The Question is from neet-botany plant-physiology , and it was created by the author D VINOD

Question

The heat released during imbibition is primarily due to:

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Imbibition and heat release
 **Related Topics**: Hydrogen bonding, enthalpy of interaction, thermodynamics
 **Prerequisites**: Understanding of hydrogen bonds and their energy, basic thermodynamics.
## SOLUTION PATHWAY
**Given Information**:
  The question asks about the primary cause of heat release during imbibition.
  Imbibition is the absorption of liquid by a solid material.
**Method & Steps**:
 1. Analyze the options:
  Reasoning: Imbibition involves the interaction between the imbibant (solid) and the imbibed liquid (usually water).  This interaction releases energy in the form of heat.
 2. Evaluate each option:
  Option A: Frictional forces are negligible in comparison to the energy changes involved in hydrogen bond formation.
  Option B: Latent heat of vaporization relates to phase transitions (liquid to gas), not the process of a liquid being absorbed by a solid.
  Option C: Hydrogen bonds are strong intermolecular forces. The formation of numerous hydrogen bonds between the water molecules and the polar groups of the imbibant releases a significant amount of energy as heat.
  Option D: Metabolic activity is irrelevant in non-living systems or in the context of simple imbibition processes.
 3. Conclusion:
  Result: The primary cause of heat release during imbibition is the establishment of hydrogen bonds between the imbibant and the imbibed liquid.
  Verification: This is consistent with the understanding of hydrogen bond energies and the exothermic nature of their formation.
 ## OPTION ANALYSIS
A :x: Frictional forces are insignificant compared to the energy released by hydrogen bond formation.
B :x: Latent heat of vaporization is relevant for evaporation, not imbibition.
C ✓: Hydrogen bond formation is the dominant process releasing heat during imbibition. The energy released is significant due to the large number of bonds formed.
D :x: Metabolic activity is not a factor in simple imbibition processes.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing latent heat of vaporization with the heat released by hydrogen bond formation: Remember that imbibition is an absorption process, not a phase transition.
  2.Overlooking the significance of hydrogen bonds in the context of imbibition:  Hydrogen bonding is the main driving force behind the process and associated heat release.
 **Quick Tips**:
  1.Remember that hydrogen bond formation is an exothermic process, meaning it releases heat.
  2.Associate imbibition with the strong attractive forces (hydrogen bonds) between water molecules and the solid material.

D VINOD · Answer

Frictional forces between the imbibant and the liquid.

D VINOD · Answer

The release of latent heat of vaporization.

D VINOD · Answer

The correct Option is "The establishment of hydrogen bonds between the imbibant and the imbibed liquid."

D VINOD · Answer

Metabolic activity within the imbibant.

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