TestUstad

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.

Last updated

Crystalline SolidsShape of Ionic CrystalsIonic and Molecular CrystalsCrystal LatticeLattice Energy
Read the Solids notesFree MDCAT chapter notes with key terms

357 questions · page 16 of 18

301. Metals look shiny as light that falls on metal surface collides with mobile electrons and make them _ These electrons give light when _

  • A. Neutral Excited
  • B. Excited De-excited
  • C. De-excited Excited
  • D. None of these

Explanation: Option B is correct since when a photon arrives at the metal's surface, they are absorbed because there is an energy gap between orbitals…

Read the full explanation →
Correct answer: Excited De-excited

302. The temperature at which one crystalline form changes to other is called _ temperature?

  • A. Critical
  • B. Absolute
  • C. Transition
  • D. None of these options are correct

Explanation: The transition temperature is defined as the temperature at which two allotropic forms of a certain element coexist in dynamic equilibrium…

Read the full explanation →
Correct answer: Transition

303. CuSO4.5H2O is an example of which crystal system?

  • A. Triclinic
  • B. Tetragonal
  • C. Cubic
  • D. Rhombohedral

Explanation: The triclinic system is a crystal system of which the unit cell is a prism with crystallographic axes of different lengths (a b c) and of…

Read the full explanation →
Correct answer: Triclinic

304. Symmetry is the repetition of_when a crystal rotates at 360 along its axis.

  • A. Faces
  • B. Edges
  • C. Angles
  • D. All of these

Explanation: When there is a repetition of "faces", "edges", and "angles" in a crystal when it rotates 360 degrees along its axis the crystal is…

Read the full explanation →
Correct answer: All of these

305. Glass is an example of what?

  • A. Ionic solid
  • B. Covalent solid ·
  • C. Pseudo solid
  • D. Semi solid

Explanation: The answer is C. Pseudo solids are those solids that may have a physical appearance but when the temperature is changed they flow like…

Read the full explanation →
Correct answer: Pseudo solid

306. Which of the following statements about the properties associated with ionic and covalent bonds is correct?

  • A. The only covalent compounds with high melting points are those in which hydrogen bonds occur.
  • B. Any covalent compound that contains both oxygen and hydrogen in its molecule forms hydrogen bonds.
  • C. lonic bonds and covalent bonds cannot both occur in the same compound.
  • D. lonic compounds differ from metals in that ionic compounds do not conduct electricity in the solid state.

Explanation: The explanation for this question will be added soon.

Read the full explanation →
Correct answer: lonic compounds differ from metals in that ionic compounds do not conduct electricity in the solid state.

307. Solid CO2 dry ice has a structure just like:

  • A. Diamond
  • B. NaCl
  • C. Graphite
  • D. None of the above

Explanation: Molecular crystals are substances that have relatively weak intermolecular binding, such as dry ice (solidified carbon dioxide), solid…

Read the full explanation →
Correct answer: None of the above

308. An example of a non-polar molecular crystal is _.

  • A. Ice
  • B. Iodine
  • C. Sugar
  • D. Salt

Explanation: Option A: Ice, glucose and urea are examples of hydrogen bonded molecular solids due to the hydrogen bonded in the molecular solids.

Read the full explanation →
Correct answer: Iodine

309. lodine has greater heat of sublimation then its family members due to presence of stronger _.

  • A. H-bonding
  • B. London dispersion forces
  • C. Dipole-dipole forces
  • D. Chemical bonding

Explanation: Option B "LONDON DISPERSION FORCES " is the correct option. London dispersion forces are forces of attraction between nonpolar molecules…

Read the full explanation →
Correct answer: London dispersion forces

310. It consists of discrete molecules:

  • A. Sodium chloride
  • B. Dry ice
  • C. Copper
  • D. CaCl2

Explanation: 'Discrete molecules' are units of a compound, the smallest possible i.e.

Read the full explanation →
Correct answer: Dry ice

311. The greater Lattice energy is shown by:

  • A. NaCl
  • B. NaBr
  • C. Nal
  • D. NaF

Explanation: Explanation for this question will be added soon.

Read the full explanation →
Correct answer: NaF

312. Equation represents which energy change? Mg2+(g) + O2-(g) -> MgO(s)

  • A. Atomization
  • B. Neutralization
  • C. Lattice energy
  • D. Solution

Explanation: Explanation for this question will be added soon.

Read the full explanation →
Correct answer: Lattice energy

313. Which statement correctly describes the structure of sodium chloride crystal?

  • A. Each sodium ion is surrounded by six chloride ions and each chloride ions surrounded by six sodium ions
  • B. The crystal is face centered cubic structure
  • C. Each sodium ion is surrounded by 3 chloride ions and each chloride ion surrounded by 3 sodium ions
  • D. Inter molecular forces are present between two oppositely charges ions

Explanation: Explanation for this question will be added soon.

Read the full explanation →
Correct answer: Each sodium ion is surrounded by six chloride ions and each chloride ions surrounded by six sodium ions

314. Co-ordination number of Na is:

  • A. 10
  • B. 9
  • C. 8
  • D. 12

Explanation: The actual coordination number is 6 but the closest one here is 8

Read the full explanation →
Correct answer: 8

315. Chloride ions in NaCl are placed at the corner of a regular:

  • A. Pentagon
  • B. Cuboid
  • C. Octahedron
  • D. Cube

Explanation: Chloride ions are placed in a CCP type of arrangement. It contains chloride ions at the corner and the center of the cube.

Read the full explanation →
Correct answer: Octahedron

316. Definite Shape of NaCl crystal is its_.

  • A. Characteristic
  • B. Symmetry
  • C. Habit
  • D. All of these

Explanation: Crystal habit is the characteristic external shape of an individual crystal or crystal group.

Read the full explanation →
Correct answer: Habit

317. The ionic radius of an ion is the radius of the ion while considering it to be_in shape.

  • A. Oval
  • B. Round
  • C. Rectangular
  • D. Spherical

Explanation: The ionic radius of an ion is the radius of the ion when it is considered to be a sphere.

Read the full explanation →
Correct answer: Spherical

318. The atomic ratio of isomorphs of ZnSO4, and NiSO4 is _.

  • A. 2:1
  • B. 2:1:4
  • C. 1:1:4
  • D. 1:1

Explanation: The term isomorph means when two different substances have the same crystalline shape.

Read the full explanation →
Correct answer: 1:1:4

319. The inter-ionic distance in a crystal lattice of KCl is:

  • A. 314 pm
  • B. 181 pm
  • C. 95 pm
  • D. 300 pm

Explanation: A is correct since the interionic distance of crystal lattice of KCl is 314pmB is incorrect because the interionic distance of crystal…

Read the full explanation →
Correct answer: 314 pm

320. A small building block which belongs to whole information about crystal structure is called?

  • A. Cell
  • B. Unit Cell
  • C. Crystal lattice
  • D. Crystal unit

Explanation: A unit cell is the smallest repeating unit of a crystal lattice that contains all the information about the crystal's structure.

Read the full explanation →
Correct answer: Unit Cell
Start Free Solids Practice MCQs Test