The Railway Science Group D (RSGD) NTPC Exam is a national level exam for Group D candidates. It is a one-line test wherein the candidates have to choose from one of the three options: biology, chemistry, or physics. There are 50 questions in the test, and each question has four possible answers. The candidates will be given 20 seconds to make a choice, and they will be given another 20 seconds to make a correction. If they choose the correct option, they will get a mark, and if they choose the wrong option, they will not get a mark.

The candidates will be given the same test in the same format in the next year, and they will be given the option of choosing any one of the three subjects: biology, chemistry, or physics.