NCERT Exemplar XXIII — task. Science CBSE, Class 10.

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Multiple Choice Questions:

1. Arrange the following elements in the order of their decreasing metallic character Na, Si, Cl, Mg, Al.

Na > Al > Mg > Cl > Si
Al > Na > Si > Ca > Mn
Cl > Si > Al > Mg > Na
Na > Mg > Al > Si > Cl

2. What type of oxide would Eka-aluminium form?

\(E_3O_2\)
\(EO_3\)
\(E_2O_3\)
\(EO_2\)

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