Give rectifying Journal entries for the following errors:
(i) Goods returned by Mohan of Rs. 1,500 not recorded in books.
(ii) Goods distributed as free samples for Rs. 5,000 not recorded.
(iii) Depreciation of machinery of Rs. 10,000 not charged.
(iv) Goods costing Rs. 780, selling price Rs. 1,000 given as charity not recorded.