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Solid State MCQ For B.Sc IInd Semester, 1) In solid the constituent particles may be, a) Atoms, b) Ions, c) Molecules, d) Any one of the above three, 2) A single substance that exists in two or more, form is called, a) Isomorphous, b) Amorphous, c) Polymorphous, d) Mono Morphous, 3) Graphite and Diamond is a, a) Covalent crystal, b) Metallic crystal, c) ionic crystal, d) molecular crystal, 4) The ratio of close packed atom to tetrahedral, holes in the cubic packing is, a) 1:1, b) 2:1, c) 1:2, d)1:3, 5) The major binding force of diamond is, a) Ionic bond, b) dipole- dipole induced attraction, c) dipole- dipole attraction, d) covalent bond., 6) The major binding force in silicon is a, a) Ionic bond, b) dipole-dipole induced attraction, c) dipole-dipole attraction, d) covalent bond, 7) The major binding force in graphite is, a) Ionic bond, b) London force, c) hydrogen bond, d) covalent bond, 8) The number of tetrahedral sites per sphere in, CCP structure is,, a) 1, b) 2, c) 3, d) 4, 9) Total number of octahedral sites in FCC, structure is,, a) 1, b) 2, c) 3, d) 4, 10) The packing efficiency for a body centred, cubic structure is,, a) 0.42, b) 0.53, c) 0.68, d) 0.82, 11) Due to the frenkel defect the density of the, ionic solid, a) Increases, b) decreases, c) remains constant, d) fluctuates, 12) An ionic crystal lattice has r+/r- radius ratio, of 0.524.its coordination number is, a) 2, b) 4, c) 6, d) 8, 13) An ionic compound AxBy occurs in FCC type, crystal structure with B ion at the centre of each, face and A ion occupying corners of the cube give, the formula of AxBya) AB3, b) AB4, c) A3B, d) A4B, 3|Page, , 14) In crystalline solid few of the cations moved, from their positions into the interstitial position., The defect is called as, a) Interstitial, b) Frenkel, c) Schottky, d) line defect, 15) Semi conductor are manufactured by the, addition of impurities of, a) p- block elements, b) actinoids, c) lanthanoids, d) s- blocks elements, 16) Which is not true about the solid state?, a)They have definite shape and volume, b)They have high density and low compressibility, c)They have high attractive force b/w the molecule, d)They have high vapour pressure, 17) The melting point is that temperature at, which, a) Solid and liquid have same vapour pressure, b) Solid and liquid do not co-exist at equilibrium, c) Vapour pressure is equal to the 1 atm pressure, d) None of the above, 18) Amorphous solid do not have, a) Sharp melting point, b) Characteristic geometry shapes, c) Regularity of the structure, d) All of these, 19) A crystalline solid has, a) Definite geometrical shapes, b) Flat faces, c) Sharp edges, d) All of these, 20) Amorphous substances are isotropic because, of, a) They have same value of any property in all, directions, b) They have different values of the physical, properties in different directions, c) They have definite geometrical shape, d) None of the above., 21) The element of symmetry is, a) Plane of symmetry, b) Axis of symmetry, c) Centre of symmetry, d) All of these, 22) The amorphous solid among the following is, a) Table salt, b) Diamond, c) Plastic, d) Graphite, 23) A crystalline solid does not have one of the, following properties. It is, a) Anisotropy, b) Sharp melting points, c) Isotropy, d) Definite geometry, 24) For tetragonal crystal system, which of the, following is not true?, a) a = b ≠ c, b) a ≠ b ≠ c, c) α = β = γ = 900, d) None of these, 25) For a orthorhombic crystal system, which of, the following is correct option?, a) a ≠ b ≠ c, b) a = b ≠ c, c) α = β ≠ γ = 900, d) None of these, , Excellent B.Sc. Classes, +91-9452524699, , By. Mr. Shubham Singh

