Related Questions

Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese.
A 1.5-2
B 3.5-4.5
C 7-9
D 12-14
Which one of the following States produces the maximum manganese in India?
A Madhya Pradesh
B Andhra Pradesh
C Uttar Pradesh
D Odisha
The system in which high tensile alloy steel bars (silica manganese steel) are used as pre-stressing tendons, is known as
A Freyssinet system
B Magnel-Blaton system
C C.C.L. standard system
D Lee-McCall system
Manganese is added in low carbon steel to
A Make the steel tougher and harder
B Raise the yield point
C Make the steel ductile and of good bending qualities
D All of the above
Presence of iron and manganese in water causes
A Reduction in its dissolved oxygen content
B Discoloration of bathroom fixtures
C Temporary hardness
D None of these
Manganese in steel affects its
A Ductility
B Tensile strength
C Hardness
D None of these
Iron and manganese present as pollutants in water cannot be removed by________
A Oxidation followed by settling and filtration
B Chlorination
C Ion exchange process
D Lime soda process or manganese zeolite process
Addition of manganese to aluminium results in
A Improvement of casting characteristics
B Improvement of corrosion resistance
C One of the best known age and precipitation hardening systems
D Improving machinability
Manganese in steel increases its
A Tensile strength
B Hardness
C Ductility
D Fluidity
In high speed steels, manganese is used to tougher the metal and to increase its
A Yield point
B Critical temperature
C Melting point
D Hardness

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