Step 1: Nature of discount.
Discount = capital loss to the company, as debentures are issued below face value.
Step 2: Accounting treatment.
Discount on issue of debentures is not written off immediately; it is shown as a fictitious asset (deferred expenditure) under “Miscellaneous Expenditure” until amortised.
Step 3: Conclude.
Hence, it is shown as Miscellaneous Expenditure in the Balance Sheet.
Final Answer:
\[
\boxed{\text{Miscellaneous Expenditure}}
\]