Rnor or nri

1. ITR 2

2. NRI

3. In case, refund amount is sizable.

1. According to sec 6 
i) if any person who had not stayed in India for 182 days or more, (or) 
ii) had stayed for more than 60 days during the PY and stayed for more than 365 days during the post previous 4 years will be regarded as Residents of India for the purpose of Income Tax Act. 
2. Since in your case you don't satisfy either of the conditions, hence you will be treated as Non- Resident during the FY 2018-19 for the purpose of Income Tax Act. To put it more appropriate you will be treated as Non - Resident Indian (NRI). 
2. The relevant ITR would be ITR -2 and from FY 2018-19 ITR -1 is applicable only for Residents. 
3. It is to be noted that if the income of Individual (Resident or Non-resident) if it does not exceed Rs. 2,50,000 then no need for filing IT return. However, in your case since you have income below basic slab limit, TDS was deducted on the same it shall be claimed by filing IT return. Whatever the amount deducted as TDS can be claimed as a refund. 
Please correct me if the above solution has an alternative view.