Which of the following processes requires heat energy from the surroundings?(a) Freezing(b Condensation(c) Evaporation(d) Deposition
BiologyClass 9CBSEAnswered 12 May 2026
Answer
(C): Freezing, condensation, and deposition are processes where a substance releases heat as it changes state (exothermic). Evaporation (liquid to gas), melting (solid to liquid), and sublimation (solid to gas) are processes that absorb heat (endothermic).
Suggested Q&A
Biology · Class 9- BiologyClass 9A boy runs along a circular track of radius 7 meters. If he completes one full round in 22 seconds, calculate his average speed and the magnitude of his average velocity for this round.
- BiologyClass 9What is the function of stomata in the epidermis of plant leaves?
- BiologyClass 9Describe the general characteristics of connective tissues that set them apart from other animal tissues.
- BiologyClass 9Distinguish between primary growth and secondary growth in plants, indicating which meristems are responsible for each.
- BiologyClass 9What is the role of intercalated discs in cardiac muscle tissue?
- BiologyClass 9Enlist the major types of cells found in blood and their specific functions.