Question

Which instrument is used to measure body temperature?

• A. Lactometer
• B. Calorimeter
• C. Thermometer
• D. Barometer

Hint:

Remember instrument functions: Thermometer → Temperature Barometer → Atmospheric pressure Lactometer → Milk purity Calorimeter → Heat energy Hygrometer → Humidity Manometer → Gas pressure

Answer 1

The Correct Option is C

Different instruments are designed to measure specific physical quantities. Body temperature is measured using a specialized device. Instrument Functions:

Thermometer: Measures temperature

Clinical thermometer measures body temperature (range 35°C to 42°C or 95°F to 108°F)
Contains mercury or alcohol in a glass tube, or uses digital sensors
Modern types: digital, infrared (ear/forehead), mercury-free

Lactometer: Measures purity/density of milk

Determines water content in milk
Works on principle of specific gravity

Calorimeter: Measures heat energy in chemical reactions or physical changes

Used to determine calorie content in foods
Measures specific heat capacity

Barometer: Measures atmospheric pressure

Used in weather forecasting
Mercury or aneroid types

Why Thermometer is Correct:

Specifically designed to measure temperature
Clinical thermometers have a kink to prevent mercury from falling back quickly
Normal body temperature: 37°C or 98.6°F
Fever indicates body temperature above normal
Final Answer: Thermometer