Chemistry Gases PMC 2021
PMDC Verified Question 49 of 65
212 degree Fahrenheit is expressed in Kelvin as:
A
373
B
273
C
173
D
0
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: 373
Concept:

To convert temperature between Fahrenheit and Kelvin, we use the standard interconversion formula that relates the scales via their freezing and boiling points of water.

Formula:

$$ \frac{°F - 32}{180} = \frac{K - 273.15}{100} $$

Solution:

  • Substitute the given Fahrenheit value (212°F) into the formula:


  • \( \frac{212 - 32}{180} = \frac{K - 273}{100} \)


  • \( \frac{180}{180} = \frac{K - 273}{100} \)


  • \( 1 = \frac{K - 273}{100} \)


  • \( 100 = K - 273 \implies K = 373 \)


  • Note: 212°F is the boiling point of water, which intrinsically corresponds to 100°C, and 100°C + 273 = 373 K.


Why other options are incorrect:

  • Option B: 273 K is the freezing point of water (32°F or 0°C).
  • Options C & D: These are mathematically incorrect calculations.

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.

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