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 3 of 10
- A. impurities
- B. crystals
- C. solvents
- D. both A & B
Explanation: Animal charcoal is an adsorbent that removes coloured impurities from a hot solution by holding their molecules on its large surface.
Correct answer: impurities- A. vapourization
- B. solvent extraction
- C. filtration
- D. crystallization
Explanation: When a hot saturated solution is cooled, its solubility decreases and the excess dissolved solute separates as crystals, a process called…
Correct answer: crystallization- A. Plastic
- B. glass
- C. porcetain
- D. fiber
Explanation: A sintered crucible is made from glass particles fused sufficiently to form a rigid porous filtering body, with fine pores that retain the…
Correct answer: glass- A. plastic
- B. fibre
- C. porcelain
- D. steel
Explanation: A Gooch crucible is commonly made of porcelain and contains a porous base or filter layer for collecting precipitates during suction…
Correct answer: porcelain- A. Metallic
- B. Amorphous
- C. Crystalline
- D. Vitreous
Explanation: Crystalline solids have particles arranged in a regular repeating pattern and therefore possess long-range order; they are commonly called…
Correct answer: Crystalline- A. Infinite
- B. Negligible
- C. Medium
- D. No concept of viscosity in solid
Explanation: In the idealized treatment of solids, particles are fixed in position and cannot flow, so the viscosity of a solid is considered infinite.
Correct answer: Infinite- A. Sharp melting point
- B. Definite geometry
- C. Transition temperature
- D. Colour
Explanation: Crystalline solids have a sharp, fixed melting point because their regular lattice breaks down at a definite temperature.
Correct answer: Sharp melting point- A. Converted into wires
- B. Converted into thin sheets
- C. Melted easily
- D. All of the above
Explanation: Malleability is the ability of a solid to be hammered or pressed into thin sheets without breaking.
Correct answer: Converted into thin sheets- A. Iron
- B. Graphite
- C. Silver
- D. Platinum
Explanation: Graphite conducts electricity because its carbon layers contain delocalized electrons, but its layered structure makes it soft and not…
Correct answer: Graphite- A. Same physical and chemical properties
- B. Same physical and different chemical properties
- C. Different physical and same chemical properties
- D. Different physical and chemical properties
Explanation: Isomorphic substances have different chemical compositions but crystallize in the same or similar crystal form, so their physical and…
Correct answer: Different physical and chemical properties- A. Sulphur
- B. Carbon
- C. Silica
- D. Tin
Explanation: Bucky balls are fullerene molecules, especially C60, which are an allotrope of carbon made of carbon atoms arranged in a hollow cage.
Correct answer: Carbon- A. Isomorphism
- B. Polymorphism
- C. Anisotropy
- D. Allotropy
Explanation: Polymorphism is the ability of the same compound to exist in two or more different crystal structures.
Correct answer: Polymorphism- A. Atoms
- B. Ions
- C. Molecules
- D. A, B, and C
Explanation: Solids may be atomic, ionic, or molecular depending on the particles occupying their lattice or structure.
Correct answer: A, B, and C- A. X - ray diffraction
- B. Spectrophotometer
- C. Optical microscope
- D. Electron microscope
Explanation: X-ray diffraction measures the regular spacing of atoms in a crystal, and these spacings can be used to determine atomic or ionic radii.
Correct answer: X - ray diffraction- A. Hot air currents
- B. folds of filter paper
- C. oven
- D. Vacuum desiccator
Explanation: A vacuum desiccator removes moisture at low pressure without exposing crystals to strong heating, so it is safer for heat-sensitive…
Correct answer: Vacuum desiccator- A. Nature of reactants
- B. Nature of crucible
- C. Nature of product
- D. Nature of precipitate
Explanation: The choice of filter medium depends mainly on the nature of the precipitate, including its particle size, texture, and tendency to pass…
Correct answer: Nature of precipitate- A. sodium
- B. diamond
- C. graphite
- D. magnesium
Explanation: Diamond is exceptionally hard because each carbon atom forms four strong covalent bonds in a rigid three-dimensional network.
Correct answer: diamond- A. Polar solvent
- B. Non polar solvent
- C. Fused metal
- D. None
Explanation: Metallic crystals dissolve in molten or fused metals because metallic bonding permits metal atoms to mix and form alloys.
Correct answer: Fused metal- A. Plastic
- B. Glass
- C. Rubber
- D. None of the above
Explanation: Anisotropy means that a property has different values in different directions, and this is a characteristic of ordered crystalline solids.
Correct answer: None of the above- A. 24.31
- B. 34.31
- C. 25.25
- D. 44.41
- E. 30.75
Explanation: To determine the atomic weight of the metal M, first recognize that the sulfate compound is isomorphous with ZnSO4.7H2O, meaning it has a…
Correct answer: 24.31