Chemistry Gases SZABMU 2024
PMDC Verified Question 8 of 65
When the pressure of a gas is plotted against volume at constant temperature curve obtained is known as:
A
Isobar
B
Isotherm
C
Isochoric
D
Isotonic
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Isotherm
Concept:

In thermodynamics, specific terms are used to describe processes where a particular state variable is held strictly constant.

Solution:

  • The prefix 'iso-' comes from Greek meaning 'equal' or 'same'.


  • The suffix '-therm' relates to thermal energy or temperature.


  • Therefore, an isotherm is a curve on a graph (usually a P-V diagram representing Boyle's Law) that connects points representing states of identical temperature.


Why other options are incorrect:

  • Option A: An isobar represents a process or graph at constant pressure ('bar' = pressure).
  • Option C: Isochoric (or isometre) represents a process at constant volume.
  • Option D: Isotonic refers to solutions with equal osmotic pressure, typically in biology/chemistry contexts.

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 Gases 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