Which of the following represents the allotropic forms of iron__________________?

Related Mcqs:

For the allotropic forms of iron, the points of arrest are __________________?

A. the points where no further change oc-curs B. constant for all metals C. the points where there is no further flow of metal D. the points of discontinuity E. the points where major changes take place...

Process of austempering results in__________________?

A. formation of bainite structure B. carburised structure C. martenistic structure D. lamellar layers of carbide distributed throughout the structure E. relieving of stresses throughout a component...

The metallic structure of mild steel is_________________?

A. body centred cubic B. face centred cubic C. hexagonal close packed D. cubic structure E. orthorhombic crystal...

Tungsten in steel________________?

A. improves wear resistance, cutting ability and toughness B. refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties C. improves cutting ability and reduces hardenability D. gives ductility, toughness, tensile strength and anticorrosion properties E. raises its melting point...

The correct sequence for descending order of machinability is _____________________?

A. grey cast iron, low carbon steel, wrought iron B. low carbon steel, grey cast iron, wrought iron C. wrought iron,low carbon steel, grey cast iron D. wrought iron, grey cast iron, low carbon steel E. grey cast iron, wrought iron, low carbon steel...