Chemistry Reaction Kinetics NUMS 2023
PMDC Verified Question 25 of 80
The minimum amount of energy required by the colliding particles for effective collision is called:
A
Lattice energy
B
Activation energy
C
Bond energy
D
Hydration energy
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Activation energy
Concept:

According to collision theory, molecules must collide with sufficient force to disrupt their current electron clouds and break existing bonds.

Solution:

  • The specific minimum threshold of kinetic energy that colliding molecules must possess to overcome their mutual electron-cloud repulsion and successfully form an activated complex is termed the Activation Energy (\( E_a \)).
  • Collisions possessing energy equal to or greater than \( E_a \) are termed 'effective' or 'fruitful' collisions.


Why other options are incorrect:

Lattice energy relates to the formation of ionic solids. Bond energy is the energy holding a specific bond together. Hydration energy is released when ions dissolve in water.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Reaction Kinetics MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App