Q
Which of the following statements is/are true/false? A. If we increase temperature and pressure, we can liquefy the atmospheric gases. B. A hot dry day means the temperature of the atmosphere is high and humidity of air is low. Both these factors increase the rate of evaporation and thus enormous cooling is produced.
RRB Group D, 15-Oct-18 S-1
2018
✓ Answer:
B
Both A and B are true
Statement A: Increasing temperature and pressure can liquefy atmospheric gases by bringing molecules closer together. Statement B: On a hot, dry day, high temperature and low humidity increase the rate of evaporation, leading to significant cooling. So, both statements are true.