Along with the answer key the AP EAMCET question papers have been released. Candidates can raise objections against the AP EAMCET answer key till sept 28.

More details at:
http://timesofindia.indiatimes.com/articleshow/78332273.cms?utm_source=contentofinterest&utm_medium=text&utm_campaign=cppst

Hello Aspirant,

Happy to see your interest in this field.

But no as preliminary key is not the final key as it is only prescribed key.

Yes it may happen that sometime premilinary key is wrong and you are right but you can not file any objection.

They will simply say it is by mistake and we will provide right answer in final answer.

Hope this was helpful to you .

All the best for your future.