Presence of even 0.005% of _____________ in copper makes it highly brittle, rendering it useless for wire-drawing?

Related Mcqs:

Evaporator used for concentrating tomato juice is made of __________________?

A. Nickel B. Brass C. Stainless steel-glass lined D. Cast iron-rubber lined...

When iron is rusted, it is__________________?

A. Converted to a fine powder B. Reduced C. Oxidised D. None of these...

Which of the following metals in not used for coating of the base metal to guard it against corrosion ?

A. Lead B. Cadmium C. Magnesium D. Aluminium...

Clock pendulums are usually made of _______________ steel?

A. High speed B. Stainless C. Heat resisting D. None of these...

Cold work tool steel should have_________________?

A. High toughness B. Poor hardenability C. High wear resistance D. All A., B. & C....