Rectify the following errors:
1. A sale of goods to Raja Ram for 2,500 was passed through the Purchases Book.
2. Salary of 800 paid to Hari Babu was wrongly debited to his personal account.
3. Furniture purchased on credit from Mohan Singh for 1,000 was entered in the Purchases Book
4.R 5,000 spent on the extension of buildings was debited to Buildings Repairs Account.
5. Goods returned by Mani Ram 1.200 were entered in the Returns Outwards Book.