After preparing the above trial balance, the following adjustments were identified. You are required to pass the necessary adjustment entries, prepare a revised Trial Balance and close the accounts. 

1. Make provision for depreciation @ 7.5% on machinery on the original cost. 

2. Stock in hand on 31st December 2017 amounted to ₹ 2,875,000. 

3. 3% of the trade receivables are to be provided as doubtful. 

4. Salaries amounting to ₹ 175,000 are outstanding.