Where should the closing stock appear in?

I think the closing stock should appear on Balance Sheet. It is not shown in the Trial Balance because the closing stock is the leftover balance of goods which were bought during an accounting period. In addition to this, total purchases have already included in the trial balance. And if we will include the closing stock in the trial Balance again, the effect will be doubled.

Whenever closing stock appears in adjustments, it always goes in the credit side of Trading Account, and then on the asset side of Balance Sheet. The closing stock will also not be included in the asset of Profit & Loss account.