*Not really if you are a bachelor and 8500 QAR is your gross salary provided you have 5+ yrs experience.
*Do not even think about it if you are married and 8500 QAR is your gross salary provided you have 5+ yrs experience.

NB:- Qatar is an expensive country to live particular the housing expenses. Negotiate with your Employer for a company provided Bachelor/Family accommodation or at least an allowance that is not less than 8k per month.
A 2BHK unfurnished flat in a reasonable area now a days comes around 5000-7000 QAR per month.
Hope this helps.