IN CODE Q5, THREE ANSWER KEYS  ARE WRONG. THESE ARE 6,10 AND 23.

Dear Student,

I have answeres for both of your queries questions and they are mentioned in the following manner:

1. NEET 2019 Paper Doubts:

• There are total 3 doubtful questions. There are 2 wrong questions in NEET 2019 from Chemistry section. While there is 1 doubtful question in NEET 2019 from Physics section. No doubts in questions from Biology section.Questions number 8 and 13 from Chemistry and 81 from Physics section are doubtful.Physics has a 1wrong question. While in Chemistry, there are two wrong questions, one question has two correct answer options while 1 question is wrong.
• In case if an objection is raised, then an authority may constitute an expert committee to look into the answer key challenges. If examination authority, National Testing Agency (NTA) agrees to these 3 questions with problems, 12 bonus marks may be awarded to NEET 2019 examinees who have attended the question as the unattended are counted as no marks.

2.Those Who Didn't Challenge:

• As for your query, if even a single individual challenges a question and that challenge turns out to be correct, all the aspirants in the country will be benefited as mentioned by the NTA.
  

I Hope My answer has satisfied you.

BEST OF LUCK!!