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Thermometry — Homi Bhabha Class 6 Physics MCQs with Solutions
Free Homi Bhabha Class 6 Physics Thermometry MCQs with step-by-step solutions (10 questions). Part of Heat. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Thermometry · easy · theory
The instrument used to measure temperature is called a:
A. barometer
B. weighing scale
C. thermometer ✓ Correct
D. ruler
Solution: A thermometer is the instrument used to measure temperature, that is, how hot or cold something is.
Q2 — Thermometry · easy · theory
The temperature of the human body is usually measured with a:
A. measuring tape
B. kitchen scale
C. laboratory thermometer
D. clinical (doctor’s) thermometer ✓ Correct
Solution: A clinical thermometer, also called a doctor’s thermometer, is specially made to measure the temperature of the human body.
Q3 — Thermometry · easy · theory
The common unit used to measure temperature is the:
A. degree Celsius (°C) ✓ Correct
B. kilogram
C. second
D. metre
Solution: Temperature is commonly measured in degrees Celsius, written as °C. Kilogram, metre and second measure other things.
Q4 — Thermometry · easy · theory
The normal temperature of a healthy human body is about:
A. 37 °C ✓ Correct
B. 0 °C
C. 100 °C
D. 50 °C
Solution: The normal temperature of a healthy human body is about 37 °C (which is 98.6 °F).
Q5 — Thermometry · medium · theory
Pure water freezes and turns into ice at:
A. 37 °C
B. 0 °C ✓ Correct
C. 100 °C
D. 50 °C
Solution: Under normal conditions, water freezes into ice at 0 °C.
Q6 — Thermometry · medium · theory
Pure water boils and turns into steam at:
A. 100 °C ✓ Correct
B. 50 °C
C. 90 °C
D. 37 °C
Solution: Under normal conditions, water boils and changes into steam at 100 °C.
Q7 — Thermometry · medium · theory
A clinical thermometer usually measures temperatures only in the range:
A. 0 °C to 50 °C
B. 0 °C to 100 °C
C. 35 °C to 42 °C ✓ Correct
D. −10 °C to 110 °C
Solution: The human body temperature stays near 37 °C, so a clinical thermometer only needs a small range of about 35 °C to 42 °C.
Q8 — Thermometry · medium · numerical
Using the rule °F = (°C × 9/5) + 32, a temperature of 20 °C is equal to:
A. 36 °F
B. 52 °F
C. 40 °F
D. 68 °F ✓ Correct
Solution: First 20 × 9/5 = 36, then 36 + 32 = 68. So 20 °C is the same as 68 °F.
Q9 — Thermometry · hard · theory
Why should a clinical (doctor’s) thermometer NOT be used to measure the temperature of boiling water?
A. Boiling water is too cold for it
B. The thermometer has no numbers on it
C. Water cannot have any temperature
D. Boiling water at 100 °C is far above its range, so it may break ✓ Correct
Solution: A clinical thermometer only reads up to about 42 °C. Boiling water at 100 °C is far above this, so the thermometer could break.
Q10 — Thermometry · hard · numerical
Using the rule °C = (°F − 32) × 5/9, a temperature of 41 °F is equal to:
A. 5 °C ✓ Correct
B. 9 °C
C. 73 °C
D. 45 °C
Solution: First 41 − 32 = 9, then 9 × 5/9 = 5. So 41 °F is the same as 5 °C.