Question

E is the element which reacts with oxygen to form an oxide E2O an aqueous solution of E2O turns red litmus blue so what is the nature of oxide E2O and write the name of element E

Answer 1

Basic and magnesium.

Answer 2

as E2O turns red litmus to blue, so it is basic in nature..
E is a metal.
example - sodium
Na forms Na2O and its aqueous solution gives NaOH which is basic in nature.
Na2O + H2O ---> 2NaOH.
hope it helps you..