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Solid State MCQ For B.Sc IInd Semester, 26) NaCl, CsCl are the example of the, a) Cubic crystal system, b) Tetragonal crystal system, c) Orthorhombic crystal system, d) Rhombohedral system, 27) The total number of the atom in a body, centred cubic unit cell is, a) 1, b) 2, c) 3, d) 4, 28) If there are 4 atoms in a unit cell in a cubic, system ,it is an example of, a) Simple cubic unit cell, b) Tetragonal crystal system, c) Face centred cubic unit cell, d) None of these, 29) Which is incorrect for hexagonal crystal, system, a) a=b=c, b)a=b≠c, 0, 0, c)α=β=90 γ=120, d)none of these, 30) The coordination number of the Na+, in NaCl crystal is, a) 2, b) 4, c) 6, d) 8, 31) The coordination number of the body centred, cubic lattice is, a) 2, b) 4, c) 6, d) 8, 32) The Bragg’s equation for the diffraction of the, X-ray is, a) nλ=2d2sinθ, b) nλ=2dsinθ, c) nλ=2dsin2θ, d) nλ=dsinθ, 33) In Bragg’s equation nλ=2dsinθ, n represents, a) The number of moles, b) The principal quantum number, c) The Avogadro’s number, d) The order of reflection, 34) The change in enthalpy that occurs when one, mole of a solid crystalline substance is formed, from the gaseous ions, a) Lattice energy, b) Ionic energy, c) Born- Haber cycle, d) Crystalline energy, 35) In cubic close packed (CCP) pattern of a, metallic crystal, the coordination number is, a) 12, b) 8, c) 6, d) 4, 36) In an ionic crystal, a cation and an anion leave, the lattice to cause two vacancies. This defect is, called, a) Schottky defect, b) Frenkel defect, c) Interstitial defect, d) None of these, 37) Which of the following defect is generally, found in sodium chloride & caesium chloride?, a) Schottky defect, b) Frenkel defect, c) Interstitial defect, d) None of these, 4|Page, , 38) In frenkel defect,, a) Some of the lattice site vacant, b) An ion occupies interstitial position, c) Some of the cation are replaced by foreign ions, d) None of the above, 39) A device used to convert light energy into, electrical energy is called, a) A semiconductor, b) A solar cell, c) An irreversible cell, d) An electrochemical cell, 40) For an ionic crystal of formula AX, the ratio, lies between 0.732 and 0.414. Its Coordination, number is, a) 4, b) 6, c) 8, d) 12, 41) The radius ratio in an ionic crystal lies, between 0.723-1.000, the coordination number is, a) 3, b) 4, c) 6, d) 8, 42) The permitted coordination number in an, ionic crystal is 6, the arrangements of anions, around the cation will be, a) Plane triangular, b) tetrahedral, c) octahedral, d) body centred cubic, 43) A solid AB has the NaCl structure. if radius of, the cation is 120 pm , the minimum value of, radius of the anion B will be, ., a), b), ., , ., , c), d), ., 44) The number of atom per cell in a simple cubic,, FCC and BCC are, a) 1,2,3, b) 1,4,2, c) 4,2,1, d) 2,4,1, 45) In a crystal, the atoms are located at the, position where potential energy is, a) Maximum, b) Zero, c) Minimum, d) Infinite, 46) Potassium crystalline in a bcc structure the, coordination number of potassium in potassium, metal is, a) 2, b) 4, c) 6, d) 8, 47) In an ionic crystal of general formula AX, the, coordination number is six. The value of radius, ratio is in the range, a) 0.155-0.215, b) 0.215-0.414, c) 0.414-0.732, d) 0.732-1, 48) The number of atoms in a primitive unit cell is, a) 1, b) 6, c) 8, d) 4, 49) The number of atoms in a unit cell of an fcc is, a) 2, b) 6, c) 8, d) 4, , Excellent B.Sc. Classes, +91-9452524699, , By. Mr. Shubham Singh

