Which of the following always contains mercury as one of the constituents? |
|||
(a) |
Stainless steel |
(b) |
Solder |
(c) |
Duralumin |
(d) |
Zinc amalgam |
Which of the following always contains mercury as one of the constituents? |
|||
(a) |
Stainless steel |
(b) |
Solder |
(c) |
Duralumin |
(d) |
Zinc amalgam |