Free Solids MCQs with Answers
357 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.
Solids are classified by particle arrangement and bonding into crystalline, ionic and molecular forms. Questions cover crystal lattices, the shapes and properties of ionic crystals, and lattice energy, including how ion charge and ionic size affect the strength of attractions within an ionic solid.
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Read the Solids notesFree MDCAT chapter notes with key terms357 questions · page 5 of 18
- A. Graphite
- B. Copper
- C. Molten sodium chloride
- D. Mercury
Explanation: Molten sodium chloride contains mobile Na+ and Cl− ions, which carry electric current through the liquid.
Correct answer: Molten sodium chloride- A. Strong covalent bond
- B. Large value of dipole moment
- C. High polarizability
- D. Strong hydrogen bonding
Explanation: Iodine exists as non-polar I2 molecules, but its large electron cloud is easily distorted, producing strong London dispersion forces that…
Correct answer: High polarizability- A. Covalent halides
- B. Electronegative halides
- C. Polymeric halides
- D. Polymeric hydrides
Explanation: When halogen atoms bridge between atoms of another element, the halide species form extended chains or networks, so they are called…
Correct answer: Polymeric halides- A. Nucleus
- B. Neutrons
- C. Electrons
- D. Protons
Explanation: An ionic bond forms when electrons are transferred from one atom to another, producing oppositely charged cations and anions that attract…
Correct answer: Electrons- A. Hydrogen Chloride (HCI)
- B. Chlorine (Cl2)
- C. Xenon(Xe)
- D. Sodium Chloride (NaCI)
Explanation: Sodium chloride has a strong three-dimensional ionic lattice in which oppositely charged Na+ and Cl- ions attract each other.
Correct answer: Sodium Chloride (NaCI)- A. CaF2
- B. NaCl
- C. Glass
- D. Diamond
Explanation: Glass is an amorphous or pseudo-solid: it has rigidity like a solid but lacks the long-range regular arrangement of particles found in…
Correct answer: Glass- A. Ionic crystal
- B. Covalent crystal
- C. Molecular crystal
- D. Any type of crystal
Explanation: Dry ice is solid carbon dioxide, and its individual CO2 molecules remain intact in the solid.
Correct answer: Molecular crystal- A. formula unit
- B. empirical formula
- C. molecular formula
- D. formula mass
Explanation: Ionic compounds form extended crystal lattices rather than separate molecules, so they are described by formula units and formula masses.
Correct answer: molecular formula- A. LiF
- B. NaCl
- C. KBr
- D. CsI
Explanation: Lattice energy decreases as the distance between oppositely charged ions increases, while all these salts contain ions with charges of +1…
Correct answer: CsI- A. A1+3
- B. Cs+
- C. Ba+
- D. Mg+2
Explanation: Heat of hydration becomes larger as ionic charge density increases because a highly charged, small ion attracts water molecules most…
Correct answer: A1+3- A. Na+
- B. K+
- C. Mg+2
- D. Ca+2
Explanation: Mg2+ has the maximum hydration energy because its double positive charge is concentrated in a relatively small ion, producing the…
Correct answer: Mg+2- A. Unidentate
- B. Bidentate
- C. Tridentate
- D. Hexadentate
Explanation: The oxalate ion, C2O4^2-, has two oxygen donor atoms that can attach to the same metal ion, forming a chelate ring.
Correct answer: Bidentate- A. H+
- B. H-
- C. Mg2+
- D. Ca2+
Explanation: An ionic crystal requires a stable lattice of oppositely charged ions, but H+ is only a proton with no electron cloud and does not form an…
Correct answer: H+- A. Crystallite
- B. Unit cell
- C. Unit crystal
- D. Monomer
Explanation: The unit cell is also known as the arrangement of the molecules that results in the shape of the crystalline substance.
Correct answer: Unit cell- A. 1 Unit Cell
- B. 8 Unit Cells
- C. 4 Unit Cells
- D. 2 Unit Cells
Explanation: In this structure, each corner ion is shared between eight unit cells, each ion at the center face of the cell is shared by two cells…
Correct answer: 2 Unit Cells- A. x, y, z
- B. a, b, c
- C. α, β, γ
- D. i, j, k
Explanation: In a unit cell, two different parameters are defined by different notations. 1 Length in a unit cell is determined by x, y and z.
Correct answer: α, β, γ- A. Crystal system
- B. Crystal lattice
- C. Crystal array
- D. Crystallography
Explanation: A lattice is an ordered array of points describing the arrangement of particles that form a crystal.
Correct answer: Crystal lattice- A. Maximum P.E.
- B. Minimum P.E.
- C. Zero P.E.
- D. Infinite P.E.
Explanation: This is the correct answer. In a crystal, atoms are arranged in a way that minimises their potential energy, leading to a stable and…
Correct answer: Minimum P.E.- A. bc=α, ca=β, ab=γ
- B. bc=β, ca=α, ab=γ
- C. bc=γ, ca=β, ab=α
- D. All are possible
Explanation: The angle 'α' is between the lengths 'b' and 'e', the angle 'β' is between the sides "a" and 'e' and angle ʽγ' is between sides 'a' and…
Correct answer: bc=α, ca=β, ab=γ- A. Seven
- B. Fourteen
- C. Six
- D. Thirty-two
Explanation: Option C is correct. there are 6 total unit cell dimensions. These dimensions are: a - the length of the side of the unit cell -a- the…
Correct answer: Six