MCQ
Biuret test is not given by
- AProteins
- ✓Carbohydrates
- CPolypeptides
- DUrea
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$(i)\,\,(CH_3)_2CH-CH_2Br \xrightarrow{{{C_2}{H_5}OH}} (CH_3)_2CH-CH_2OC_2H_5 + HBr$
$(ii)\,\,(CH_3)_2CH-CH_2-Br \xrightarrow{{{C_2}{H_5}{O^- }}} (CH_3)_2CH-CH_2OC_2H_5 + Br^-$
The mechanisms of reaction $(i)$ and $(ii)$ are respectively
| Column $I$ | Column $II$ |
| $(A)$ $Image$ | $(p)$ Racemic mixture |
| $(B)$ $Image$ | $(q)$ Addition reaction |
| $(C)$ $Image$ | $(r)$ Substitution reaction |
| $(D)$ $Image$ | $(s)$ Coupling reaction |
| $(t)$ Carbocation intermediate |



$\text{CH}_3\text{CHO}\xrightarrow[(\text{ii})\ \text{H}_2\text{O}]{(\text{i})\text{CH}_3\text{MgBr}}\text{A}\xrightarrow{\text{H}_2\text{SO}_4.\triangle}\text{(B)}\xrightarrow{\text{Hydroboration oxidation}}\text{(C)}$