For NDA examination, knowledge from both classes 11 and 12 will be required. There will be chapters as well from classes below 12 in the examination. The NDA I paper will consist of maths and general ability test while the NDA II paper will comprise of only general ability test which are divided into partA and part B where part A includes english and general knowledge while part B includes physics, Chemistry, General Science, History, Freedom Movement etc, Geography and Current Events. The duration for both NDA I and NDA II is 2hours 30 minutes.
In the link mentioned below, jump to the syllabus part to get a more detailed view of the syllabus.