Hello Bhanu,
NEET UG 2019 exam would be conducted only once a year in offline mode only. National Testing Agency (NTA) would be conducting the NEET exam.
NEET is the entrance exam for admission to Medical, Dental and AYUSH courses in the country except AIIMS and JIPMER. The exam will be held on May 5, 2019.
Go through the link below to check the detailed information-

 https://medicine.careers360.com/articles/neet-2019

Good Luck!

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NEET UG exam shall be conducted only once ayear in May Month 2019 and exam shall consider negative marking as well. Unlike Jee, its only once a yeae. 

Exam shall b ein offline mode. 

https://indianexpress.com/article/education/neet-pg-2019-mds-2019-dates-announced-check-at-natboard-edu-in-5348434/

https://medicine.careers360.com/articles/neet