Blast furnace slag is mainly molten_________________?
A. Sand
B. Magnesium silicate
C. Calcium silicate
D. Iron pyrite
Chemical Engineering Basics
Ammonia leakage in the refrigeration system is detected by_________________?
Ammonia leakage in the refrigeration system is detected by_________________?
A. Sulphur stick, which on detection gives white smoke
B. Using chemical reagents
C. Its smell
D. Soap solution
Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?
Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?
A. Emissivity of pipe surface
B. Diameter & length of the pipe
C. Temperature of hot pipe surface & that of air in the room
D. None of these
Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of ?
Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of ?
A. Grashoff number
B. Grashoff number & Reynolds number
C. Reynolds number
D. Grashoff number & Prandtl number
Cast iron contains ____________________ percent carbon?
Cast iron contains ____________________ percent carbon?
A. 2.5
B. 3.75
C. 4.75
D. 5.25
Wrought iron is not____________________?
Wrought iron is not____________________?
A. Ductile & resistant to corrosion/rusting
B. Weldable easily
C. Having uniform strength in all directions
D. Having maximum tensile strength along the lines of slag distribution
With increase in steam pressure, its specific volume decreases ____________________?
With increase in steam pressure, its specific volume decreases ____________________?
A. Rapidly first and then slowly
B. Linearly
C. Slowly first and then rapidly
D. Exponentially
Powder metallurgy process does not make metal powder by_________________________?
Powder metallurgy process does not make metal powder by_________________________?
A. Atomisation
B. Grinding/milling
C. Hammering
D. Electrolytic deposition
Vernier calipers cannot be used to measure the______________________?
Vernier calipers cannot be used to measure the______________________?
A. I.D. & O.D. of the shaft
B. Thickness of parts
C. Depth of holes
D. Clearance between two mating surfaces
What is the value of entropy at 273°K ?
What is the value of entropy at 273°K ?
A. 0
B. 1
C. ∞
D. None of these