Final answer:
The requirement for chattels and fixtures to be in good working order in a contract is known as a warranty, which is an assurance that goods meet certain standards.
Step-by-step explanation:
The requirement for chattels and fixtures to be in good working order refers to a guarantee in a contract, and in legal terminology, this is known as a warranty. A warranty is a form of assurance provided by the seller to the buyer, affirming that the goods or property meet certain agreed-upon standards or conditions. Unlike a condition, which is a fundamental term that goes to the root of the contract, a warranty is a minor term, which if breached, usually results in damages rather than a right to reject the goods or terminate the contract outright.