Free MCQs & Online Quiz Practice for Exams

Q: The liquid with highest rate of evaporation among the following is: (ETEA 2018)

A) Water

B) Ethyl alcohol

C) Ammonia

D) n-Pentane

Q: Bonding in H–F is stronger than in H₂O and NH₃. The highest boiling point among the three is of: (ETEA 2018)

A) HF

B) NH₃

C) H₂O

D) All have same boiling point

Q: Evaporation depends upon: (ETEA 2018)

A) Surface area

B) Temperature

C) Both (a) & (b)

D) None

Q: Which one of the following liquids is more volatile? (ETEA 2019)

A) Chloroform

B) Ether

C) Water

D) Glycerin

Q: Vapour pressure of a liquid does NOT depend on: (ETEA 2019)

A) Temperature

B) Intermolecular forces

C) Amount of liquid

D) Amount of solid dissolved in the liquid

Q: In ice the water molecules are bonded by: (ETEA 2019)

A) Ionic bonds

B) Hydrogen bonds

C) Covalent bonds

D) Metallic bonds

Q: At high altitude the boiling point of water is less than 100 °C. This is because of: (ETEA 2019)

A) High atmospheric pressure

B) Weak hydrogen bonding

C) No change in atmospheric pressure

D) Lower atmospheric pressure

Q: The existence of a substance in more than one solid modification is known as: (ETEA 2007)

A) Isomorphism

B) Amorphism

C) Polymorphism

D) None

Q: The type of intermolecular forces present in solid mercury is: (ETEA 2008)

A) Covalent bond

B) Ionic bond

C) Metallic bond

D) H-bond

Q: The electrical conductivity of NaCl crystal is: (ETEA 2008)

A) More than NaBr

B) Lesser than NaBr

C) Equal to NaBr

D) NaCl crystal doesn’t conduct electric current

Q: The shape/appearance in which a crystal grows is called: (ETEA 2009)

A) Crystal geometry

B) Crystal lattice

C) Crystal habit

D) None

Q: Which characteristic is NOT usually attributed to ionic substances? (ETEA 2010)

A) High melting points

B) Deform when struck

C) Fragility

D) Crystalline

Q: Which region of the spectrum is used to determine crystalline solid structure? (ETEA 2011)

A) Visible

B) Infrared

C) X-rays

D) Ultraviolet

Q: KNO₃ exists in rhombohedral & orthorhombic forms; the phenomenon is known as: (ETEA 2011)

A) Polymorphism

B) Isomorphism

C) Allotropy

D) None

Q: Choose the correct statement: (ETEA 2012)

A) Crystalline solids are anisotropic; liquid crystals isotropic

B) Crystalline solids isotropic; liquid crystals anisotropic

C) Liquid crystals show both isotropic & anisotropic properties

D) Neither isotropic nor anisotropic

Q: Choose the correct statement about ionic solids: (ETEA 2012)

A) Ionic solids exist as molecules

B) Ionic solids have high volatility

C) Ionic solids exist as liquids

D) Ionic solids have high melting & boiling points

Q: Which is incorrect statement? (ETEA 2014)

A) Ionic bonds are non-directional

B) Covalent crystals are molecular

C) Covalent bonds are rigid & non-directional

D) Ionic compounds have high melting points

Q: Sodium chloride crystal structure is: (ETEA 2014)

A) Hexagonal

B) Body-centered cubic

C) Face-centered cubic

D) Tetragonal

Q: NaNO₃ and CaCO₃ crystallize in rhombohedral forms; they are: (ETEA 2014)

A) Allotropes

B) Polymorphous

C) Isomorphous

D) None

Q: Graphite (allotrope of carbon) is: (ETEA 2016)

A) Isotropic

B) Anisotropic

C) Bad conductor of electricity

D) Both (b) & (c)