Boiler tube size is specified by its thickness and _____________________ diameter ?
A. Outside
B. Inside
C. Mean
D. None of these
Chemical Engineering Basics
Dowtherm is a____________________?
Dowtherm is a____________________?
A. High temperature heating medium (a petroleum product)
B. Product of coal tar distillation
C. Very heat sensitive material
D. None of these
_______________ test can be termed as the semi-destructive test?
_______________ test can be termed as the semi-destructive test?
A. Impact
B. Torsion
C. Hardness
D. Charpy
Alloying elements present in Haynes stellite, which has superior performance than high speed steel, are____________________?
Alloying elements present in Haynes stellite, which has superior performance than high speed steel, are____________________?
A. Nickel, cobalt & chromium
B. Tungsten, chromium & cobalt
C. Manganese, chromium & cobalt
D. Tungsten, molybdenum & nickel
Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than ?
Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than ?
A. 5
B. 10
C. 20
D. 35
Addition of _______________ to steel does not help in improving its machinability ?
Addition of _______________ to steel does not help in improving its machinability ?
A. Sulphur
B. Silicon
C. Lead
D. Phosphorous
A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its_______________?
A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its_______________?
A. Aqueous tension
B. Saturated humidity
C. Vapor pressure
D. Absolute humidity
With increase in annealing temperature, the following defect density decreases?
With increase in annealing temperature, the following defect density decreases?
A. Vacancy
B. Dislocation
C. Grain boundary
D. All of these
The leaching solvent used in Baeyer’s process for the purification of bauxite is___________________?
The leaching solvent used in Baeyer’s process for the purification of bauxite is___________________?
A. Ammonium hydroxide
B. Sodium carbonate
C. Sodium hydroxide
D. Ammonium carbonate
Boiling point of water gets lowered at high altitudes (e.g., hills), because ___________________?
Boiling point of water gets lowered at high altitudes (e.g., hills), because ___________________?
A. Temperature is low
B. Atmospheric pressure is low
C. Atmospheric pressure is high
D. None of these