Which of the following is an ore of mercury metal? (a) rock salt (b) cinnabar (c) duralumin (d) zinc amalgam
Correct answer is option b.
The formula of cinnabar is HgS. Thus, cinnabar is an ore of mercury.
Which of the following alloys contains mercury as one of the constituents? (a) stainless steel (b) solder (c) duralumin (d) zinc amalgam
Rock salt is an ore of one of the following metals. This metal is: (a) Mn (b) Na (c) Fe (d) Cu