1. Yes you are supposed to give your EMAIL Id with which u registered, it is also your Login ID
2. You can withdraw using Cheque or to your Bank Account.
For Cheque there is 5$ Fees for processing and Mailing.
For Bank - There is Rs 50 Fees for any transaction less than Rs 7000. Above 7000 there is no fees.
All Payments will be converted to Indian Rupee
3. Exchange would be one
which sucks - aroound Rs 38

4. I think i answered this above, or i didnt understand what u want to say
5. Verfied Accounts have no limitations. Unverified accounts have limits like
a. Cannot send money more than 100$ (Lifetime) till u verify
b. Cannot Withdraw more than 500$ a month subject to 3000$ lifetime until u verify.