Question
How will raise in temperature affects the viscosity of liquids and gases?
BITSAT
Chemistry
States of Matter
2022
BITSAT 2022
BITSAT Chemistry Question (2022) — Solution
Options
- A. Both increases
- B. Both decreases
- C. In case of liquids, decreases and in case of gases, increases.
- D. In case of liquid, increases and in case of gases, decreases.
Answer
B. Both decreases
Step-by-step solution
In case of liquids, cohesive forces decrease and hence, their viscosity decreases while increasing the temperature. However, in case of gases, with the increase in temperature kinetic energy of gaseous molecules increases and the molecules become more mobile.
Related: Chemistry — States of Matter · All PYQ Banks