MCQ
Bromination of $(E)-2$ -butenedioic acid gives
- ✓$(2R, 3S)-2, 3$ -dibromosuccinic acid
- B$(2R, 3R)-2, 3$ -dibromosuccinic acid
- Ca mixture of $(2R, 3R)$ and $(2S, 3S)-2, 3$ -dibromosuccinic acid
- D$(2S, 3S)-2, 3$ -dibromosuccinic acid
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| List-$I$ Species | List-$II$ Electronic distribution |
| $(A)$ $\mathrm{Cr}^{+2}$ | $(I)$ $3 \mathrm{~d}^8$ |
| $(B)$ $\mathrm{Mn}^{+}$ | $(II)$ $3 \mathrm{~d}^3 4 \mathrm{~s}^1$ |
| $(C)$ $\mathrm{Ni}^{+2}$ | $(III)$ $3\mathrm{~d}^4$ |
| $(D)$ $\mathrm{V}^{+}$ | $(IV)$ $3 \mathrm{~d}^5 4 \mathrm{~s}^1$ |
Choose the correct answer from the options given below:
$(I)$ Ortho -nitrophenol
$(II)$ Para -nitrophenol
$(III)$ Meta- nitrophenol