Question
- Write the structural difference between starch and cellulose.
- What type of linkage is present in Nucleic acids?
- Give one example each for fibrous protein and globular protein.
Cellulose–polymer of $\beta - \text{D} - $glucose units/polymer of $\beta-\text{glucose}$ units.
Globular protein-haemoglobin/insulin.
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| Column I | | Column II | |
| (i) | Antifreeze used in car engine | (a) | Neutral ferric chloride |
| (ii) | Solvent used in perfumes | (b) | Glycerol |
| (iii) | Starting material for picric acid | (c) | Methanol |
| (iv) | Wood spirit | (d) | Phenol |
| (v) | Reagent used for detection of phenolic group | (e) | Ethleneglycol |
| (vi) | By product of soap industry used in cosmetics | (f) | Ethanol. |

| Experiment | [A]/mol L-1 | [B]/mol L-1 | Initial rate of formation of D/mol L-1 min-1 |
| I | 0.1 | 0.1 | 6.0 × 10-3 |
| II | 0.3 | 0.2 | 7.2 × 10-2 |
| III | 0.3 | 0.4 | 2.88 × 10-1 |
| IV | 0.4 | 0.1 | 2.40 × 10-2 |