Solids MCQs with Answers
Transition temperature is shown by which of the following pairs:
Isomorph and polymorph
Allotrope and polymorph
Isomorph and allotrope
All of these
Lattice energy decreases with the increase in size of ion because oppositely charged ions
Have close packing
Have low empty spaces
Becomes less tight
Have strong electrostatic forces
Ionic solids are characterized by:
Low melting point
Good conductivity in solid state
High vapor pressure
Solubility in polar solvent
Which solids are called true solids?
Metallic
Amorphous
Crystalline
Vitreous
Which ionic solid has highest lattice energy
Which of the following intermolecular forces are present in solid iodine
Dipole - Dipole forces
London dispersion forces
Hydrogen bonding
Debye forces
Which of the following is not amorphous solid
Glass
Table salt
Glue
Rubber
Transition temperature of Sulphur is
Which of the following is isotropic property
Refractive index
Coefficient of thermal expansion
Cleavage
Metallic conduction
When an element exist in more than one crystalline forms, it is known as
Anisotropy
Isomorphism
Allotropy
Polymorphism
A solid may be made up of
Atoms
Ions
Molecues
all of these
Which one has the highest melting point and boiling point
Ionic crystal
Molecular crystal
Covalent crystal
Metallic crystal
In a crystal, the atoms are located at the position of
Zero P.E.
Infinite P.E.
Minimum P.E.
Maximum P.E.
Which of the following is anisotropic
Hydrogen
Quartz
Water
Rubber
Crystalline parts of otherwise amorphous solids are known as
Allotrope
Crystallites
Isomorph
Polymorph
Coinage metals are Cu, Ag and Au and they have _______ crystal system.
Cubic
Hexgonal
Tetragonal
Trigon
In crystal structure of NaCl, the arrangement of Cl- ions is
Face centered cubic
Body centered cubic
Simple Cubic
Hexagonal
In a crystal lattice the correct sequence of bond angles is
bc=α, ca=β, ab=γ
bc=β, ca=α, ab=γ
bc=γ, ca=β, ab=α
All are possible
Total unit cell dimensions are
Cubic crystal system has the following unit cell dimensions (!= represents not equal )
a=b=c and 𝛼=𝛽=𝛾=90∘
a=b!=c and 𝛼=𝛽=𝛾=90∘
a!=b!=c and 𝛼=𝛽=𝛾=90∘
a=b!=c and 𝛼=𝛽=90∘, 𝛾=120∘
The crystalline form of white tin is:
Cubic
Hexagonal
Tetragonal
All of these
Molecular crystals are generally:
Hard
Very hard
Soft
Always polar
The crystals formed due to London dispersion forces are:
Ionic
Molecular
Covalent
Metallic
The number of Cl⁻ ions per unit cell of a simple cubic lattice at the corners is:
Which of the following is incorrect about the structure of iodine (I₂)?
Face-centered cubic
Metallic appearance
I-I(g)>I-I(s)
I-I(g)<I-I(s) bond length
The coordination number of each ion in NaCl is:
The best conductors of electricity are:
Ionic solids
Metallic solids
Molecular solids
Covalent solids
Independent molecule of NaCl may exist in
Solid phase
Liquid phase
Vapour phase
All of the above
Which of the following is an example of polar molecular solid
Naphthalene
Dry ice
Iodine
Sugar
Dry ice (solid CO₂) is an example of:
Covalent crystal
Metallic crystal
Ionic crystal
Molecular crystal
The coordination number of Na⁺ in NaCl crystal is:
In the structure of NaCl, each sodium ion is surrounded by how many chloride ions?
Which of the following has the highest lattice energy?
The electrical conductivity of graphite is greater in one direction than in another due to: (MDCAT 2016)
Isomorphism
Anisotropy
Cleavage plane
Symmetry
In diamond, each of the four outer electrons on every carbon atom is involved in covalent bonding. This means that there are no free electrons available. Which property does this explain? (SET 2019)
Diamond does not conduct heat and electricity
Diamond is very hard
Diamond has a high refractive index
Diamond cuts diamond
Graphite is one of the allotropic forms of carbon. It is:
Isotropic
Anisotropic
A good conductor of electricity
Both Anisotropic and A good conductor of electricity
Which of the following substances has a sharp melting point? (ETEA 2019)
Gemstone
Glass
Coal tar
Diamond
Lattice energy is also called:
Energy of affinity
Bond energy
Potential energy
Crystal energy
Other Chemistry Topics MCQs
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