The water molecules remain attached together and do not separate because of
a) covalent bond
b) ionic bond
c) hydrogen bonding
d) dative bond
The amount of heat energy required to raise the temperature of one gram of water by one degree Celsius is called…
a) heat of vaporization
b) specific heat capacity
c) heat of sublimation
d) heat enthalpy
Explanation: water has high specific heat, it means water absorb or releases lare quantities of heat energy with little change in temperature
The amount of heat energy required to to convert one gram of liquid water into vapours at its boiling point is called…….
a) heat of vaporization
b) specific heat capacity
c) heat of sublimation
d) heat enthalpy
Explanation: water has high heat of vaporization
Water has high density at……….°C.
a) 100
b) 0
c) 25
d) 4
Explanation: therefore ice (solid) is less denser than liquid water
Water molecules may ionize into…….
a) hydrogen ions
b) hydroxyl ions
c) ammonium ions
d) both a and b
Explanation: H2O à H+ + OH-
Which of the following is/are properties of water?
a) polar nature, hydrogen bonding and universal solubility
b) high specific heat and high heat of vaporization
c) cohesive and adhesive forces, abnormal expansion and self-ionization
d) all of these
