What the price we have to pay ( with exchange) per euro in Indian rupees when we go to bank to purchase euros.?

Depends on where you buy your Euros.

It can be as much as €5 plus 10% of the transaction fee.

It is rarely less than either just €5 or 5% to 10% of the amount exchanged.

When they do not charge you get a lousy exchange rate that results in even less money going your way unless you change really little money at a time.

I have always found it cheaper to keep my money in the bank and use a debit or ATM card in the ATM machines wherever I go.

Beter exchange rates and lower costs all over.

I am not going to convert that to rupees for you, any exchange rate site can do. Just google Euro to Rupee.