BIS Hallmark is imprinted on which of the following items ?

Jewellery

The correct answer is option (2) : Jewellery

The BIS Hallmark is imprinted on jewelry, specifically on precious metal jewelry items. It is a certification mark that indicates the purity and fineness of the metal used in jewelry, such as gold and silver. The Bureau of Indian Standards (BIS) is responsible for setting standards for various products in India, and the BIS Hallmark for jewelry is a way to ensure the quality and purity of precious metal items. Therefore, the correct answer is:

2. Jewellery