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Solid State MCQ For B.Sc IInd Semester, 50) NaCl is an example of, a) Covalent solid, b) Metallic solid, c) Ionic solid, d) Molecular solid, 51) Which of the following defects results in the, decrease density of crystal?, a) Schottky defect, b) Frenkel defect, c) Interstitial defect, d) Impurity defect, 52) Which of the following is the non crystalline, solid?, a) Rubber, b) Zinc sulphide, c) Mercury sulphide, d) Lead iodide, 53) Particles of the quarts are packed by, a) Ionic bonds, b) Van der Waal’s force, c) Hydrogen bonds, d) Covalent bonds, 54) LiF is an example of, a) Covalent crystal, b) Metallic crystal, c) Ionic crystal, d) Molecular crystal, 55) Glass, rubber and plastics are-----------a) Long-range order, b) Amorphous solids, c) In geometric form, d) None of these, 56) A cubic crystal possesses a total of -------------elements of symmetry., a) 20, b) 23, c) 22, d) 12, 57) There are ------------ crystal systems., a) 7, b) 5, c) 9, d) 3, 58) The indices used to denote the direction of a, plane of crystal are----a) Rational indices, b) Miller indices, c) Bragg's indices, d) none of the above, 59) The diffraction of X-rays by crystal was, discovered by-------------,, a) Braggs, b) Laue, c) Bebye-Scherrer, d) None of these, 60) The Miller indices are often used in the area of, a) Amorphous substances, b) Ionic crystal, c) Single crystal, d) Hydrogen crystal, 61) “The intercept of any face of a crystal along, the crystallographic axes are either equal to unit, intercepts (a, b, c) or simple whole number, multiples of them.” It is the statement of -a) Law of symmetry, b) Law of constancy of interfacial angles, c) Law of rational indices, d) Bragg's law, 62) The law of constancy of interfacial angles was, given by a) Braggs, b) Law, c) Miller, d) Steno, 63) The reciprocals of the intercepts made by a, plane with crystallographic axes are calleda) Weiss indices, b) Miller indices, c) Bragg indices, d) Laue indices, 5|Page, , 64) Sodium metal crystallizes in a body centred, cubic lattice with a unit cell edge of 4.29 Å. The, radius of sodium atom is approximately, a) 5.72 Å, b) 0.93 Å, c) 1.86 Å, d) 3.22 Å, 65) An element having an atomic radius of 0.14, nm crystallizes in an FCC unit cell. What is the, length of a side of the cell?, a) 0.96 nm, b) 0.4 nm, c) 0.24 nm, d) 0.56 nm, 66) In a face centred cubic lattice, atom A, occupies the corner positions and atom B occupies, the face centre positions. If one atom of B is, missing from one of the face centred points, the, formula of the compound is :a) A2B3, b) A2B5, c) A2B, d) AB2, 67) In a monoclinic unit cell, the relation of sides, and angles are respectively, a) a ≠ b ≠ c and α ≠ β ≠ γ ≠ 900, b) a ≠ b ≠ c and β = γ = 900 ≠ α, c) a = b ≠ c and α = β = γ = 900, d) a ≠ b ≠ c and α = β = γ = 900, 68) How many times is the number of octahedral, voids as compared to tetrahedral voids ?, a), 4, b), 8, c), 2, d), 0.5, 69)Number of atoms per unit cell in scc, bcc and, fcc are _____, _____ and _____ respectively., a), 1, 2, 3, b), 4, 1, 2, c), 1, 2, 4, d), 2, 1, 4, 70) For the structure of crystal, if atoms,, molecules or ions are associated with it, then their, _____ part is occupied by corners, _____ part by, edges of sides and _____ part by faces., a) , ,, b), , ,, c) , ,, d) , ,, 71)In a unit cell, the relation between the edge of, the cube (a) and the radius of the particle (r) in, fcc, bcc and simple cubic lattice is respectively __ ., a) 2r , , 2√2r, b) 2√2r , , 2r, √, , c) 2√2r ,2r,, , √, , √, , d), , √, , , 2√2r, 2r, , 72) Total lattice points for Edge CC and End CC, a) 20, 10, b) 16, 8, c) 20, 4, d) 16, 20, 73) Which of the following have cos(Centre of, symmetry), a) Tetragonal, b) Cubic, c) Hexagonal, d) Monoclinic, , Excellent B.Sc. Classes, +91-9452524699, , By. Mr. Shubham Singh

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Solid State MCQ For B.Sc IInd Semester, 74) Amorphous solids may be regarded as -----a) solids with real sense, b) liquids with real sense, c) super cooled liquids, d) Substances with definite m.p., 75) Bravais lattices depend on the shapes of ------a) lattice, b) cubic crystal, c) unit cell, d) none of these, 76) Solid CO2 is an example of the crystal type:, a) Ionic, b) Covalent, c) Metallic, d) Molecular, 78) In a crystalline solid, anions B are arranged in, CCP lattice and cations A occupy 50% of the, octahedral voids and 50% of the tetrahedral, voids. What is the formula of the solid:, a) AB, b) A3B2, c) A2B2, d) A2B3, 79) Formula of the compound is -, , a) CaTiO3, b) Ca2TiO3, c) CaTi3O18, d) Ca2Ti20O, 80) An alloy of Copper, Silver and Gold is found, to have Copper constituting the C.C.P lattice. If, Silver atoms occupy the edge centres and Gold is, present at body centre , the alloy will have, the formula:, a) Cu4Ag2Au, b) Cu4Ag4Au, c) Cu4Ag3Au, d) CuAgAu, 81) Calculate the miller indices of crystal planes, which cut through the crystal axis at (2a, –3b, –, 3c):, a) (3, 2, 2), b) (3, –2, –2), c) (1, 2, 2), d) (1, –2, –2), 82) Which one of the following plane will show, allowed reflection for any FCC:, a) (100), b) (110), c) (111), d) None of these, 83) A metal crystallizes with a face-centered cubic, lattice. The edge of the unit cell is 408 pm. The, diameter of the metal atom is, a) 144 pm, b) 204 pm, c) 288 pm, d) 408 pm, 84) For a face centered cubic lattice, the miller, indices for the first Bragg’s (smallest Bragg, angle):, a) 002, b) 110, c) 001, d) 111, 6|Page, , 85) The percentage of void in BCC lattice is:, a) 59%, b) 68%, c) 32%, d) 46%, 86) Which one of the following plane will show, allowed reflection for any BCC:, a) (100), b) (110), c) (111), d) None of these, 87) Find the angle between 110 & 111 Plane, a) 300, b) Less than 300, 0, c) More than 30, d) None of these, 88)Find the angle between 100 & 010 Plane, a) 450, b) 900, 0, c) 180, d) None of these, 89) Crystal A diffracts from 111 and 200 plane, but not from 110 plane while the crystal B, diffracts from 110 and 200 plane but not from the, 111 plane . Form the above , we may conclude a) A has FCC lattice while B has BCC lattice, b) A has BCC lattice while B has FCC lattice, c) A and B both have FCC Lattice, d) A and B both have BCC lattice, 90) In a cubic crystal, the (111) and (222), reflections are observed, but not the (001), reflection. The Bravais lattice is a) BCC, b) FCC, c) SCC, d) None of the Above, 91) What is the angle at which first order, diffraction occur in an X ray of wavelength 3.08 A, by the atoms of crystal , given that the inter, planar distance is 1.54A ., a) 450, b) 900, 0, c) 18, d) 150, 92) An element with density 10 g cm-3 forms a, cubic cell with edge length of 3 X 10-8 cm. What is, the nature of cubic unit cell if the atomic mass of, the element is 81 g mol?, a) BCC, b) FCC, c) SCC, d) DCC, , For Answers Scan this QR Code……, , Excellent B.Sc. Classes, +91-9452524699, , By. Mr. Shubham Singh