MCQ
Correct order of basicity is


- A$3 > 1 > 2 > 4$
- B$3 < 1 < 2 < 4$
- C$3 < 4 < 1 < 2$
- ✓$3 > 4 > 1 > 2$

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$A + O_2 \to B$
$B + O_2+ H_2O \to C$
$A,\, B$ and $C$ are
| List$-I$ | List$-II$ |
| $A$ Coke | $I$ Carbon atoms are $sp ^3$ hybridised |
| $B$ Diamond | $II$ Used as a dry lubricant |
| $C$ Fullerene | $III$ Used as a reducing agent |
| $D$ Graphite | $IV$ Cage like molecules |
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