Free Crystalline Solids MCQs with Answers
184 Crystalline Solids MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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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184 questions · page 9 of 10
- A. Faces
- B. Edges
- C. Angles
- D. All of these
Explanation: When there is a repetition of "faces", "edges", and "angles" in a crystal when it rotates 360 degrees along its axis the crystal is…
Correct answer: All of these- A. Ionic solid
- B. Covalent solid ·
- C. Pseudo solid
- D. Semi solid
Explanation: The answer is C. Pseudo solids are those solids that may have a physical appearance but when the temperature is changed they flow like…
Correct answer: Pseudo solid- A. Clay
- B. Talc
- C. Asbestos
- D. None of these
Explanation: Clays used in ceramics and pottery are composed of one or more minerals and may contain up to 40-50% silica.
Correct answer: Clay- A. Co.Al2O3.3CaSO4.6H2O
- B. 3Ca.Al2O3.CaSO4.2H2O
- C. 3Ca.Al2O3.3CaSO4.2H2O
- D. 3Ca.Al2O3.3CaSO4.6H2O
Explanation: A is incorrect as the given formula isn't calcium sulpho-aluminate.B is incorrect as the given formula isn't calcium sulpho-aluminate.C is…
Correct answer: 3Ca.Al2O3.3CaSO4.2H2O- A. Isomorphism
- B. Cleavage plane
- C. Anisotropy
- D. Symmetry
Explanation: Anisotropy means having a physical property that has a different value when measured in different directions Graphite is a crystalline…
Correct answer: Anisotropy- A. Covalent solids
- B. Ionic solids
- C. Metallic solids
- D. Molecular solids
Explanation: Covalent solids is called as atomic solid because covalent solids are composed of atoms held together by covalent bonds.
Correct answer: Covalent solids- A. Electrical conductance
- B. Thermal conductance
- C. Molar mass
- D. Refractive index
Explanation: The property that does not change with the change in the direction of crystalline structure in anisotropic crystals is C, molar mass.
Correct answer: Molar mass- A. Cleavage planes
- B. Refractory planes
- C. Sagittal planes
- D. Coronal planes
Explanation: In the context of crystalline solids, cleavage planes refer to specific planes along which a crystal can break or split easily.
Correct answer: Cleavage planes- A. Rhombic
- B. Hexagonal
- C. Tetragonal
- D. Trigonal
Explanation: Graphite is hexagonal because its carbon atoms form hexagonal rings in flat layers, with each atom sp² hybridized and bonded to three…
Correct answer: Hexagonal- A. Relieving internal stress
- B. Removing air bubbles
- C. Eliminating impurities
- D. Enhancing surface shine
Explanation: Annealing is a vital process in glass manufacturing aimed at relieving internal stresses that develop during cooling.
Correct answer: Relieving internal stress- A. Air bubbles
- B. Impurities
- C. Strain
- D. Shining
Explanation: The process of annealing glass is done to reduce internal stresses or strain which could otherwise lead to cracking.
Correct answer: Strain- A. Covalent bonds
- B. Ionic bonds
- C. Metallic bonds
- D. H-bonds
Explanation: Solid mercury, or simply mercury (Hg) in its solid state, is an example of a metal.
Correct answer: Metallic bonds- A. Crystal geometry
- B. Crystal lattice
- C. Crystal habit
- D. None of the above
Explanation: The general shape of a crystal and the proportions of its bounding sides-such as elongate, tabular, bladed, or other-is known as its…
Correct answer: Crystal habit- A. Pure C6H22O6
- B. Impure NaCl
- C. Glass
- D. Mixture of the above two
Explanation: Pure substances generally have sharp melting points. When a pure compound like glucose is heated, it undergoes a phase change from solid…
Correct answer: Pure C6H22O6- A. visible
- B. infrated
- C. X rays
- D. ultraviolet
Explanation: To determine the structure of crystalline solids, the spacing between the atoms of crystal (i.e.
Correct answer: X rays176. The solids in which the molecules or ions are arranged in a regular repetitive manner are called:
- A. Amorphous solids
- B. Glassy solids
- C. Polymers
- D. Crystals
Explanation: Crystals are characterized by a precise and repeating lattice structure that extends in all three spatial dimensions, resulting in a…
Correct answer: Crystals- A. Copper and diamond
- B. Copper and glass
- C. Copper and rubber
- D. Diamond and glass
Explanation: Diamond is a crystal that is transparent to opaque and generally isotropic, native copper is a polycrystal. Therefore the answer will be A.
Correct answer: Copper and diamond- A. Allotropes
- B. Polymorphous
- C. Isomorphous
- D. None of these
Explanation: Two or more substances having the same crystal structure called isomorphous.
Correct answer: Isomorphous- A. Gemstone
- B. Calcium oxide
- C. Graphite
- D. Diamond
Explanation: When we talk about melting points, we're referring to the temperature at which a substance changes from a solid to a liquid.
Correct answer: Graphite- A. Graphite
- B. Nacl crystals
- C. Copper crystals
- D. Ice
Explanation: Graphite has a unique structure made up of layers of carbon atoms arranged in a hexagonal pattern.
Correct answer: Graphite