To clear NCHMCT-JEE you can refer below points-

1- You can prepare a time table according to your weak and strong subjects. The study schedule should also be incorporated with a timetable for revision. The time duration of study hours varies from person to person. However on an average, 4-5 hours of study is sufficient for preparing for the exam.

2- You can refer previous year papers to know the exam pattern and level of questions.

3- You should go through complete mock test series to analyze your preparation level and you will get to know your weak and strong areas.

You can follow below books for your preparation-

R Gupta, Arihant, Ramesh Hotel Management Entrance Exam Guide by RPH Editorial Board.