The balance of which of the following accounts do not disappear, once they are debited/credited to Trading Account?

A. Sales
B. Purchases
C. Inward returns
D. Closing stock

The closing stock D. is the value of goods which remain unsold at the end of the period whose balance appears once in Trading Account and once in Balance Sheet of the business.
All other accounts sales A., purchases B. and Inward Returns C. are closed once they are absorbed by the Trading Account. Thus D. is the correct answer.

Which of the following is an item of capital expenditure?

A. Research and development costs during the year
B. Interest on borrowed fund utilized for acquisition of Office Furniture
C. Installation charges paid in conjunction with the purchase of Office Equipment
D. Monthly rent of a machinery used in the business

A capital expenditure is a non- recurring expenditure whose benefit lasts for more than one accounting period. Installation charges paid in conjunction with the purchase of office equipment is an one-time expenditure whose benefit lasts for more than one accounting period.

Any donation received for a specific purpose is a_________?

A. Liability
B. Assets
C. Revenue receipts
D. Capital receipts