https://www.business-standard.com/article/pf/goods-assumed-to-be-defective-if-no-proof-of-misuse-113042800504_1.html

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Goods assumed to be defective if no proof of misuse

A consumer who files a complaint has to prove his case. However, there are exceptions to this rule, such as an unexplained accident occurring for no apparent reason. In such a case, defect is presumed and need not be established by the consumer.