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 5 of 10
- A. Symmetry
- B. Habit of crystal
- C. Isomorphism
- D. Polymorphism
Explanation: The shape in which a crystal usually grows is called the habit of the crystal.
Correct answer: Habit of crystal82. What system has all the three axes and three angles of unequal length and none of the angles 90?
- A. Cubic system
- B. Triclinic system
- C. Tetragonal system
- D. Monoclinic system
Explanation: Triclinic crystals have all unequal axes and, no angle equal to 90 degrees.
Correct answer: Triclinic system- A. Melted
- B. Broken
- C. Heated
- D. Cooled
Explanation: A cleavage plane appears in a crystal when it is subjected to mechanical stress along a specific direction or plane that corresponds to a…
Correct answer: Broken- A. Atoms
- B. Ions
- C. Molecules
- D. All of these
Explanation: A crystal can be made up of atoms, ions, or molecules. The type of particles that make up a crystal depends on the substance that the…
Correct answer: All of these- A. Isotrope
- B. Crystals
- C. Crystallite
- D. Bakelite
Explanation: OPTION A: Isotrope refers to a material that has the same physical properties in all directions.OPTION B: Crystals refer to a solid…
Correct answer: Crystallite- A. Ores
- B. Crystalline Solids
- C. Amorphous Solids
- D. None of these options is correct
Explanation: Amorphous solids do not have a regular, ordered arrangement of atoms or molecules.
Correct answer: Amorphous Solids- A. Sedimentation
- B. Drying
- C. Heating
- D. Cooling
Explanation: Crystals are obtained from a saturated solution through cooling. When a saturated solution is cooled, the solute molecules can no longer…
Correct answer: Cooling- A. Compounds
- B. Molecules
- C. Ions
- D. Elements
Explanation: Allotropes are different structural forms of the same element and can exhibit quite different physical properties and chemical behaviours.
Correct answer: Elements- A. Diamond
- B. Graphite
- C. Nail
- D. Iodine
Explanation: Option A: diamond does not conduct electricityOption B: In graphite each carbon is bonded to three other carbon atoms hence leaving behind…
Correct answer: Graphite- A. Bi
- B. Sn
- C. Fe
- D. Zn
Explanation: The tetragonal system is a crystal system in which the unit cell of the lattice is a right prism on a square base (a=b).
Correct answer: Sn- A. Translational
- B. Vibrational
- C. Both Options A & B are correct
- D. None of these options are correct
Explanation: Solids are rigid in nature as the particles of solids are held in fixed positions and cannot move freely.
Correct answer: Vibrational- A. Silicon carbide
- B. Diamond
- C. Both options A and B are correct
- D. None of these options are correct
Explanation: a) Silicon Carbide (SiC): Silicon carbide is a covalent crystal with a giant molecular structure.
Correct answer: Both options A and B are correct- A. Cubic system
- B. Tetragonal system
- C. Triclinic system
- D. Hexagonal system
Explanation: Option A: In a cubic system, all three axes are of equal length and all are at right angles to each other.
Correct answer: Tetragonal system- A. Isotropic
- B. Anisotropic
- C. Mesotrophic
- D. Neotropic
Explanation: An amorphous solid is isotropic, which means that its physical properties are identical in all directions.
Correct answer: Isotropic- A. High density
- B. No free electron
- C. Tight structure
- D. Transparent to light
Explanation: Since each carbon atom is attached to the other four carbon atoms through strong covalent bonds.
Correct answer: No free electron- A. Atoms
- B. Molecules
- C. Ions
- D. All of these options are correct
Explanation: Crystalline solids are a three-dimensional collection of individual atoms, ions, or whole molecules organized in repeating patterns.
Correct answer: All of these options are correct- A. Isomerism
- B. Allotropy
- C. Anistropy
- D. All of these options are correct
Explanation: Allotropy, or allotropism, is the property of some elements to exist in two or more different forms in the same physical state, known as…
Correct answer: Allotropy- A. Sublimation
- B. Evaporation
- C. Abrupt cooling
- D. Hammering
Explanation: Many crystalline solids can be changed into amorphous solids by melting and then cooling the molten mass rapidly.
Correct answer: Abrupt cooling- A. Ruptured
- B. Changed
- C. Unchanged
- D. None of these
Explanation: Option C is correct as crystals have a 3D lattice structure that cannot be "changed" by turning a crystal into powder as the unit cell is…
Correct answer: Unchanged- A. Simple microscopy
- B. MRI
- C. X-ray diffraction
- D. Projection of neutrons
Explanation: The crystal structure is determined by "X-ray diffraction". A beam of X-rays strikes the crystal, and the diffraction pattern is then used…
Correct answer: X-ray diffraction