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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Select the amphoteric substance in the following
  • A
    $SO_3$
  • ✓
    $NaOH$
  • C
    $CO_2$
  • D
    $Al(OH)_3$
✓

Answer

Correct option: B.
$NaOH$
b
$\begin{array}{ll} Al \rightarrow & 933\,K \\ Ga \rightarrow & 303\,K \\ In \rightarrow & 430\,K \\ Se \rightarrow & 490\,K \end{array}$

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