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 7 of 10
- A. Refractive index
- B. Coefficient of thermal expansion
- C. Cleavage
- D. Metallic conduction
Explanation: Metallic conduction (Option D) is an example of an isotropic property. Isotropic properties are those that exhibit the same value or…
Correct answer: Metallic conduction- A. Anisotropy
- B. Isomorphism
- C. Allotropy
- D. Polymorphism
- E. C and d
Explanation: Allotropy specifically refers to the existence of an element in two or more different structural forms when they are in the same physical…
Correct answer: C and d- A. Ionic crystal
- B. Molecular crystal
- C. Covalent crystal
- D. Metallic crystal
Explanation: Covalent crystals, due to the strong covalent bonds holding their structures together, typically exhibit the highest melting and boiling…
Correct answer: Covalent crystal- A. Hydrogen
- B. Quartz
- C. Water
- D. Rubber
Explanation: Quartz is an example of an anisotropic material. Its crystal structure leads to different physical properties depending on the direction…
Correct answer: Quartz- A. Allotrope
- B. Crystallites
- C. Isomorph
- D. Polymorph
Explanation: Option B is correct.The crystalline parts of otherwise amorphous solids are known as crystallites.Crystallites are small regions of a…
Correct answer: Crystallites- A. Cubic
- B. Hexagonal
- C. Tetragonal
- D. Trigonal
Explanation: - The coinage metals, which include copper (Cu), silver (Ag), and gold (Au), typically crystallize in the face-centered cubic (FCC) or…
Correct answer: Cubic- A. Cubic
- B. Hexagonal
- C. Tetragonal
- D. Both A and C
Explanation: Option C is correct.The crystalline form of white tin is tetragonal.Tin has two crystalline forms: white tin and gray tin.White tin is the…
Correct answer: Tetragonal- A. lonic solids
- B. Metallic solids
- C. Molecular solids
- D. Covalent solids
Explanation: Metallic solids have delocalized electron due to which they can conduct electricity.
Correct answer: Metallic solids- A. NaCl is cubic and diamond is rhombic
- B. NaCl is rhombic and diamond is cubic
- C. Both are cubic
- D. Both are rhombic
Explanation: NaCl and diamond both have face centered cubic crystalline structures.
Correct answer: Both are cubic- A. Iodine crystal
- B. Solid CO2
- C. Silica
- D. White phosphorus
Explanation: Silica has tendency to form long chain covalent structure such as carbon so it has giant covalent structure.Diamond and graphite (forms of…
Correct answer: Silica- A. Transition
- B. Crack transition
- C. Glass transition
- D. All of these
Explanation: Option A: Transition refers to a change or conversion from one state or form to another.
Correct answer: Glass transition- A. Z
- B. 2Z
- C. Z/2
- D. Z/4
Explanation: As we know, Number of tetrahedral voids in the unit cell = 2 × number of atoms Number of atoms = Z Number of tetrahedral voids in the unit…
Correct answer: 2Z- A. Hexagonal Close Packing
- B. Body-centered Cubic Packing
- C. Simple Cubic Packing
- D. Cubic Close Packing
Explanation: In a CCP structure, the layers of atoms or ions are indeed stacked in a manner where each layer is positioned directly above the preceding…
Correct answer: Cubic Close Packing- A. Ferromagnetism
- B. Ferrimagnetism
- C. Antiferromagnetism
- D. Diamagnetism
Explanation: Magnetite (Fe3O4) exhibits ferrimagnetic behaviour. Ferrimagnetism arises due to the unequal magnetic moments in opposite direction…
Correct answer: Ferrimagnetism- A. Hexagonal
- B. Tetragonal
- C. Monoclinic
- D. Triclinic
Explanation: In the Tetragonal crystal system: The three crystallographic axes are all perpendicular to each other (α = β = γ = 90°).
Correct answer: Tetragonal- A. Interstitial defect
- B. Vacancy defect
- C. Frenkel defect
- D. Schottky defect
Explanation: In a solid lattice, the cation has left a lattice site and is located at interstitial position, the lattice defect is Frenkel defect.
Correct answer: Frenkel defect- A. A & C
- B. A, B & C
- C. B only
- D. A & B
Explanation: In presence of an external magnetic field, ferromagnetic substances are strongly magnetized and even after the removal of magnetic field…
Correct answer: A & B- A. Face-centered Cubic unit cell
- B. Simple Cubic unit cell
- C. Body-centered Cubic unit cell
- D. All of these
Explanation: A void whose structure is cubical is known as cubic void. These voids are found in simple cubic unit cell.
Correct answer: Simple Cubic unit cell- A. Isomorph and polymorph
- B. Allotrope and polymorph
- C. Isomorph and allotrope
- D. All of these
Explanation: Polymorphs and allotrope are different crystalline forms of compounds and elements respectively.
Correct answer: Allotrope and polymorph- A. 13.2°C
- B. 128°C
- C. 95.5°C
- D. 32.02°C
Explanation: Rhombic sulphur95 5" c →←Monoclinic sulphur
Correct answer: 95.5°C