Loan for education

1. Education loan is provided based on the course you have taken up and the nature of the university where you are going to pursue. And if the loan amount is huge security against the loan amount will be asked. However, it varies from bank to bank.  
2. I am assuming the second part of the question is unrelated to the first one. There are two kinds of NRI accounts. 
3. NRE and NRO account. NRE account is for depositing foreign income and it is denominated in Indian rupee. Any interest earned on this account will not be subject to tax. 
4. NRO account is for managing the income earned in India. All these incomes and interest earned on it will be taxable in India. 
Please correct me if the above solution has an alternative view.