Dear Shreya, it has been clearly mentioned that no ornaments will be allowed. Along with chain please avoid any kind og metallic ornaments as they can be detected by Metal detectors and might cause problems. As chain comes under that category, it is barred. Regarding trousers, as Salwars and trousers are allowed, you can wear Trousers. Please choose either slippers or low heels as shoes are not allowed for the exam. For complete information on NEET Dress code, please use our link: https://medicine.careers360.com/articles/neet-dress-code