Revenue expenditures are costs incurred to maintain the normal operations of a business. These costs are allocated to different accounts based on their nature: direct costs related to production go to the manufacturing account, costs related to the purchase and sale of goods go to the trading account, and administrative or selling expenses are recorded in the profit and loss account. All these statements reflect the consumption of resources during the period.

A bank overdraft (iv) is a current liability as it is repayable on demand. Debentures (i) are typically long-term liabilities. Prepaid rent (ii) is a current asset, and interest accrued (iii) is a current liability. However, based on the provided options, only 'iv' is correctly identified as a current liability, though interest accrued is also technically a current liability.

Let Sales = S. Gross Loss = 0.25S. Cost of Goods Sold = Sales + Gross Loss (since it is a loss). 1,20,000 = S + 0.25S. 1,20,000 = 1.25S. S = 1,20,000 / 1.25 = 96,000. Thus, the sales amount is Rs. 96,000.

Inventories are classified as current assets because they are expected to be sold or consumed within the normal operating cycle of a business, typically within one year. This classification helps stakeholders assess the liquidity of the firm by showing assets that can be converted into cash relatively quickly.

The Trading Account includes all direct expenses related to production or purchase of goods. Wages are a direct expense and are debited to the Trading Account. Outstanding wages are liabilities, and advance payments are assets, both of which appear on the Balance Sheet. Therefore, 'Wages and salary' is the only item listed that represents a direct cost of production.

If profit is 20% of sales, then cost is 80% of sales. Sales = Cost / 0.80 = 48,000 / 0.80 = 60,000. Gross profit = Sales - Cost = 60,000 - 48,000 = 12,000.

Operating expenses are calculated by subtracting the net profit (or adding the net loss) from the gross profit. Here, Gross Profit (5,000) - Operating Expenses = Net Loss (-1,000). Therefore, Operating Expenses = 5,000 + 1,000 = 6,000. This calculation helps determine the efficiency of core business operations.

The standard formula for Cost of Goods Sold (COGS) is Opening Stock + Purchases - Closing Stock = COGS. Rearranging this, we get Opening Stock = COGS + Closing Stock - Purchases. Option D is mathematically incorrect because it subtracts both closing stock and purchases from COGS, which does not isolate the opening stock correctly.

A current asset is an asset that can be converted into cash within one year. Closing stock, debtors, and bills receivable are all examples of current assets. Conversely, a bank overdraft represents a liability, specifically a current liability, as it is an amount owed to the bank that must be repaid in the short term.

A balance sheet represents the financial position of an entity at a specific point in time. It contains assets (real accounts) and liabilities/equity (personal accounts). Nominal accounts, which relate to income and expenses, are closed out to the Profit and Loss account and do not appear on the balance sheet.