Question 1
Q1Read the following passage about the properties of graphene and answer the question that follows.
Graphene, a single layer of carbon atoms arranged in a two-dimensional honeycomb lattice, is lauded as a 'wonder material.' Its tensile strength is over 100 times greater than the strongest steel of the same thickness. As a conductor of electricity, it outperforms copper, and as a conductor of heat, it surpasses all other known materials. Furthermore, it is nearly transparent and remarkably lightweight. However, the mass production of high-quality, large-scale graphene sheets remains a significant and costly challenge, which currently limits its widespread commercial application.
What is the primary purpose of this passage?
Show answer & explanation
Correct answer: C
The passage provides a balanced overview of graphene's remarkable properties (strength, conductivity, etc.) while also noting the significant obstacle to its use (production challenges). This indicates an informative purpose, aiming to educate the reader on the topic's key aspects.