Which oxide is alkaline [MP PET 1990]

1.	Which oxide is alkaline [MP PET 1990]
A.	\[{{P}_{2}}{{O}_{3}}\]
B.	\[B{{i}_{2}}{{O}_{3}}\]
C.	\[A{{s}_{2}}{{O}_{3}}\]
D.	\[{{B}_{2}}{{O}_{3}}\]
Answer» C. \[A{{s}_{2}}{{O}_{3}}\]

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Which oxide is alkaline [MP PET 1990]

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