Presence of even very minute amount (say 0.1%) of ______________ in copper, reduces its electrical conductivity very seriously?

Related Mcqs:

Condenser tubes are not made of_________________?

A. Cartridge brass B. Muntz brass C. Wood metal D. Aluminium brass alloy...

Rotary kilns in cement industry are lined with _____________bricks?

A. Fireclay B. Silica C. Lead D. High alumina & high magnesia...

Which of the following is the hardest material ?

A. Topaz B. Quartz C. Corundum D. Fluorite...

Addition of nickel to copper improves its_________________?

A. Machinability B. Ductility C. Strength D. Hardness...

The softest material in Mho’s scale (for measuring hardness) is________________?

A. Talc B. Gypsum C. Rubber D. None of these...