Platinum and silver are corroded by___________________?

Related Mcqs:

Balls in a ball mill are usually made of__________________?

A. Steel B. Cast iron C. Stainless steel D. Bronze...

Hot working of lead is carried out at_________________?

A. 75° C B. 373° K C. 150° C D. Room temperature...

Pick out the wrong statement?

A. Bronze is an alloy of copper & tin B. Brass is an alloy of copper & zinc C. The alloy named ‘German silver’ does not contain any silver D. The ability of a material to fracture without appreciable deformation is called its ductility...

Titanium metal_________________?

A. Exists in three allotropic forms B. Cannot be welded C. Is used in oceanographic and space exploration applications D. None of these...

H2SO4 (< 50% concentration) is corrosive to_________________?

A. Aluminium, mild steel, stainless steel, concrete & tin B. Copper, cast iron & high silicon iron (14% Si) C. Rubber (butyl and hard), silicone rubber & Teflon D. Glass, graphite, porcelain & stoneware...