Vapor to liquid
   B. Vapor to solid
   C. Solid to liquid
   D. One allotropic form to another allotropic form

8. A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?

   A. 13728 J
   B. 19206 J
   C. 4576 J
   D. 12712 J

9. Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10-3 T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to – 100°C is ____________________?

   A. 10.73 kJ
   B. 16.15 kJ
   C. 18.11 kJ
   D. 18.33 kJ

10. “The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements.” This is the statement of___________________?

    A. Law of Petit and Dulong
    B. Kopp’s rule
    C. Nernst heat theorem
    D. Trouton’s rule