Cermets are used for making___________________?
A. Cutting tools
B. Abrasives
C. Both A. & B.
D. Neither A. nor B
Materials and Construction
_____________ is added in stainless steel to prevent inter crystal corrosion?
_____________ is added in stainless steel to prevent inter crystal corrosion?
A. Vanadium
B. Niobium
C. Chromium
D. Nickel
Hammers and railway rails are normally made of___________________?
Hammers and railway rails are normally made of___________________?
A. Mild steel
B. Dead mild steel
C. Medium carbon steel
D. High carbon steel
Slow and progressive deformation of a material with time under constant stress is called___________________?
Slow and progressive deformation of a material with time under constant stress is called___________________?
A. Creep
B. Erosion
C. Resilience
D. None of these
Lead alone is not used in storing equipment, because it________________?
Lead alone is not used in storing equipment, because it________________?
A. Is very costly
B. Corrodes easily
C. Is having low creep strength
D. None of these
Acetaldehyde is produced by hydration of acetylene in a sulphuric acid solution of mercuric sulphate. Hydration tower is made of___________________?
Acetaldehyde is produced by hydration of acetylene in a sulphuric acid solution of mercuric sulphate. Hydration tower is made of___________________?
A. Rubber lined mild steel
B. Lead lined mild steel
C. Aluminium
D. Cast iron
Cold worked steel parts are normally subjected to_________________?
Cold worked steel parts are normally subjected to_________________?
A. Normalising
B. Hardening
C. Annealing
D. Shot peening
Water gas generator is made of__________________?
Water gas generator is made of__________________?
A. Carbon steel-brick lined
B. Stainless steel-lead lined
C. Cast iron
D. High carbon steel-porcelain lined
To improve the machinability of steel, it is generally subjected to_______________?
To improve the machinability of steel, it is generally subjected to_______________?
A. Spheroidising
B. Tempering
C. Normalising
D. Annealing
Dilute sulphuric acid is transported in _____________ pipes?
Dilute sulphuric acid is transported in _____________ pipes?
A. Mild steel
B. Lead
C. Copper
D. Special alloys