Step 1: Analyze the accounts.
- General reserve, Machinery, and Capital accounts represent long-term items (reserves and assets).
- Creditors account represents a liability, which is a short-term obligation.
Step 2: Conclusion.
Therefore, Creditors account is the odd one out, as it represents a liability, whereas the others represent long-term items.
Final Answer: \[ \boxed{Creditors \; account} \]