Engineering Materials
Beryllium bronze contains

60% copper and 40% beryllium
99% copper and 1% beryllium
80% copper and 20% beryllium
97.75% copper and 2.25% beryllium

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Engineering Materials
In spheroidising process, the steel is

None of these
Heated up to the lower critical temperature and then cooled in still air
Heated below the lower critical temperature and then cooled slowly
Heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C

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Engineering Materials
Pick up wrong statement about wrought iron

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

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