OPSC OAS 2019 PrelimsScience & TechnologyQuestion 5
Solved previous year question from the OPSC OAS/OCS 2019 Preliminary Examination (General Studies), with the official answer key and a detailed explanation.
Question
Batteries used in mobile and smart phones are:
Tap an option to check your answer.
Show answer & explanation
Answer & Explanation
Correct answer: (C) Lithium-ion battery
- Modern smartphones predominantly use lithium-ion (Li-ion) batteries due to their high energy density, long life, and minimal self-discharge. Some devices use lithium-polymer (Li-Po), but both fall under the Li-ion technology umbrella
