1(v)
Glucose reacts with concentrated sulphuric acid to give a very pure form of carbon called sugar charcoal.
The reaction taking place is:
- (a)oxidation
- (b)combustion
- (c)dehydration
- (d)combination
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dehydration
Reason — Concentrated sulphuric acid is a strong dehydrating agent due to its strong affinity for water, hence, the reaction taking place is a dehydration reaction.
C6H12O6 $\xrightarrow {\text{Conc. H}_2\text{SO}_4}$ 6C + 6H2O