NTSE Stage 2 SAT 2016 Question Paper

An element X reacts with dilute ${\mathrm{H}}_2{\mathrm{SO}}_4$ as well as with NaOH to produce salt and ${\mathrm{H}}_2$ (g) . Hence, it may be concluded that :
I. X is an electropositive element.
II. oxide of X is basic in nature.
III. oxide of X is acidic in nature. IV. X is an electronegative element.