Hey!!

No, you would not be allowed to carry anything like key other than your admit card and passport size photographs. There will be so such arrangements to keep your articles. So it's advisable that you should give it to your guardians who will go with you for the exam.

Hope this helps
Best wishes

Dear aspirant,
No, it is not allowed in exam hall. You can only take you admit card and photo with you in exam hall.
According to NEET, No Metallic Items are allowed in exam hall.
Hope it helps.