| Direction: For the following questions. Choose the correct answer from the codes [a], [b], [c] and [d] defined as follows. |
| Statement I Borax bead test is not suitable for Al (lll). |
| Statement II\[A{{l}_{2}}{{O}_{3}}\] is insoluble in water. |
A) Statement I is true, Statement II is also true Statement II is a correct explanation of Statement I.
B) Statement I is true, Statement II is also true and Statement II is not a correct explanation of Statement I.
C) Statement I is true. Statement II is false.
D) Statement I is false. Statement II is true.
Correct Answer: B
Solution :
Borax bead test is used only to detect some colored ions like \[C{{u}^{2+}},\,\,N{{i}^{2+}},\,C{{o}^{2+}}\] and \[C{{r}^{3+}}\] whose salts react with boric anhydride to form metaborates having specific colours. \[A{{l}^{3+}}\] does not show any colour and is also insoluble in water.
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