Question

in_________ geological survey of India was established​

Answer 1

Explanation:

IN 1851 , geological survey of India was established .The Geological Survey of India (GSI), founded in 1851, is a Government of India Ministry of Mines organisation, one of the oldest of such organisations in the world and the second oldest survey in India after Survey of India

Answer 2

Answer:

in 1851 geological survey of India was established

so the answer is

1851

hope it helps you

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