Question
Borax bead test is given by(1) $\mathrm{Co}^{2+}$(2) $\mathrm{Zn}^{2+}$(3) $\mathrm{Cu}^{2+}$(4) $\mathrm{Ni}^{2+}$
Step 1
The test involves heating a sample with a small amount of borax on a loop of platinum wire and then observing the color of the bead when it is hot and when it is cool. Show more…
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(A) Borax bead test is used to detect the cations like $\mathrm{Cu}^{2+}$, $\mathrm{Cr}^{3+}, \mathrm{Fe}^{3+}, \mathrm{Mn}^{2+}, \mathrm{Ni}^{2+}$ and $\mathrm{Co}^{2+}$ (R) The cations like $\mathrm{Cu}^{2+}, \mathrm{Cr}^{3+}, \mathrm{Fe}^{3+}$, etc., form coloured metaborates.
Borax bead test is not given by $\mathrm{a} / \mathrm{an}$ (1) aluminium salt (2) cobalt salt (3) copper salt (4) nickel salt
Borax bead test depends on the formation of (1) $\mathrm{B}_{2} \mathrm{O}_{3}$ (2) clemental boron (3) metal boride (4) metal metaborate
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