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Objective Questions

Latest CUET PG Material Science Exam Question (Objective Questions), MCQ in English

Subjects : Material Science

Question Bank CUET PG Material Science Exam - English
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Material Science

Question 1Single Answer
What is the coordination number of a face-centered cubic (FCC) lattice?
  1. A
    6
  2. B
    8
  3. C
    12
  4. D
    14
Question 2Single Answer
Which crystal system has all axes of equal length and all angles equal to 90°?
  1. A
    Cubic
  2. B
    Tetragonal
  3. C
    Orthorhombic
  4. D
    Monoclinic
Question 3Single Answer
How many atoms are present in a unit cell of a body-centered cubic (BCC) structure?
  1. A
    1
  2. B
    8
  3. C
    4
  4. D
    2
Question 4Single Answer
What is the packing efficiency of a simple cubic lattice?
  1. A
    68%
  2. B
    52.4%
  3. C
    74%
  4. D
    80%
Question 5Single Answer
Which type of crystal structure is exhibited by diamond?
  1. A
    Diamond cubic
  2. B
    BCC
  3. C
    FCC
  4. D
    HCP
Question 6Single Answer
What is the Bravais lattice type for a hexagonal close-packed (HCP) structure?
  1. A
    Body-centered hexagonal
  2. B
    Face-centered hexagonal
  3. C
    Simple hexagonal
  4. D
    Base-centered hexagonal
Question 7Single Answer
Which plane in a cubic crystal has the highest atomic density?
  1. A
    (100)
  2. B
    (111)
  3. C
    (110)
  4. D
    (200)
Question 8Single Answer
What is the Miller index of a plane parallel to the x-axis and intersecting y and z axes at 1 unit each?
  1. A
    (100)
  2. B
    (111)
  3. C
    (011)
  4. D
    (001)
Question 9Single Answer
How many nearest neighbors does an atom have in a hexagonal close-packed (HCP) structure?
  1. A
    6
  2. B
    12
  3. C
    10
  4. D
    8
Question 10Single Answer
Which crystal structure has the highest packing efficiency?
  1. A
    Simple cubic
  2. B
    FCC
  3. C
    BCC
  4. D
    Diamond cubic
Question 11Single Answer
Which type of bonding is primarily responsible for the high melting point of NaCl?
  1. A
    Covalent
  2. B
    Metallic
  3. C
    Ionic
  4. D
    Van der Waals
Question 12Single Answer
What type of bonding is observed in diamond?
  1. A
    Ionic
  2. B
    Van der Waals
  3. C
    Metallic
  4. D
    Covalent
Question 13Single Answer
Which bonding type involves the sharing of electrons between atoms?
  1. A
    Ionic
  2. B
    Van der Waals
  3. C
    Metallic
  4. D
    Covalent
Question 14Single Answer
What is the primary bonding in metals like copper and aluminum?
  1. A
    Ionic
  2. B
    Metallic
  3. C
    Covalent
  4. D
    Van der Waals
Question 15Single Answer
Which type of bonding is weakest among the following?
  1. A
    Ionic
  2. B
    Covalent
  3. C
    Van der Waals
  4. D
    Metallic
Question 16Single Answer
What type of bonding is responsible for the layered structure of graphite?
  1. A
    Ionic
  2. B
    Covalent
  3. C
    Metallic
  4. D
    Van der Waals
Question 17Single Answer
Which bonding type is characterized by delocalized electrons?
  1. A
    Ionic
  2. B
    Covalent
  3. C
    Metallic
  4. D
    Van der Waals
Question 18Single Answer
What type of bond exists between molecules in solid argon?
  1. A
    Ionic
  2. B
    Covalent
  3. C
    Van der Waals
  4. D
    Metallic
Question 19Single Answer
What is lattice energy defined as?
  1. A
    Energy required to form a crystal lattice
  2. B
    Energy released when gaseous ions form a solid lattice
  3. C
    Energy to break covalent bonds
  4. D
    Energy to melt a solid
Question 20Single Answer
Which factor increases the lattice energy of an ionic compound?
  1. A
    Larger ionic radius
  2. B
    Lower ionic charge
  3. C
    Lower coordination number
  4. D
    Higher ionic charge
Question 21Single Answer
What is the Madelung constant dependent on?
  1. A
    Ionic charge
  2. B
    Crystal structure
  3. C
    Temperature
  4. D
    Bond length
Question 22Single Answer
Which ionic compound has the highest lattice energy?
  1. A
    NaCl
  2. B
    KCl
  3. C
    CaO
  4. D
    MgO
Question 23Single Answer
What is the Madelung constant for a NaCl lattice?
  1. A
    2.201
  2. B
    1.638
  3. C
    1.747
  4. D
    1.923
Question 24Single Answer
Which parameter is inversely proportional to lattice energy?
  1. A
    Ionic charge
  2. B
    Coordination number
  3. C
    Interionic distance
  4. D
    Madelung constant
Question 25Single Answer
What does the Born-Landé equation calculate?
  1. A
    Cohesive energy
  2. B
    Lattice energy
  3. C
    Binding energy
  4. D
    Activation energy
Question 26Single Answer
Which crystal structure has a higher Madelung constant than NaCl?
  1. A
    CsCl
  2. B
    CaF
  3. C
