A solution of sodium salt of unknown anion when treated with Magnesium chloride solution gives white precipitate only on boiling. The anion is

A solution of sodium salt of unknown anion when treated with Magnesium

1.	A solution of sodium salt of unknown anion when treated with Magnesium chloride solution gives white precipitate only on boiling. The anion is
Answer» <html><body><p>`SO_(4)^(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>-)`<br/>`HCO_(3)^(-)`<br/>`CO_(3)^(2-)`<br/>`NO_(3)^(-)`.</p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/bicarbonates-896608" style="font-weight:bold;" target="_blank" title="Click to know more about BICARBONATES">BICARBONATES</a> on heating form insoluble carbonates<br/> `MgCl_(2) + 2NaHCO_(3)rarr2NaCl+Mg (HCO_(3))_(2)`<br/>`Mg(HCO_(3))_(2)overset(Delta)rarrMgCO_(3)darr+CO_(2)+H_(2)O`</body></html>