Physics Thermodynamics ETEA 2014
PMDC Verified Question 53 of 54
The amount of heat required to raise the temperature of 1kg of substance through 1 K is called;
A
Specific heat
B
One calorie
C
Heat capacity
D
1 Joule
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Specific heat
1. Concept:

The specific heat capacity of a material is defined as the amount of heat energy required to raise the temperature of a unit mass (1 kg in SI units) of that substance by 1 Kelvin (or 1°C).

2. Formula:

$$c = \frac{Q}{m \Delta T}$$

3. Solution:

  • The question explicitly specifies a mass of 1 kg.


  • When mass \(m = 1 \text{ kg}\) and \(\Delta T = 1 \text{ K}\), the heat \(Q\) is exactly equal to the specific heat \(c\).


4. Why other options are incorrect:

Heat capacity (without the word 'specific') refers to the entire body regardless of its mass. Joules and calories are units of energy, not properties of a material.

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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