IB DP Biology A1.1 Water Exam Style Questions HL Paper 1
IB DP Biology A1.1 Water Exam Style Questions HL Paper 1
IB DP Biology A1.1 Water Exam Style Questions HL Paper 1 at IITian Academy focus on a specific topic or type of questions asked in actual exam. Questions are based on new syllabus for first assessment of 2025.
A1.1 Water Topics : Polarity, Hydrogen Bonding, Solvent Properties, Physical Properties, Consequences, Extraterrestrial Life
Question
The mean air and water temperatures recorded at the same time of day at various distances downstream from the city of Asunción on the Lower Paraguay River over an 8-day period shows a relation. What accounts for the differences between the water and air temperatures ?
A. Evaporation of surface water causes an increase in the temperature of surface water.
B. Adhesion between water molecules prevents heat absorption, so its temperature remains lower.
C. Heat is rapidly lost from water due to breakage of covalent bonds.
D. Breakage of hydrogen bonds in water requires much heat energy.
▶️Answer/Explanation
Ans. D
Question
Water has a specific heat capacity of \(4.2 \mathrm{~J} \mathrm{~g}^{-1} \mathrm{~K}^{-1}\) at room temperature, a latent heat of vaporization equal to \(2257 \mathrm{~J} \mathrm{~g}^{-1}\), and a boiling point of \(100{ }^{\circ} \mathrm{C}\). What are the specific heat capacity, latent heat of vaporization and boiling point of methane?
▶️Answer/Explanation
Ans:A
Question
Where do hydrogen bonds form?
Between the slight negative charge of hydrogen and slight positive charge of oxygen within a water molecule
Between the slight positive charge of hydrogen and slight negative charge of oxygen within a water molecule
Between the slight positive charge of hydrogen and slight negative charge of oxygen in different water molecules
Between the slight negative charge of hydrogen and slight positive charge of oxygen in different water molecules
Answer/Explanation
Ans: C