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 14 of 18
- A. 0.4 x NA
- B. 0.1 x NA
- C. 4 x NA
- D. 0.025 x NA
Explanation: First, find the moles of X: 8 g / 80 g/mol = 0.1 mol. Find the number of atoms: 0.1 × Nₐ. An FCC unit cell contains 4 atoms.
Correct answer: 0.025 x NA- A. A & C
- B. A, B & C
- C. B only
- D. A & B
Explanation: A.Ferromagnetic substances are permanently magnetised.Correct.Ferromagnetic materials (like iron, cobalt, nickel) have magnetic domains…
Correct answer: A & B- A. 2.07 g/cc
- B. 2.46 g/cc
- C. 1.19 g/cc
- D. None of these
Explanation: Sodium (Na) has a body-centered cubic (BCC) structure.Given interatomic distance = 53.6 pm, this is not the unit cell edge length.In BCC…
Correct answer: None of these- A. r=h/3.266h
- B. r=h/2
- C. r=h/1.633
- D. r=3h/4
Explanation: r=h/3.266 - CorrectThis matches the derived relationship from the ideal hcp ratio, where c/a=1.633 and a=2ra = 2rHence, h=c=1.633×a=3.266r…
Correct answer: r=3h/4- A. A4B3
- B. A2B
- C. AB3
- D. A2B3
Explanation: This is the following solution:A atoms at corners:Each corner atom is shared by 8 unit cells → contribution per unit cell = 1/8Number of…
Correct answer: AB3- A. 154.1 pm
- B. 92.6 pm
- C. 366.3 pm
- D. None of these
Explanation: In body centred cubic lattice, oppositely charged ions touch each other along the cube.
Correct answer: 154.1 pm- A. 74.50 g mol-1
- B. 103.30 g mol-1
- C. 56.02 g mol-1
- D. 65.36 g mol-1
Explanation: To find the molar mass of the substance in an fcc lattice, use the formula:M = (density × NA × a3) / Z, where:Density = 2 kg dm-3 = 2000 g…
Correct answer: 103.30 g mol-1268. Find the Error.The United States is(A) anxious to(B) improve their(C) image in Latin America(D).
- A. The United States is
- B. anxious to
- C. their
- D. in Latin America
Explanation: Since "The United States" is treated as a singular entity, the correct pronoun should be "its," not "their."
Correct answer: their- A. Struck
- B. Rebuff
- C. Stop
- D. Harmonise
Explanation: Struck is an impression commonly used to describe bumping into someone.
Correct answer: Struck- A. onto
- B. above
- C. as if
- D. were
Explanation: The correct phrase should be "on top of the mountain". The word "onto" is incorrect, it implies movement or action, whereas "on" is a…
Correct answer: onto- A. Only I follows
- B. Only II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow
Explanation: The correct answer is that neither I nor II follows. The issue of conjunctivitis arises annually, not just every four years, rendering the…
Correct answer: Neither I nor II follows- A. Only conclusion I follows.
- B. Only conclusion II follows.
- C. Either I or II follows.
- D. Neither I nor II follows.
- E. Both I and II follow.
Explanation: The correct answer is Option A: Only conclusion I follows. The statement suggests a conflict between the ideal of ethics and morality and…
Correct answer: Only conclusion I follows.- A. 4 and 2
- B. ÷ and -
- C. 16 and 6
- D. - and +
Explanation: By interchanging the '÷' and '-' signs, the equation becomes (16 ÷ 4) × 6 - 2 + 8.
Correct answer: ÷ and -- A. Statement I is the cause and statement II is its effect
- B. Statement II is the cause and statement I is its effect
- C. Both the statements I and II are independent causes
- D. Both the statements I and II are independent effects
Explanation: Allowing private airlines to operate internationally (Statement I) is a government policy decision.
Correct answer: Both the statements I and II are independent causes- A. Friedrich Reinitzer
- B. William crooks
- C. Bravis
- D. J J Thomson
Explanation: Friedrich ReinitzerExplanation: Friedrich Reinitzer, an Austrian botanist and chemist, is credited with the discovery of liquid crystals.
Correct answer: Friedrich Reinitzer- A. sulphur
- B. Amorphous
- C. Crystalline
- D. Vitreous
Explanation: Only crystalline solids show all the properties of true solids.
Correct answer: Crystalline- A. Anisotropy
- B. Isomorphism
- C. Allotropy
- D. Polymorphism
Explanation: When an element exists in more than one crystalline forms, it is known as allotropy.
Correct answer: Allotropy- A. Anisotropy
- B. Isomorphism
- C. Allotropy
- D. Polymorphism
- E. Option C and D
Explanation: Allotropy specifically refers to the existence of an element in two or more different structural forms when they are in the same physical…
Correct answer: Allotropy- A. Face-centered cubic
- B. Metallic appearance
- C. 1-1 (g) > 1 - 1 (s) Bond lenght
- D. 1-1 (g) < 1 - 1 (s) Bond lenght
Explanation: 1-1 bond distance is 271.5 pm and it is appreciably longer than in gaseous iodine (266.6pm).Option C suggests that the bond length between…
Correct answer: 1-1 (g) > 1 - 1 (s) Bond lenght- A. Ionic
- B. Molecular
- C. Covalent
- D. Metallic
Explanation: Molecular crystals are formed by individual molecules held together by various types of intermolecular forces, including London dispersion…
Correct answer: Molecular