gs1medium
In the context of electric vehicle batteries, consider the following elements:
I. Cobalt
II. Graphite
III. Lithium
IV. Nickel
How many of the above usually make up battery cathodes?
- A.Only one
- B.Only two
- C.Only three
- D.All the four
▶ Answer & Explanation
Correct answer: C. Only three
Lithium-ion batteries, commonly used in electric vehicles, utilize cathode materials that typically include lithium along with transition metals like cobalt and nickel. Graphite is primarily used as the anode material in these batteries. Therefore, three of the listed elements are usually components of the cathode.
Source: UPSC gs1 2025