Question

What is Standard Meridian? From where does it pass through in our country? What is its significance?

Answer 1

Standard Meridian is the meridian (longitude)which is used to describe time of a country , it should be the same for the whole country and all the places in a country should follow this same time

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The standard meridian of India is 82.5 ° E and it passes through the center of our country and passes through  Mirzapur in Uttar Pradesh

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its significance is that
1)there will be no confusion about time in an country
2)all the places in a particular country will have the same time

Answer 2

Definition of standard meridian. : a meridian used for determining standard time of a country. The standard meridian of India is 82.5 degree east