Which symbol is used for household products?
A. Agmark
B. BIS Hallmark
C. ISI
D. Woolmark

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Hint:
> It is a body set up when India gained independence to create standards needed for orderly commercial growth and maintaining quality in industrial production.
> The mark certifies that a product conforms to the Indian standards developed by the Bureau of Indian Standards.

Complete answer:
Option A) Agmark – is an incorrect answer because this symbol is not used for household products. AGMARK is a certification mark employed on agricultural products in India. Its effective region is India. Thus, it is incorrect here.

Option B) BIS Hallmark – is an incorrect answer because this symbol is not used for household products. The BIS hallmark is a hallmarking system for gold, as well as silver jewellery sold in India, certified the purity of the metal. India is the second biggest market for gold and its jewellery. XRF machine is used for the analysis of gold purity testing.

Option C) ISI – is a correct answer because the ISI symbol is used for the household products. The ISI stands for Industrial Standards Institution. ISI mark is a standard mark for the industrial products in India since 1955. The mark certifies that a product conforms to the Indian standards developed by the Bureau of Indian Standards. The ISI mark is compulsory for certain products to be sold in India such as many electrical appliances, kitchen appliances, etc.

Option D) Woolmark – is an incorrect answer because this symbol or mark is not used for household products. Woolmark is used for wool products. It is a trademark owned by The Woolmark Company.

Thus, the correct answer is C

Note
> ISI stands for the Indian Standards Institute.
> The ISI mark is compulsory for certain items.
> This mark can be only used on the products post-grant of license from the BIS (Bureau of Indian Standards).