Question

Ferrous salt does not give borax bead test

Answer 1

Ferrous salt does not give borax bead test

• Sodium ions are not coloured.  
• Therefore, they do not give a borax bead test.  
• This borax bead test is given by coloured salts.
• Since the borax test is used for transition element detection, and as the sodium is not a transition element, ferrous salt does not give borax bead test.

Answer 2

Ferrous salt does not give a borax test as sodium ions are not coloured.

• Borax bead test is the qualitative inorganic analysis used for the detection of transition metals.
• Borax when heated with salts of transition metals, yields salt of certain colours.
• For example, When copper sulphate heats borax a blue copper metaborate salt is formed.
• As sodium ions are not coloured, hence they does not give a borax bead test.