Question

4.08 g of a mixture of BaO and unknown carbonate (MCO₃) was heated strongly. The residue 3.64 g was dissolved in 1000 mL of 1N HCl.

The excess acid required 16 mL of 2.5 N NaOH solution for complete neutralisation.

Which of the following is the metal M?

(A) K

(B) Na

(C) Ca

(D) Cu

Answer 1

The Metal M is Calcium (Ca).

So, The correct option is (C)