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UPCET / UPSEE Solid State — practice questions

Explore 76 free Solid State questions in UPCET / UPSEE Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Solid State questions and exercises with answers

Showing questions 1–30 of 76.

Crystalline solids are characterised by:Read the answer and worked solution →Which of the following arrangements is in correct order of increasing electronegativity (Pauling scale)?Read the answer and worked solution →**Crystalline solids** typically have:Read the answer and worked solution →There are **fourteen** distinct types of three-dimensional space lattices, called:Read the answer and worked solution →The number of crystal systems is:Read the answer and worked solution →Cubic system has how many distinct Bravais lattices?Read the answer and worked solution →The density of a cubic crystal is given by:Read the answer and worked solution →A **simple cubic** unit cell has effective number of particles:Read the answer and worked solution →A **body-centred cubic (bcc)** unit cell has effective number of particles:Read the answer and worked solution →A **face-centred cubic (fcc)** unit cell has effective number of particles:Read the answer and worked solution →Each **corner** particle of a cubic unit cell is shared by how many neighbouring cubes?Read the answer and worked solution →Each **face-centre** particle of a cubic unit cell is shared by how many cubes?Read the answer and worked solution →Each **edge-centre** particle of a cubic unit cell is shared by how many cubes?Read the answer and worked solution →**Coordination number** of a particle in a simple cubic (sc) lattice is:Read the answer and worked solution →**Coordination number** of a particle in a body-centred cubic (bcc) lattice is:Read the answer and worked solution →**Coordination number** of a particle in a face-centred cubic (fcc) lattice is:Read the answer and worked solution →**Hexagonal close-packed (hcp)** structure has coordination number:Read the answer and worked solution →Gold crystallises in the fcc structure with edge length 408 pm. Its density is (M = 197 g/mol, $N_A = 6.022 \times 10^{23}$):Read the answer and worked solution →The relationship between **edge length $a$** and **atomic radius $r$** in a **face-centred cubic (fcc)** unit cell is:Read the answer and worked solution →The relationship between **edge length $a$** and **atomic radius $r$** in a **body-centred cubic (bcc)** unit cell is:Read the answer and worked solution →**Packing efficiency** of fcc (and hcp) close-packed structures is:Read the answer and worked solution →Packing efficiency of a simple cubic (sc) structure is:Read the answer and worked solution →The ratio of **tetrahedral voids** to **atoms** in a close-packed structure (fcc or hcp) is:Read the answer and worked solution →The ratio of **octahedral voids** to **atoms** in a close-packed structure is:Read the answer and worked solution →Fuse corner shares into one atomRead the answer and worked solution →Drag each clue to its cubic cellRead the answer and worked solution →Order the atomic models as they were proposedRead the answer and worked solution →Match each scientist to their modelRead the answer and worked solution →Match each model to what it could NOT explainRead the answer and worked solution →True or false: Rutherford's modelRead the answer and worked solution →

Worked practice questions

Crystalline solids are characterised by:

  1. A short-range ordered arrangement of particles
  2. A long-range, regularly repeating arrangement of particles
  3. No definite shape
  4. The absence of definite melting point
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Correct answer: B. A long-range, regularly repeating arrangement of particles

Crystalline solids have a long-range, periodic arrangement of constituent particles. NaCl, diamond, ice, metals at usual conditions are crystalline. Amorphous solids (glass, rubber) lack long-range order. They show only short-range order (option A), no definite melting point, and fracture along irregular surfaces. Crystallinity is what gives sharp X-ray diffraction patterns and well-defined melting points.

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Which of the following arrangements is in correct order of increasing electronegativity (Pauling scale)?

  1. F < O < N < C
  2. N < C < O < F
  3. C < N < O < F
  4. O < F < N < C
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Correct answer: C. C < N < O < F

Electronegativity increases across a period and decreases down a group. The Pauling-scale values for period 2 nonmetals: - C: 2.55 - N: 3.04 - O: 3.44 - F: 3.98 (highest of any element) So the correct ascending order is **C < N < O < F**. Option A reverses everything. Option C breaks the trend by putting F before O. Memory aid: "FONClBrISCHP" is the electronegativity ladder from highest to lowest among common nonmetals (F first, P last among this set).

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**Crystalline solids** typically have:

  1. No definite arrangement of particles
  2. Long-range order, sharp melting points, anisotropic properties (except cubic)
  3. Always isotropic properties
  4. Particles in random arrangement
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Correct answer: B. Long-range order, sharp melting points, anisotropic properties (except cubic)

**Crystalline solids:** regular, periodic arrangement over long range sharp melting point; anisotropic properties (except cubic). **Examples:** NaCl, diamond, graphite, metals.

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More Chemistry topics

Ideal and Non-Ideal SolutionsIdeal SolutionsNon-Ideal SolutionsReactions in Aqueous SolutionElectrochemistryElectrochemical SeriesCoordination CompoundsSolutions