Solid State TestSolid State 43 Created on July 05, 2023 By Arvind SirSolid State English Medium 1 / 30The structure of sodium chloride crystal is – Octahedral Body centred cubic lattice Square planar Face centred cubic lattice 2 / 30Close packing is maximum in the crystal fcc bcc None of these Simple cube 3 / 30The maximum percentage of available volume that can be filled in a face centred cubic system by an atom is – 34% 26% 74% 68% 4 / 30A solid is made of two elements X and Z . The atom Z are in C.C.P. arrangement while atoms X occupy all the tetrahedral sites. What is the formula of the compound- X2Z XZ Unpredictable XZ2 5 / 30Which of the following does not exhibit frenkel defect CsCl ZnS AgBr AgCl 6 / 30Graphite is an example of - Covalent Solid Molecular Solid Metallic crystal Ionic Solid 7 / 30Bragg’s law in given by the equation 𝑛 = 2θ sin θ 𝑛 θ 2 = d sin 𝜃 2 𝑛 = 2𝑑 sin 𝜃 2𝑛 = 𝑑 sin 𝜃 8 / 30In a face centred cubic unit cell, an atom at the face centre is shared by – 4 unit cells 6 unit cells 1 unit cells 2 unit cells 9 / 30Total volume of atoms present in BCC unit cell of metal is (r=atomic radius) 12 𝜋𝑟3/3 20 𝜋𝑟3/3 24 𝜋𝑟3/3 8 𝜋𝑟3/3 10 / 30The no. of atoms per unit cell in B.C.C & F.C.C is respectively – 1,3 8, 10 1,2 2,4 11 / 30The rank (effective atoms per unit cell) of a cubic unit cell is 4. The type of cell as – Face Centred Primitive Body centred None of these 12 / 30Which of the following defect, if present lowers the density of the crystal – Interstitial cation Constitution of F- Centers Schottky Frenkel 13 / 30In Corundum, oxide ions are arrangement in hcp arrangement and aluminum ion occupy two third of the octahedral Its formula is – Al2O3 Al3O4 AlO2 Al2O4 14 / 30The total number of Bravais lattice in a crystal is 14 7 23 32 15 / 30Which among the following will show anisotropy – Barium Chloride Paper Wood Glass 16 / 306 : 6 of NaCl coordination changes to 8: 8 coordination on – no effect on coordination number increase in temperature both (a) and (b) Applying high P 17 / 30The number of atoms present in a simple cubic unit cell are – 3 4 2 1 18 / 30The unit cell of a metallic element of atomic mass 108 and density 5g/cm3 is a cube with edge length of 409 pm. The structure of the crystal lattice is – hcp None of these bcc fcc 19 / 30In a face centred cubic arrangement of A & B atoms whose A atoms are at the corner of the unit cell & B atoms at the face One of the A atom is missing from one corner in unit cell. The simplest formula of compound is– A7/8B3 AB3 A7B3 A7B24 20 / 30Which is amorphous solid – Glass All of thise Rubber Plastic 21 / 30The vacant space in B.C.C unit cell is – 32% 23% 46% 10% 22 / 30The empty space in this HCP unit cell- 26% 32% 47.6% 74% 23 / 30Crystals can be classified into......... basic crystal habits 7 14 4 3 24 / 30In a body centred cubic arrangement, the number of atoms per unit cell is – 1 4 2 8 25 / 30The number of atoms in 100 g of fcc crystal with density (d) = 10 g cm-3 and edge length 200 pm is equal to 2x1025 1x1025 3x1025 5x1024 26 / 30In a compound, atoms of element Y form ccp lattice and those of element X occupy 2/3rd of tetrahedral The formula of the compound will be – X2Y3 X4Y3 X2Y X3Y4 27 / 30In a close pack array of N spheres, the number of tetrahedral holes are – N/2 N 4N 2N 28 / 30How many atoms are there in a unit cell of Mg which forms hexagonal crystals– 12 4 6 8 29 / 30Doping of silicon (Si) with boron (B) leads TO Insulator p-type semiconductor n-type semiconductor Metal 30 / 30What is the simplest formula of a solid whose cubic unit cell has the atom A at each corner, the atom B at each face centre and a C atom at the body centre– AB3C A2BC AB2C ABC3 Your score isThe average score is 45% LinkedIn Facebook VKontakte 0% Restart quiz