X is a substance which liberates CO\(_2\) on treatment with concentrated H\(_2\)SO\(_4\). A warm solution of X can decolorize acidified KMnO\(_4\). X is

  • A HCOOH
  • B NaHCO\(_3\)
  • C FeCO\(_3\)
  • D H\(_2\)C\(_2\)O\(_4\)
jamb 2019chemistry

The correct answer is D. H\(_2\)C\(_2\)O\(_4\)

It should be noted that for X to liberate CO\(_2\), X must be a carbonate or an oxalate. Since X decolorizes KMnO\(_4\), X must be an oxalate. 

Therefore, X is H\(_2\)C\(_2\)O\(_4\).

Previous question Next question