1.

Borax heat test is given by

Answer»

`Co^(2+)`
`Zn^(2+)`
`Cu^(2+)` ions
`NI^(2+)`

Solution :White salts or ions GIVING colourless HEATED do do not give borasx BEAD test ,Salts of `Cu^(2+),Cu^(2-)` and `Ni^(2+)` give borax bead test


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