The metal which gives brick red colour in flame test is

The metal which imparts Brick red colour to flame is

A solid is a compound of group I element and it gives a bright red colour in the flame test. The solid is

The pair of metals which do not impart colour in flame test is

The pair of metals which do not impart colour in flame test is

Which imparts brick red colour to the flame ?

Which imparts brick red colour to the flame ?