A. Descaling
B. Shot blasting
C. Pickling
D. Skimming
Related Mcqs:
- Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process ?
A. Galvanising
B. Tinning
C. Sherardizing
D. None of these - Removal of non-condensable from steam or other vapour is termed as the ________________ process?
A. Condensation
B. Deaeration
C. Scavenging
D. Exhaust - Steel containing low percentage of nickel, chromium & tungsten are termed as the _____________ steel ?
A. Wrought
B. Tool
C. Alloy
D. Plain carbon - The rolling process cannot be used to produce______________________?
A. Plates
B. Rods
C. Tubes
D. Wires - The boiling & freezing points on a newly defined temperature scale in degree ‘D’ are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to _____________ °D ?
A. 140
B. 180
C. 240
D. 280 - Transformation range for ferrous material is the temperature interval during which ___________________ is formed during its heating?
A. Cementite
B. Austenite
C. Martensite
D. Pearlite - Globular form of cementite is formed during the _________________ process ?
A. Spheroidising
B. Hardening
C. Annealing
D. Normalising - The ability of tool steel to resist softening at high temperatures is termed as __________________ hardness?
A. Red
B. Extended
C. Super
D. Extreme - In the acid Bessemer process, the hot metal should have the following composition ?
A. S < 0.05% and P < 0.05%
B. S < 0.05% and P < 1.5%
C. S 1.5%
D. S > 1.5% and P < 0.05% - Square steel key is normally strong in failure by shear & crushing. Keys are normally made of _______________ steel bars?
A. Hot rolled mild
B. Cold rolled mild
C. Forged
D. Machinable stainless
