Materials Science MCQ Questions and Answers

Explanation: Materials science still incorporates elements of physics, chemistry, and engineering.

Explanation: Materials, which atoms and molecules form constituents in the nanoscale (i.e., they form nanostructure) are called nanomaterials. Nanomaterials are subject of intense research in the materials science community due to the unique properties that they exhibit.

Explanation: Generally ceramics have equal or better hardness, toughness and yield strength but are highly susceptible to plastic deformation. Even a small stress beyond their yield point leads to fracture.

Explanation: Atomic number or the number of protons is the property that differentiates atoms of one species from another. For e.g., atomic numbers of Hydrogen and Helium are 1 and 2 respectively.

Explanation: True, The interdisciplinary field of materials science, also commonly termed materials science and engineering

Explanation: Generally, lower potential energy means more stability. Excited electrons lose energy in the form of photons to shift to stable empty inner shells. Positron is anti-particle of an electron.

Explanation: Nanostructure deals with objects and structures that are in the 1 - 100 nm range.

Explanation: Metallic, covalent, and ionic bonds are strong in nature, hence primary; hydrogen bond has comparatively lower bond energies; hence secondary.

Explanation: True, Nanoscale structure in biology is often called ultrastructure.

Explanation: Nanotubes have two dimensions on the nanoscale, i.e., the diameter of the tube is between 0.1 and 100 nm; its length could be much greater.