MTL 200 Questions and Correct Answers/
Latest Update / Already Graded
Crystalline Material
Ans: Atoms arranged in a repeating pattern over large
distances.
Lattice
Ans: Three-dimensional array of points coinciding with atom
positions.
Unit Cell
Ans: Smallest repeating unit of a lattice, basic building block.
Polymorphism
Ans: Presence of multiple crystal structures in a chemical
compound.
Allotropy
Ans: Presence of multiple crystal structures in a chemical
element.
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Crystallographic Directions
Ans: Vectors indicating directions in a crystal structure.
Crystallographic Planes
Ans: Planes defined within a crystal structure.
Linear Density
Ans: Density of atoms along a specific direction in a crystal.
Planar Density
Ans: Density of atoms within a specific crystal plane.
Close-Packed Crystal Structures
Ans: HCP: ABABAB stacking, FCC: ABCABC stacking.
Single Crystal
Ans: Periodic atom arrangement without grain boundaries.
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Polycrystalline
Ans: Multiple crystals with varying orientations.
Grain Boundary
Ans: Boundary where atomic alignment differs in
polycrystalline materials.
Anisotropy
Ans: Directional property variation in materials.
Isotropy
Ans: Uniform property distribution in all directions.
X-ray Diffraction
Ans: Analyzing crystal structures using x-ray patterns,
following Bragg's Law.
Bragg's Law
Ans: Relates x-ray diffraction angles to crystal lattice spacing.
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