HCL vs Aluminum Makes Blue Flames #shorts #bluebox

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

A gas which burns with blue flame is

The flame of candle or kerosene stove is sometimes yellow and sometimes blue. What do these colours indicate ?

A solution makes red litmus blue. The pH of the solution is