The multiple-choice questions that make up the LSAT─India reflect a broad range of academic disciplines and are not intended to give any advantage to candidates from a particular academic background. The LSAT─India does not include questions requiring the mastery of any specific discipline or set of facts. For example, it does not test your knowledge of history, political theory, mathematics, or even general knowledge. Rather, it is a test of important critical thinking skills acquired over your educational lifetime. Therefore, you don't need to learn facts by rote for the LSAT─India. You only need to practice the critical thinking skills that it assesses.
First, familiarise yourself with the types of test questions. You can start by studying the Sample Questions with Explanations.