Step 1: Concept of unrecorded liabilities.
During dissolution, sometimes a liability may not have been recorded earlier. When the firm pays such liabilities, it is treated as an expense of dissolution.
Step 2: Treatment in Realisation A/c.
- Debit side of Realisation A/c = expenses, payments, and settlement of liabilities.
- Credit side = proceeds of sale of assets or any income.
Step 3: Why debit?
Since payment of unrecorded liabilities reduces the firm’s resources, it is shown on the debit side of Realisation A/c.
Step 4: Conclude.
Thus, unrecorded liabilities paid are recorded on the Debit side of Realisation A/c.
Final Answer:
\[
\boxed{\text{Debit side of Realisation A/c}}
\]