Engineering Materials
The temperature required for full annealing in hypereutectoid steel is

30° C to 50° C below lower critical temperature
30° C to 50° C below upper critical temperature
30° C to 50° C above lower critical temperature
30° C to 50° C above upper critical temperature

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Engineering Materials
The charge of the blast furnace consists of

Calcined ore (8 parts), coke (4 parts) and limestone (1 part)
Calcined ore (4 parts), coke (1 part) and limestone (8 parts)
Calcined ore (1 part), coke (8 parts) and limestone (4 parts)
Calcined ore, coke and limestone all in equal parts

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Engineering Materials
Pick up wrong statement about wrought iron

It is very soft and ductile
It is made by adding suitable percentage of carbon to molten iron and subjecting the product to repeated hammering and rolling
It contains carbon of the order of 0 to 0.25%
It melts at 1535°C

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