Book keeping controls

Which 2 of these errors are not disclosed by the trial balance?
Error of omission
Double Debit
Error of principle
Unbalanced double entry
Which of these payment methods will reduce funds on the day of payment? (choose 2)
BACS
CHAPS
Cheque
Debit card
Which one of these errors WILL effect the trial balance?
The purchase of a delivery vehicle has been credited to the bank account and debited to vehicle expenses. (error of Commission)
Cash drawings have been debited to the cash account and credited to the drawings account ( reversal of entries)
Purchases have been correctly recorded in the VAT account and PLCA but credited to the purchases account (unbalanced double entry)
Discount received have been completely left out of the accounts. (error of omission)
Does VAT on discounts received go on the debit or credit side of the VAT control account?
Debit
Credit
Which of these describes an error of Principle?
Heating and lighting expenses have been recorded in the offices expenses category.
Heating and lighting expenses have been recorded in he purchases day book
Heating and Lighting expenses have been left out of the accounts.
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