TestUstad

The crystal system having a = β ≠ c and α = β = γ = 90° is:

Correct answer: B. Tetragonal

  • A. Hexagonal
  • B. Tetragonal
  • C. Monoclinic
  • D. Triclinic

Explanation

In the Tetragonal crystal system: The three crystallographic axes are all perpendicular to each other (α = β = γ = 90°). Two of the axes (a and b) have the same length (a = b), and these are perpendicular to each other. The third axis (c) has a different length (c ≠ a or b). So, in the Tetragonal crystal system, the unit cell is a rectangular prism with two edges of equal length (a and b) and one edge of a different length (c), with all right angles between the edges.

Written and checked by , M.Phil ChemistryLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Crystalline Solids

Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.

Practise Solids

357 free Solids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Solids testAll Solids MCQs

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Chemistry questions like this

Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Lecturer Chemistry Test Chemistry80 MCQsSubject Specialist Chemistry Test Chemistry80 MCQsDUHS Chemistry45 MCQsETEA MDCAT Chemistry45 MCQsKMU Chemistry45 MCQsMDCAT Chemistry45 MCQsNUMS Chemistry40 MCQsECAT Chemistry30 MCQsETEA Engineering Admission Test Chemistry30 MCQsGIKI Chemistry30 MCQsNED Chemistry30 MCQsNET Chemistry30 MCQsPIEAS Chemistry30 MCQsBSN Entry Test Chemistry25 MCQs

More Crystalline Solids questions

Which type of magnetic behaviour is shown by magnetite (Fe3O4)?

ABCABC... type of arrangement of different layers, in a closest packed structure is called:

If Z is the number of atoms in a unit cell that represents the closest packing sequence ABC ABC ... , the number of tetrahedral voids in the unit cell is equal to:

In a solid lattice, the cation has left a lattice site and is located at an interstitial position, the lattice defect is:

Which of the following statement(s) is/are correct? A. Ferromagnetic substances are permanently magnetised. B. AgBr shows both Schottky and Frenkel defects. C. One tetrahedral voids per atom is present in HCP structure.

Cubic void is present in: