Category: Chemical Engineering Basics

A. Water passes through tubes and flue gases around it
B. Tube carrying hot flue gases are immersed in a pool of water
C. Tubes are placed in vertical position
D. None of these
Answer: Option A

A. Sensible heat carried away by the flue gases
B. Heat carried away by the steam from the moisture content of the fuel
C. Heat lost by radiation
D. Heat carried away by steam from the combustion of hydrogen in the fuel

A. 0
B. 1
C. ∞
D. None of these

A. 0.001
B. 0.01
C. 0.002
D. 0.02

A. 75°C
B. 373°K
C. 150°C
D. Room temperature

A. Sulphur
B. Silicon
C. Lead
D. Phosphorous

A. Strain rate is increased
B. Grain size is increased
C. Prior cold deformation is increased
D. Not affected by any of the above parameters

A. Higher, as it gives higher wavelength
B. Lower, as it gives higher wavelength
C. Higher, as it gives shorter wavelength
D. Lower, as it gives shorter wavelength

A. Evaporative capacity
B. Evaporation efficiency
C. Thermal efficiency
D. Steam load

A. Lead can creep under its own weight at room temperature
B. The electrical conductivity of gold is considerably reduced by alloying additions due to the
decrease in electron movement
C. Recrystallisation temperature decreases with decrease in strain in a cold worked metal
D. With increase in temperature, the electrical conductivity of intrinsic semi-conductor will