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12th Class Physics Chapter 17 MCQs with Answers

12th Class Physics Chapter 17 MCQs

Understand the Physics of Solids with 12th Class Physics Chapter 17 MCQs. Topics like crystalline structure, elasticity, and thermal properties are covered. Keywords like solids physics quiz, crystalline structure MCQs, and elasticity test ensure better visibility.

The study of the behavior of solids under the action of forces is called:
a) Solid mechanics
b) Solid state physics
c) Solid dynamics
d) Solid thermodynamics

Answer
a) Solid mechanics

The unit cell of a crystal lattice represents:
a) A single crystal
b) A repeating pattern in a crystal
c) The entire crystal lattice
d) A disordered arrangement of atoms

Answer
b) A repeating pattern in a crystal

Which of the following is an example of an amorphous solid?
a) Diamond
b) Graphite
c) Glass
d) Sodium chloride (NaCl)

Answer
c) Glass

The ability of a material to resist deformation under stress is called:
a) Elasticity
b) Plasticity
c) Ductility
d) Hardness

Answer
a) Elasticity

Which of the following statements about crystalline solids is true?
a) They have a disordered atomic arrangement
b) They have a definite and repeating pattern of atoms
c) They lack a well-defined melting point
d) They are also known as amorphous solids

Answer
b) They have a definite and repeating pattern of atoms

The energy required to break one mole of a solid material into individual atoms in the gas phase is called:
a) Lattice energy
b) Binding energy
c) Cohesive energy
d) Activation energy

Answer
c) Cohesive energy

The phenomenon of a solid material undergoing a gradual increase in length when subjected to a constant applied force is known as:
a) Elasticity
b) Plasticity
c) Creep
d) Hardness

Answer
c) Creep

The property of a material to retain its original shape after the removal of the applied force is called:
a) Elasticity
b) Plasticity
c) Ductility
d) Hardness

Answer
a) Elasticity

Which of the following is not a characteristic property of crystalline solids?
a) Anisotropy
b) Isotropy
c) Cleavage
d) Crystallography

Answer
b) Isotropy

Which type of bonding is responsible for the mechanical strength of metals?
a) Ionic bonding
b) Covalent bonding
c) Metallic bonding
d) Van der Waals bonding

Answer
c) Metallic bonding

The behavior of electrons in the valence band of a solid material determines its:
a) Color
b) Hardness
c) Electrical conductivity
d) Density

Answer
c) Electrical conductivity

Which of the following properties is not a mechanical property of solids?
a) Hardness
b) Brittleness
c) Electrical conductivity
d) Ductility

Answer
c) Electrical conductivity

The ability of a material to absorb energy without breaking is called:
a) Ductility
b) Toughness
c) Hardness
d) Fragility

Answer
b) Toughness

The temperature at which a solid material changes from a crystalline to an amorphous state is known as:
a) Melting point
b) Boiling point
c) Glass transition temperature
d) Sublimation point

Answer
c) Glass transition temperature

The measure of a material’s resistance to indentation or scratching is called:
a) Ductility
b) Toughness
c) Hardness
d) Fragility

Answer
c) Hardness

Which of the following materials is a good conductor of electricity due to its high electron mobility?
a) Rubber
b) Glass
c) Silicon
d) Diamond

Answer
c) Silicon

The temperature at which a solid material changes from a solid to a liquid state is known as:
a) Melting point
b) Boiling point
c) Glass transition temperature
d) Sublimation point

Answer
a) Melting point

Which of the following materials is a good insulator of electricity?
a) Copper
b) Aluminum
c) Glass
d) Graphite

Answer
c) Glass

The crystal lattice structure of diamond is based on which element?
a) Carbon
b) Silicon
c) Oxygen
d) Sodium

Answer
a) Carbon

Which type of solid material has a random arrangement of atoms and lacks a well-defined crystal lattice structure?
a) Crystalline solid
b) Amorphous solid
c) Polycrystalline solid
d) Single-crystal solid

Answer
b) Amorphous solid

Which of the following is not a characteristic of metallic bonding?
a) Delocalized electrons
b) High electrical conductivity
c) Brittle behavior
d) Ductility

Answer
c) Brittle behavior

The property of a material to be drawn into wires is known as:
a) Hardness
b) Ductility
c) Brittleness
d) Toughness

Answer
b) Ductility

What is the name of the process by which a solid material changes directly into a gaseous state without passing through the liquid state?
a) Sublimation
b) Melting
c) Evaporation
d) Condensation

Answer
a) Sublimation

Which type of solid material has a regular arrangement of atoms in a three-dimensional pattern?
a) Crystalline solid
b) Amorphous solid
c) Polycrystalline solid
d) Single-crystal solid

Answer
a) Crystalline solid

What is the name of the property that allows a material to undergo large deformations before fracturing?
a) Brittleness
b) Ductility
c) Toughness
d) Elasticity

Answer
b) Ductility

Which of the following is a type of mechanical defect in a crystal lattice?
a) Grain boundary
b) Glass transition temperature
c) Melting point
d) Sublimation point

Answer
a) Grain boundary

The property of a material to be hammered or beaten into thin sheets is known as:
a) Hardness
b) Ductility
c) Malleability
d) Toughness

Answer
c) Malleability

What is the name of the process by which a solid material changes directly from a gaseous state to a solid state without passing through the liquid state?
a) Sublimation
b) Melting
c) Evaporation
d) Condensation

Answer
a) Sublimation

Which of the following properties is a mechanical property of solids?
a) Electrical conductivity
b) Brittleness
c) Transparency
d) Refractive index