    ZnS
  4. D
    None of the above
Question 27Single Answer
What is the unit of lattice energy?
  1. A
    J/mol
  2. B
    kJ/mol
  3. C
    eV
  4. D
    kcal
Question 28Single Answer
Which compound has a lower lattice energy than NaF?
  1. A
    NaCl
  2. B
    MgF
  3. C
    LiF
  4. D
    KF
Question 29Single Answer
What is the purpose of the Born-Haber cycle?
  1. A
    To calculate covalent bond energy
  2. B
    To measure cohesive energy
  3. C
    To determine lattice energy of ionic compounds
  4. D
    To find melting point
Question 30Single Answer
Which step in the Born-Haber cycle involves the sublimation of a metal?
  1. A
    Enthalpy of sublimation
  2. B
    Electron affinity
  3. C
    Enthalpy of formation
  4. D
    Ionization energy
Question 31Single Answer
What is the sign of electron affinity in the Born-Haber cycle for halogens?
  1. A
    Negative
  2. B
    Positive
  3. C
    Zero
  4. D
    Variable
Question 32Single Answer
Which energy term is always positive in the Born-Haber cycle?
  1. A
    Ionization energy
  2. B
    Electron affinity
  3. C
    Lattice energy
  4. D
    Enthalpy of formation
Question 33Single Answer
Which step in the Born-Haber cycle involves breaking a diatomic molecule?
  1. A
    Sublimation
  2. B
    Ionization
  3. C
    Dissociation
  4. D
    Electron affinity
Question 34Single Answer
What does the Born-Haber cycle assume about the ionic compound?
  1. A
    It is purely ionic
  2. B
    It is purely covalent
  3. C
    It is metallic
  4. D
    It is amorphous
Question 35Single Answer
Which term in the Born-Haber cycle is usually exothermic for ionic compounds?
  1. A
    Lattice energy
  2. B
    Ionization energy
  3. C
    Dissociation energy
  4. D
    Sublimation energy
Question 36Single Answer
What is the enthalpy change for the formation of gaseous ions in the Born-Haber cycle?
  1. A
    Ionization energy + Electron affinity
  2. B
    Lattice energy
  3. C
    Enthalpy of formation
  4. D
    Dissociation energy
Question 37Single Answer
Which compound requires a Born-Haber cycle with multiple ionization energies?
  1. A
    MgCl
  2. B
    KBr
  3. C
    NaCl
  4. D
    LiF
Question 38Single Answer
What is cohesive energy defined as?
  1. A
    Energy to break a crystal into atoms
  2. B
    Energy to form a crystal lattice
  3. C
    Energy to ionize an atom
  4. D
    Energy to melt a solid
Question 39Single Answer
Which type of bonding typically results in the highest cohesive energy?
  1. A
    Ionic
  2. B
    Van der Waals
  3. C
    Metallic
  4. D
    Covalent
Question 40Single Answer
What is the cohesive energy of diamond primarily due to?
  1. A
    Ionic bonds
  2. B
    Metallic bonds
  3. C
    Covalent bonds
  4. D
    Van der Waals forces
Question 41Single Answer
Which material has the lowest cohesive energy?
  1. A
    NaCl
  2. B
    Graphite
  3. C
    Diamond
  4. D
    Aluminum
Question 42Single Answer
What is the relationship between cohesive energy and melting point?
  1. A
    Inversely proportional
  2. B
    No relation
  3. C
    Directly proportional
  4. D
    Exponentially related
Question 43Single Answer
Which factor increases the cohesive energy of a metal?
  1. A
    Larger atomic radius
  2. B
    Weaker metallic bonds
  3. C
    Lower coordination number
  4. D
    Higher electron delocalization
Question 44Single Answer
What is the cohesive energy of an ionic solid related to?
  1. A
    Lattice energy
  2. B
    Ionization energy
  3. C
    Electron affinity
  4. D
    Dissociation energy
Question 45Single Answer
Which solid has a higher cohesive energy than NaCl?
  1. A
    KCl
  2. B
    RbCl
  3. C
    CsCl
  4. D
    MgO
Question 46Single Answer
What is the cohesive energy of a van der Waals solid primarily due to?
  1. A
    Ionic interactions
  2. B
    Covalent bonds
  3. C
    Dipole-dipole interactions
  4. D
    Metallic bonds
Question 47Single Answer
Which property is directly influenced by cohesive energy?
  1. A
    Electrical conductivity
  2. B
    Thermal conductivity
  3. C
    Optical absorption
  4. D
    Hardness
Question 48Single Answer
What is binding energy in a solid?
  1. A
    Energy to remove an electron from an atom
  2. B
    Energy to break a covalent bond
  3. C
    Energy to ionize a molecule
  4. D
    Energy to hold atoms together in a lattice
Question 49Single Answer
Which factor decreases interatomic spacing in a crystal?
  1. A
    Weaker bonding
  2. B
    Higher temperature
  3. C
    Larger atomic radius
  4. D
    Stronger bonding
Question 50Single Answer
What is the ground state of an electron in a quantum system?
  1. A
    Lowest energy state
  2. B
    Highest energy state
  3. C
    Intermediate energy state
  4. D
    Unstable state
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