Which one ol the following is as light as a feather and as strong as iron?
Correct answer: B. Graphene
- A. Graphite
- B. Graphene
- C. Mercury
- D. Diamond
Explanation
It is as light as a feather, more than 100 times stronger than steel and a lightning conductor of electricity. It is also destined to reshape our lives. Graphene has yet to become a household name in industrial products even though it is a breakthrough material.
This question appeared on the NUMS 2022 paper, which you can sit online with every answer explained.
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About Crystalline Solids
Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.
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