Final answer:
The alloy from the given options that contains mercury is zinc amalgam (d). An amalgam is an alloy of mercury with other metals, and Zn amalgam specifically refers to a mix of zinc and mercury. The correct option is d).
Step-by-step explanation:
The question addresses which among the listed alloys contains Hg (mercury) as one of its constituents. An amalgam is defined as an alloy of mercury with one or more other metals. Going through the options:
- Stainless steel is an alloy mostly consisting of iron, carbon, and chromium.
- Solder is typically a mixture of tin and lead or a lead-free alternative that does not contain mercury.
- Brass is an alloy of copper and zinc.
- Zn amalgam is the correct answer as it contains zinc (Zn) and mercury (Hg).
Zinc amalgam is used for chemical reactions and dental materials, and is just one example of mercury's ability to form amalgams with other metals, apart from exceptions like iron, platinum, tungsten, and tantalum. Option d) is the correct one.