Question

konkani is official language of which state

Answer 1

Goa
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Konkani is official language of goa
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most of the people living in this state speak konkani language and some of the people living in karnataka also speak konkani

their community is called GSB

Answer 2

Goa is the state where Konkani is actually spoken but being from karnataka I know that a lot of people speak Konkani here too.