MCQ
Which will not give purple colour with ninhydrin
- AAlanine
- BGlycine
- ✓Proline
- DGlutamic acid
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Reason : Osmotic pressure is a colligative property.
Statement $(I)$ : $\mathrm{S}_{\mathrm{N}} 2$ reactions are 'stereospecific', indicating that they result in the formation only one stereo-isomers as the product.
Statement $(II)$ : $\mathrm{S}_N 1$ reactions generally result in formation of product as racemic mixtures. In the light of the above statements, choose the correct answer from the options given below :