Gold is not a very reactive metal and muriatic acid would not have much effect on it, you probably need to Polish the scratches out if it looks dirty. or you need to check if it is real gold.
Yes
No, muriatic acid cannot be used to smelt gold. Muriatic acid is a strong acid that is commonly used for cleaning and etching metals, but it is not suitable for smelting gold. Smelting gold involves high temperatures to separate the metal from impurities, a process that muriatic acid is not capable of performing.
NO!
Muriatic acid can be used to clean dishwashers. Muriatic acid is very strong and should only be used occasionally for cleaning the dishwasher.
Give it a week, and make sure you dilute the muriatic acid.
Yes, muriatic acid can be used to clean old tubs. It is a strong acid that can help remove mineral deposits, soap scum, and grime from the surface of the tub. However, it is important to use it with caution as it can be harsh and may require proper ventilation and protective gear.
You can use muriatic acid to clean or etch aluminum. Do not let it set too long or it will eat through. Use caution since muriatic acid is very caustic.
no
YES
To clean concrete among other uses
I would not recommend using Muriatic Acid. It is far to strong for this use. Purchase a good industrial carburetor cleaner.
Muriatic acid is highly corrosive to certain metals. Would not be recommended for cabinet hardware cleaning, for sure.