Pick out the wrong unit conversion of heat transfer co-efficient?

Related Mcqs:

1. Pick out the wrong unit conversion of mass transfer co-efficient?

   A. 1 lb/hr.ft3.atm. = 4.8182 kg/hr.m2.bar
   B. 1 kg/hr.m2.atm= 0.98687 kg/hr. m .bar
   C. 1 lb/hr.ft2 = 4.8823 kg/hr.m2
   D. 1 kg/hr.m2 = 4.8823 lb/hr.ft2

2. Pick out the wrong unit conversion of heat transfer rate?

   A. 1 kcal/hr= 1.163 Watt
   B. 1 Watt = 1.163 kcal/hr
   C. 1 BTU/ft2.hr = 2.712 kcal/m2.hr
   D. 1 kcal/m2.hr = 0.3687 BTU/ft2.hr = 1.163 Watt/m2

3. Pick out the wrong unit conversion of temperature?

   A. °R = 273 + °F
   B. Temperature difference of 1°K = 1°C = 9/5°F
   C. °C = (F- 32) × 0.555
   D. °F = (°C + 17.778) × 1.8

4. Pick out the wrong unit conversion of thermal conductivity ?

   A. 1 BTU/ft2.hr.°F/ft = 1.488 kcal/m2. hr.°C/m
   B. 1 BTU/ft2.hr.°F/inch = 1.488 kcal/m2. hr.°C/m
   C. 1 kcal/m.hr.°C = 0.672 BTU/ft.hr.°F = 1.163 W/m. °K
   D. 1 W/cm.°C = 85.985 kcal/m.hr.°C = 57.779 BTU/ft.hr.°F

5. Pick out the wrong unit conversion of calorific value?

   A. 1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg
   B. 1 BTU/ft3 = 8.9 kcal/m3 = 0.038 MJ/m3
   C. 1 BTU/lb = 2.3 kcal/kg
   D. 1 kcal/m3 = 0.1124 BTU/ft3

6. In case of a ternary system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the______________?

   A. Solute concentration
   B. Temperature
   C. Both A. & B.
   D. Neither A. nor B.

7. The unit of specific heat at constant pressure, Cp, in SI unit is__________________?

   A. W/m2°C
   B. J/kg°K
   C. W/m°K
   D. J/m3°K

8. Pick out the correct conversion?

   A. 1 BTU =453.6 calories
   B. 1 BTU = 252 calories
   C. 1 calorie = 252 BTU
   D. 1 calorie = 453.6 BTU

9. Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m3. The diffusivity of aniline in air is 0.74 × 10-5m2/s. The numerical value of mass transfer co-efficient is 7.4 × 10-3. Its units are_______________________?

   A. m/s
   B. cm/s
   C. mole/m2.s.Pa
   D. k.mole/m2.s.Pa

10. Pick out the wrong statement?

    A. Atomic heat capacities of the crystalline solid elements are nearly constant and equal to 6.2 kcal/kg-atom according to the law of Petit and Dulong
    B. Atomic heat capacities of all solid elements decrease greatly with decrease in temperature, approaching a value of zero at absolute zero temperature, when in the crystalline state
    C. Generally, the heat capacities of compounds are lower in the liquid than in the solid state
    D. The heat capacity of a heterogeneous mixture is an additive property, but when solutions are formed, this additive property may no longer exist