Question

What is the book wherein various accounts are opened called?

Answer 1

Various accounts are opened when transactions in the books of original entry are posted into Ledger A/c

Answer 2

Answer:

The book where various accounts are open can define as Subsidiary Book.

Subsidiary Books are the books of original entry in which activities of similar nature are recorded in one place and sequential order. In a big company, recording all transactions in one Journal and posting them into several ledger accounts will very difficult and involve a lot of administrative work.