If steel is heated to a temperature well below red heat and is then cooled slowly,the process is called

$A$ chemistry student trying to detect the metallic ion in a salt,makes a paste on a clean platinum wire loop of the salt with concentrated $HCl$. When he takes a small amount of this paste and keeps it in a non-luminous Bunsen flame,the colour of the flame changes to grassy green. He should,therefore,conclude that the metal is

On performing a borax-bead test with a given inorganic mixture for qualitative analysis,the colour of the bead was found to be emerald green both in oxidising and reducing flame. It indicates the possibility of the presence of

What is a fusion mixture?

Which of the following salts does not give a borax bead test?

Which of the following salts is used in the bead test for the qualitative analysis of inorganic substances?