Match items in column - I with the items of column – Class 12 Chemistry

Choose the Best Answer · Q15

Q. Match items in column - I with the items of column - II and assign the correct code. Column-I: A. Borazole B. Boric acid C. Quartz D. Borax Column-II: 1. B(OH)₃ 2. B₃N₃H₆ 3. Na₂[B₄O₅(OH)₄].8H₂O 4. SiO₂ A B C D

a) 2 1 4 3

b) 1 2 4 3

c) 1 2 4 3

d) None of these

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Step 1. A. Borazole is B₃N₃H₆ ('inorganic benzene', formed on strongly heating diborane's ammonia adduct, Section 2.2.6) — matches item 2.

Step 2. B. Boric acid is B(OH)₃ (Section 2.2.5) — matches item 1.

Step 3. C. Quartz is the three-dimensional (tecto) silicate SiO₂ (Section 2.3.9) — matches item 4.

Step 4. D. Borax is Na₂[B₄O₅(OH)₄].8H₂O, the tetranuclear-unit formula given for borax in Section 2.2.4 — matches item 3. …

Q.Match items in column - I with the items of column – II and assign the correct code.
Column-I: A. Borazole B. Boric acid C. Quartz D. Borax
Column-II: 1. B(OH)₃ 2. B₃N₃H₆ 3. Na₂[B₄O₅(OH)₄].8H₂O 4. SiO₂
A B C D