Engineering Materials
Pig iron is the name given to

Iron in molten form in the ladles
Product of blast furnace made by reduction of iron ore
Iron containing huge quantities of carbon
Raw material for blast furnace

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
In a hardening process, the hypo-eutectoid steel is

Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air
Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium
Heated below or closes to the lower critical temperature and then cooled slowly
Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Cobalt in steel

Gives ductility, toughness, tensile strength and anti corrosion property
Improves wear resistance, cutting ability and toughness
Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties
Improves cutting ability and reduce hardenability

ANSWER DOWNLOAD EXAMIANS APP