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Question
Match the species given in Column I with properties given in Column II.
| Column I | Column II |
| (i) Diborane | (a) Used as a flux for soldering metals |
| (ii) Galluim | (b) Crystalline form of silica |
| (iii) Borax | (c) Banana bonds |
| (iv) Aluminosilicate | (d) Low melting, high boiling, useful for measuring high temperatures |
| (v) Quartz | (e) Used as catalyst in petrochemical industries |
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Solution
| Column I | Column II |
| (i) Diborane | (a) Used as a flux for soldering metals |
| (ii) Galluim | (b) Crystalline form of silica |
| (iii) Borax | (c) Banana bonds |
| (iv) Aluminosilicate | (d) Low melting, high boiling, useful for measuring high temperatures |
| (v) Quartz | (e) Used as catalyst in petrochemical industries |
Explanation:
(i) BH3 is unstable, forms diborane B2H6 by 3 centre –2 electron bonds, shows banana bonds.
(ii) Gallium with low melting point and high boiling point makes it useful to measure high temperatures.
(iii) Borax is used as a flux for soldering metals.
(iv) Aluminosilicate is used as catalyst in petrochemical industries.
(v) Quartz is a crystalline form of silica.
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