Chemical Engineering Basics
Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are

Molybdenun, tungsten & chromium
Cobalt, chromium & tungsten
Cobalt, chromium & nickel
Cobalt, zirconium & molybdenum

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Chemical Engineering Basics
Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type

Counter flow with unequal heat capacities
Parallel flow with unequal heat capacities
Counter flow with equal heat capacities
Parallel flow with equal heat capacities

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