Question:
The set in which compounds have different nature is :
Correct Option: , 2
Solution:
1) $\mathrm{B}(\mathrm{OH})_{3}$ acidic and $\mathrm{H}_{3} \mathrm{PO}_{3}$ acidic
2) $\mathrm{B}(\mathrm{OH})_{3}$ acidic and $\mathrm{Al}(\mathrm{OH})_{3}$ amphoteric
3) $\mathrm{NaOH}$ basic and $\mathrm{Ca}(\mathrm{OH})_{2}$ basic
4) $\mathrm{Be}(\mathrm{OH})_{2}$ amphoteric and $\mathrm{Al}(\mathrm{OH})_{3}$ amphoteric
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