This document compares and contrasts bills of exchange, promissory notes, and cheques as negotiable instruments under the Negotiable Instruments Act of 1881. It defines each instrument, outlines their key characteristics, and provides examples. A bill of exchange is an unconditional order in writing to pay a fixed sum of money. A promissory note contains an unconditional promise in writing to pay a certain sum of money. A cheque is a bill of exchange drawn on a bank payable on demand. The document then proceeds to compare the three instruments based on their parties, order of payment, acceptance requirements, periods, circulation, ability to be crossed, effects of mistakes, and liabilities if not presented in due course.