Answer
b) Brittleness

The arrangement of atoms in a crystal lattice can be described by:
a) Bravais lattice
b) Van der Waals forces
c) Lennard-Jones potential
d) Bohr’s model

Answer
a) Bravais lattice

The phenomenon of a solid material returning to its original shape after the removal of the applied stress is called:
a) Elasticity
b) Plasticity
c) Creep
d) Hardness

Answer
a) Elasticity

Which of the following materials is a good conductor of electricity due to its free electrons?
a) Plastic
b) Glass
c) Copper
d) Wood

Answer
c) Copper

The property of a material to withstand mechanical stress without permanent deformation is called:
a) Elasticity
b) Plasticity
c) Ductility
d) Hardness

Answer
a) Elasticity

The bending of light as it passes through different regions of a material with different refractive indices is known as:
a) Diffraction
b) Reflection
c) Dispersion
d) Refraction

Answer
d) Refraction

What is the name of the process by which a solid material changes from a liquid state to a gaseous state?
a) Sublimation
b) Melting
c) Evaporation
d) Condensation

Answer
c) Evaporation

The property of a material to be stretched or pulled without breaking is known as:
a) Hardness
b) Ductility
c) Malleability
d) Toughness

Answer
b) Ductility

Which of the following materials is an example of a good electrical insulator?
a) Aluminum
b) Silicon
c) Copper
d) Glass

Answer
d) Glass

The temperature at which a solid material changes from a solid to a gaseous state is known as:
a) Melting point
b) Boiling point
c) Glass transition temperature
d) Sublimation point

Answer
d) Sublimation point

Which type of solid material is composed of small crystalline regions or grains with different orientations?
a) Crystalline solid
b) Amorphous solid
c) Polycrystalline solid
d) Single-crystal solid

Answer
c) Polycrystalline solid

The property of a material to be hammered or beaten into thin sheets is known as:
a) Hardness
b) Ductility
c) Malleability
d) Toughness

Answer
c) Malleability

Which of the following materials is a good conductor of electricity due to its high electron mobility?
a) Rubber
b) Glass
c) Silicon
d) Diamond

Answer
c) Silicon

The temperature at which a solid material changes from a solid to a liquid state is known as:
a) Melting point
b) Boiling point
c) Glass transition temperature
d) Sublimation point

Answer
a) Melting point

Which of the following materials is a good insulator of electricity?
a) Copper
b) Aluminum
c) Glass
d) Graphite

Answer
c) Glass

The crystal lattice structure of diamond is based on which element?
a) Carbon
b) Silicon
c) Oxygen
d) Sodium

Answer
a) Carbon

Which type of solid material has a random arrangement of atoms and lacks a well-defined crystal lattice structure?
a) Crystalline solid
b) Amorphous solid
c) Polycrystalline solid
d) Single-crystal solid

Answer
b) Amorphous solid

Which of the following is not a characteristic of metallic bonding?
a) Delocalized electrons
b) High electrical conductivity
c) Brittle behavior
d) Ductility

Answer
c) Brittle behavior

The property of a material to be drawn into wires is known as:
a) Hardness
b) Ductility
c) Brittleness
d) Toughness

Answer
b) Ductility

What is the name of the process by which a solid material changes directly into a gaseous state without passing through the liquid state?
a) Sublimation
b) Melting
c) Evaporation
d) Condensation

Answer
a) Sublimation

Which type of solid material has a regular arrangement of atoms in a three-dimensional pattern?
a) Crystalline solid
b) Amorphous solid
c) Polycrystalline solid
d) Single-crystal solid

Answer
a) Crystalline solid

What is the name of the property that allows a material to undergo large deformations before fracturing?
a) Brittleness
b) Ductility
c) Toughness
d) Elasticity

Answer
b) Ductility

Which of the following materials is a good conductor of electricity due to its free electrons?
a) Plastic
b) Glass
c) Copper
d) Wood

Answer
c) Copper

The arrangement of atoms in a crystal lattice can be described by:
a) Bravais lattice
b) Van der Waals forces
c) Lennard-Jones potential
d) Bohr’s model

Answer
a) Bravais lattice

The phenomenon of a solid material returning to its original shape after the removal of the applied stress is called:
a) Elasticity
b) Plasticity
c) Creep
d) Hardness

Answer
a) Elasticity

Which of the following materials is an example of a good electrical insulator?
a) Aluminum
b) Silicon
c) Copper
d) Glass

Answer
d) Glass

The property of a material to withstand mechanical stress without permanent deformation is called:
a) Elasticity
b) Plasticity
c) Ductility
d) Hardness

Answer
a) Elasticity

The bending of light as it passes through different regions of a material with different refractive indices is known as:
a) Diffraction
b) Reflection
c) Dispersion
d) Refraction

Answer
d) Refraction

What is the name of the process by which a solid material changes from a liquid state to a gaseous state?
a) Sublimation
b) Melting
c) Evaporation
d) Condensation

Answer
c) Evaporation

The property of a material to be stretched or pulled without breaking is known as:
a) Hardness
b) Ductility
c) Malleability
d) Toughness

Answer
b) Ductility

Which of the following materials is an example of a good electrical conductor?
a) Rubber
b) Glass
c) Silicon
d) Copper

Answer
d) Copper

The temperature at which a solid material changes from a solid to a gaseous state is known as:
a) Melting point
b) Boiling point
c) Glass transition temperature
d) Sublimation point

Answer
d) Sublimation point

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