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 18 of 18
- 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- A. Cubic
- B. Orthrombic
- C. Tetragonal
- D. Rhombohedral
Explanation: Option D is correct.The crystal system that does not have β=γ=90° is rhombohedral.
Correct answer: Rhombohedral- A. PbCrO4
- B. BaSO4
- C. ZnO
- D. NaOH
Explanation: The correct answer is Barium sulfate (BaSO₄), which crystallizes in the orthorhombic crystal system.
Correct answer: BaSO4- A. Anisotropy
- B. Isomorphism
- C. Polymorphism
- D. Allotropy
Explanation: Allotropy refers to the ability of an element to exist in different physical forms, often with different crystal structures or molecular…
Correct answer: Allotropy347. In crystalline structure, when the length of all axes and angles are unequal then crystal will be.
- A. Cubic
- B. Monoclinic
- C. Orthorhombic
- D. Triclinic
Explanation: In crystallography, the crystal system is determined by the lengths of the axes and the angles between them.
Correct answer: Triclinic- A. More than NaBr crystal
- B. Less than NaBr crystal
- C. Equal to NaBr crystal
- D. NaCl crystal doesn't conduct electric current
Explanation: In solid form, NaCl does not conduct electricity because its ions are locked in place within the crystal lattice and cannot move freely.
Correct answer: NaCl crystal doesn't conduct electric current- A. High melting point
- B. Deform when struck
- C. Fragility
- D. Crystalline
Explanation: Fragility refers to the tendency of a substance to break or shatter easily.
Correct answer: Fragility- A. ionic and covalent
- B. covalent and ionic
- C. covalent and coordinate covalent
- D. ionic and coordinate covalent
Explanation: The correct answer is 'ionic and covalent'. PbCl₂ is ionic because lead is in a +2 oxidation state, leading to electron transfer and ionic…
Correct answer: ionic and covalent- A. ionic compounds
- B. polymeric compounds
- C. covalent compounds
- D. coordination compound
Explanation: Fajan's rule explains that small, highly charged ions have high polarizing power due to their charge density.
Correct answer: covalent compounds- A. The ionic bonds are non-directional in character
- B. The crystals of covalent compounds are made up of molecules
- C. The covalent bonds are rigid and non-directional
- D. Ionic compounds have high melting points and boiling points
Explanation: Covalent bonds are directional because they involve specific orientations of shared electron pairs, leading to definite molecular shapes.
Correct answer: The covalent bonds are rigid and non-directional- A. one mole of gaseous ions is dissolved in one mole of water
- B. one mole of ions in solid state is dissolved in one mole of water.
- C. one mole of gaseous ions is dissolved in water to give infinitely dilute solution
- D. one mole of ions in solid state is dissolved to form concentrated solution
Explanation: Hydration energy is defined as 'the energy released when one mole of gaseous ions dissolves in water to give an infinitely dilute…
Correct answer: one mole of gaseous ions is dissolved in water to give infinitely dilute solution- A. The energy absorbed when 1 mole of an ionic crystal lattice is formed from its constituent ions in the gaseous state.
- B. The energy liberated when 1 mole of an ionic crystal lattice is formed from its constituent ions in the gaseous state.
- C. The energy liberated when 1 mole of an ionic crystal lattice is split into its constituent ions in the gaseous state.
- D. None of the above
Explanation: Lattice energy refers to the energy change associated with the formation of an ionic solid from its gaseous ions.
Correct answer: The energy liberated when 1 mole of an ionic crystal lattice is formed from its constituent ions in the gaseous state.- A. Haber process
- B. Born Haber cycle
- C. Hess's law
- D. Enthalpy changes
Explanation: The answer is Haber process because it is the process of formation of ammonia from nitrogen and hydrogen under high pressure.
Correct answer: Haber process- A. 4
- B. 6
- C. 8
- D. 2
Explanation: The coordination number of an ion refers to the number of ions or atoms that surround and are bonded to the central ion in a compound.
Correct answer: 4- A. Acidic
- B. Crystalline
- C. Amorphous
- D. Neutral
Explanation: White lead, like most pigments precipitated from solution, sets as an amorphous solid: its particles have no long-range ordered lattice…
Correct answer: Amorphous