Hey Gupta,

NTU University

The entire Application procedure for when to apply, where to apply and what doccuments are to be submitted is provided in the following website link,

http://admissions.ntu.edu.sg/graduate/R-Programs/R-WhenYouApply/Pages/R-HowtoApply.aspx

NUS university,

For NUS University you can check everything detailed on the following website link,

http://www.nus.edu.sg/admissions/undergrad/apply/international/applications/WYA-applicationform.html

All the best!