Quantities of heat Q can be measured using a container called

Analyze the question: The question asks which container is used to measure quantities of heat (Q). Notice the key words: "quantities of heat" and "container."

Explain the concept: Heat is a form of energy, measured in joules (J). To measure it, we use the principle of heat exchange:

Q = mcΔθ

where m = mass, c = specific heat capacity, and Δθ = change in temperature.

A calorimeter is a insulated container (usually made of copper or aluminium, often with a lagging and lid) in which a substance is heated or cooled so the heat gained or lost can be calculated. The name comes from "calor" (Latin for heat) and "metrum" (measure).

Check each option:

• A. Thermometer: Measures temperature, not heat, and it is an instrument, not a container.
• B. Measuring cylinder: Measures volume of liquids.
• C. Calorimeter: A container used to measure quantities of heat. ✔
• D. Meter rule: Measures length.

Answer: The correct option is C. Calorimeter.

Exam tip: Match the word to its root. "Calor-" means heat, so a calorimeter measures heat. Also remember the difference: a thermometer measures temperature (how hot), while a calorimeter measures heat quantity (how much heat energy). JAMB often tests this distinction.