1.

The order in which the following oxides are arranged according to decreasing basic nature is [CPMT 1985]

A. \[N{{a}_{2}}O,\,MgO,\,A{{l}_{2}}{{O}_{3}},\,CuO\]
B. \[MgO,\,A{{l}_{2}}{{O}_{3}},\,CuO,\,N{{a}_{2}}O\]
C. \[A{{l}_{2}}{{O}_{3}},\,MgO,\,CuO,\,N{{a}_{2}}O\]
D. \[CuO,\,N{{a}_{2}}O,\,MgO,\,A{{l}_{2}}{{O}_{3}}\]
Answer» B. \[MgO,\,A{{l}_{2}}{{O}_{3}},\,CuO,\,N{{a}_{2}}O\]


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