MCQ
The correct stability order for the following species is


- A$(I) > (II) > (III) > (IV)$
- B$(II) > (III) > (IV) > (I)$
- ✓$(I) > (III) > (II) > (IV)$
- D$(III) > (IV) > (I) > (II)$

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| $S \,No.$ | Time $(s)$ | Total pressure $(atm)$ |
| $1$ | $0$ | $0.5$ |
| $2$ | $100$ | $0.6$ |
Calculate the rate constant
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 :
