(A) Number of atoms
(B) Number of electrons
(C) Number of molecules
(D) Mass
Tag: Chemistry mcqs
Which of the following is as light as a feather and as strong as iron?
(A) Diamond
(B) Mercury
(C) Graphene
(D) Graphite
As a solid nature of diamond is:
(A) Ionic
(B) Covalent
(C) Metallic
(D) Molecular
Which of the following statement explains the solubility of an ionic substances in water?
(A) Water has high density
(B) Water molecule is polar
(C) Water molar mass is 18.02
(D) Water form dative bonding
The boiling point of a compound is mostly raised by:
(A) London dispersion forces
(B) Dipole-induced dipole interactions
(C) Intra-molecular hydrogen bonding
(D) Inter-molecular hydrogen bonding
Which of the following will show a high rate of evaporation?
(A) Ethanol
(B) Acetone
(C) Water
(D) Ethylene glycol
Which variable is mentioned in ideal gas equation is assumed to be constant in other gas laws?
(A) Temperature
(B) Volume
(C) Pressure
(D) Number of moles
How should conditions be changed to prevent the value of given gas from expanding when its mass is increased?
(A) Temperature lowered and pressure increased
(B) Temperature increased and pressure lowered
(C) Temperature and pressure both lowered
(D) Temperature and pressure both increased