Question

Match the statement in Column I with statements in Column II

Answer 1

(A) STATEMENT: The reaction of oxalic acid with acidified $KMn{O}_4$ is first slow and then speeds up by itself. This is because one of the products of the reaction acts as a catalyst.
REASON: $KMn{O}_4$ decomposes into $Mn{O}_2$ in sunlight.
(2) If both statement and reason are true and reason is not correct explanation of statement.
(B) STATEMENT: Anhydrous. $ZnC{l}_2$ can't be made by heating $ZnC{l}_2\cdot 2H_{2}O$.
REASON: It undergoes hydrolysis to produce $Zn(OH{)}_2$ and $HCl$.
(1) If both statement and reason are true and reason is correct explanation of statement
(C) STATEMENT: $KMn{O}_4$ is not used as a primary standard substance. Before titration, $KMn{O}_4$ is standardized by titration with appropriate primary standard.
REASON: It is deliquescent in nature.
(3) If statement is correct and reason is incorrect.
(D) STATEMENT: $K_{2}C{r}_2{O}_7$ has orange colour due to charge transfer.
REASON: In dichromate ion all Cr−O bonds are not identical. The Cr-O bonds of Cr-O-Cr bridge have different bond length than other Cr-O bonds due to difference in the bond order.
(4) If both statement and reason are incorrect.