Engineering Materials Questions

• The fuel used in a blast furnace is
• During the operation of a bessemer converter, the white flame indicates that the silicon and managenese had burnt and carbon has started oxidising.
• The heat treatment process used for castings is
• The slag from the blast furnace
• The temperature point at which the change starts on heating the steel is called
• The limestone in the charge of a blast furnace decomposes to give lime and carbon dioxide. The lime thus obtained
• Which of the following statement is wrong?
• The portion of the blast furnace above its widest cross-section is called
• Face centred cubic space lattice is found in gamma-iron, aluminium, copper, lead, silver and nickel.
• The slow cooling of steel from the __________ results in a coarse grained structure.
• In corrosion resistant properties, bronzes are __________ to brasses.
• The malleability is the property of a material by virtue of which a material
• Brittle materials when subjected to tensile loads, snap off without giving any sensible elongation.
• The casting ability of aluminium increases when __________ is added to aluminium.
• The temperature in the upper part of the blast furnace (zone of reduction) is __________ that of the middle part.
• In acidic bessemer process, the furnace is lined with
• Silicon bronze contains
• In the middle part of the blast furnace (zone of absorption), the temperature is
• Which of the following is a point imperfection?
• The process in which carbon and nitrogen both are absorbed by the metal surface to get it hardened is known as