A. Work is done
B. Heat transfer takes place
C. Mass flow occurs across the boundary of the system
D. No chemical reaction takes place within the system
A. CaF2
B. Ca3(PO4)2
C. CaCO3
D. CaCl2
A. Molybdenum
B. Chromium
C. Tungsten
D. Vanadium
A. Providing support for the tubes
B. Improving heat transfer
C. Both A & B
D. Preventing the fouling of tubes & stagnation of shell side fluid
A. Waiting
B. Idle
C. Inspection
D. Tool replacement
A. Malleable
B. Nodular
C. Ductile
D. Grey
A. Increase
B. Decrease
C. Remain same
D. May increase or decrease; depending on the type of metal
A. Increases the reducing potential of the gas
B. Increases the flame temperature
C. No significant change occurs
D. Increases the hydrogen content in the metal
A. Wrought iron
B. Pig iron
C. Cast iron
D. None of these
A. 768
B. 1127
C. 1359
D. 1480