Q. A metal $M$ readily forms its sulphate $MSO_{4}$ which is water soluble. It forms its oxide $MO$ which becomes inert on heating. It forms its insoluble hydroxide $M(OH)_{2}$ which is soluble in $NaOH$ solution. Then, $M$ is

A) $Be$
B) $Ba$
C) $Ca$
D) $Mg$
Explanation

The correct answer is Option A: $Be$.

A detailed explanation for this question is being prepared.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.