You will be checked on your Mathematics, Engineering Mechanics and English language skills. In every sections  you are given 50 questions. Every correct answer gets you 4 marks and a wrong answer takes away 1 mark in the form of negative marking. The exam is for 2 hours and 15 minutes a and is conducted offline in pen and paper mode. The questions are MCQ. You should prepare from books like:

Lateral Entry to Engineering Exam Guide by RPH Editorial Board

LEET 2020 Guide by GKP

LEET for Lateral Entry to Engineering Degree Programmes by Gurmeet Singh and Dr. Vaneet Singh