Pick out the correct conversion?

Related Mcqs:

1. 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

2. 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

3. 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

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

   A. 1 kcal/m2.hr.°C = 0.2048 BTU/ft2.hr. °F. = 1.163 W/m2.°K
   B. 1 kcal/m2.hr.°K = 1.163 W/m2.°C
   C. 1 W/m2.°C = 0.1761 BTU/ft2.hr.°F.
   D. 1 BTU/ft2.hr.°F = 4.88 kcal/m2.hr.°C = 20.44 kJ/m2.hr°C = 5.678 W/m2.°C

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. 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

7. Pick out the wrong statement?

   A. Insulating refractories used in place of regular refractory bricks are usually called light weight refractories, and they have similar composition as heavy bricks
   B. Graphite refractories are also called plumbago refractories
   C. Superduty fireclay bricks correspond to a pyrometric cone equivalent of 26-28
   D. Calcined magnesite is also called dead burnt magnesite

8. 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

9. Pick out the wrong statement?

   A. Clausius-Clapeyron equation relates the latent heat of vaporisation to the slope of the vapor pressure curve
   B. At the boiling point of liquid at the prevailing total pressure, saturated absolute humidity is infinite
   C. Percentage saturation and relative saturation are numerically equal for an unsaturated vapor gas mixture
   D. Clapeyron equation is given by dP/dT = (λ/T) (VG – VL); where, P = vapor pressure, T = absolute temperature, λ = latent heat of vaporisation, VG and VL = volumes of gas and liquid respectively

10. Pick out the wrong statement ?

    A. ‘Reduced temperature’ of a substance is the ratio of its existing temperature to its critical temperature, both expressed on Celsius scale
    B. ‘Reduced pressure’ is the ratio of the existing pressure of a substance to its critical pressure
    C. ‘Reduced volume’ is the ratio of the existing molal volume of a substance to its critical molal volume
    D. None of these