Can you pay off a loan with a credit card on 0% for 13months?

My brother would like to pay off an outstanding loan but the only way he could do this is by getting a credit card and using the credit to pay off the £2000 loan. my sister told him you cant pay off credit with credit. does anyboy know if this is true? could he pay off his loan with a credit card?
Answer
Yes, it is called a balance transfer.