1. Which device is used to measure temperature?
a) Barometer
b) Thermometer
c) Stopwatch
d) Anemometer
2. What is the SI unit of temperature?
a) Celsius
b) Fahrenheit
c) Kelvin
d) Joule
3. Which scale is commonly used in clinical thermometers?
a) Kelvin
b) Fahrenheit
c) Celsius
d) All of these
4. Normal human body temperature in Fahrenheit is:
a) 100°F
b) 96.6°F
c) 98.6°F
d) 37°F
5. Normal human body temperature in Celsius is:
a) 36°C
b) 37°C
c) 100°C
d) 32°C
6. Which liquid is commonly used in thermometers?
a) Water
b) Mercury
c) Oil
d) Kerosene
7. Which thermometer is used to measure human body temperature?
a) Laboratory thermometer
b) Clinical thermometer
c) Room thermometer
d) Industrial thermometer
8. The boiling point of water in Celsius is:
a) 0°C
b) 37°C
c) 100°C
d) 110°C
9. The freezing point of water in Celsius is:
a) –5°C
b) 0°C
c) 32°C
d) 37°C
10. Laboratory thermometers generally measure temperatures in the range:
a) 0°C to 100°C
b) –10°C to 110°C
c) 35°C to 42°C
d) –50°C to 50°C
11. Mercury is used in thermometers because:
a) It boils easily
b) It sticks to glass
c) It is a good conductor of heat and does not stick to glass
d) It is colorful
12. Alcohol thermometers are generally used in:
a) Cold regions
b) Hot regions
c) Equatorial regions
d) Desert regions
13. The unit of temperature on Celsius scale is:
a) K
b) °F
c) °C
d) °K
14. The unit of temperature on Kelvin scale is:
a) °C
b) °F
c) K
d) °K
15. For how long should a clinical thermometer be kept under the tongue?
a) 10 seconds
b) 30 seconds
c) 1 minute
d) 5 minutes
16. The body temperature should be read from the thermometer:
a) Immediately after removing it
b) After shaking it
c) After 5 minutes
d) Without removing
17. Which type of thermometer has no mercury?
a) Clinical thermometer
b) Laboratory thermometer
c) Digital thermometer
d) Industrial thermometer
19. Which part of thermometer is most sensitive to temperature change?
a) Scale
b) Bulb
c) Stem
d) Liquid column top
20. Maximum body temperature measurable by a clinical thermometer is:
a) 37°C
b) 42°C
c) 50°C
d) 35°C
21. Why is mercury not used in digital thermometers?
a) It is cheap
b) It is invisible
c) It is toxic and unsafe
d) It is inaccurate
22. Which is the safest type of thermometer?
a) Laboratory thermometer
b) Clinical thermometer
c) Industrial thermometer
d) Digital thermometer
23. What should be done before using a clinical thermometer?
a) Wash with water
b) Shake to bring mercury below 35°C
c) Keep in freezer
d) Heat it
24. Which part of the thermometer contains mercury?
a) Scale
b) Capillary tube
c) Bulb
d) Outer casing
25. The reading on a clinical thermometer is always taken by holding it:
a) Below eye level
b) At eye level
c) Above eye level
d) Flat on hand
26. A reliable measure of hotness or coldness of a body is:
a) Weight
b) Height
c) Temperature
d) Speed
27. Why are mercury thermometers being replaced by digital thermometers?
a) Mercury is cheap
b) Mercury is toxic and disposal is difficult
c) Digital thermometers are hard to use
d) Mercury thermometers are more accurate
28. Main advantage of digital thermometer over mercury thermometer:
a) Less expensive
b) Lighter in weight
c) Easier to read
d) More durable
29. Boiling point of water in Fahrenheit is:
a) 100°F
b) 98.6°F
c) 32°F
d) 212°F
30. Temperature of absolute zero in Kelvin is:
a) 0 K
b) –273 K
c) 273 K
d) 100 K
1. Answer: b) Thermometer
2. Answer: c) Kelvin
3. Answer: b) Fahrenheit
4. Answer: c) 98.6°F
5.Answer: b) 37°C
6. Answer: b) Mercury
7. Answer: b) Clinical thermometer
8. Answer: c) 100°C
9. Answer: b) 0°C
10. Answer: b) –10°C to 110°C
11. Answer: c) It is a good conductor of heat and does not stick to glass
12. Answer: a) Cold regions
13. Answer: c) °C
14.Answer: c) K
15.Answer: b) 30 seconds
16. Answer: a) Immediately after removing it
17. Answer: c) Digital thermometer
19. Answer: b) Bulb
20. Answer: b) 42°C
2. Answer: c) It is toxic and unsafe
22. Answer: d) Digital thermometer
23. Answer: b) Shake to bring mercury below 35°C
24. Answer: c) Bulb
25. Answer: b) At eye level
26. Answer: c) Temperature
27. Answer: b) Mercury is toxic and disposal is difficult
28. Answer: c) Easier to read
29. Answer: d) 212°F
30. Answer: a) 0 K
The jerk to the thermometer will allow the mercury in or above the kink to flow into the bulb so that the mercury level is below normal temperature
Question 2
Why is it advised not to hold the thermometer by its bulb while reading it?
If we hold a thermometer by its bulb, the mercury in the bulb will expand due to our body temperature
Question 3
In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object. What is the reason for this rise in the level of mercury?
Mercury expands when heated. Hence, it rises in the capillary tube.
As glass is a poor conductor of heat, the wall of the bulb is kept thin so that transfer of heat between the Mercury and its surrounding can take place easily.
Question 5
Why is mercury used in thermometers?
Question 6
What precautions should be observed while reading a clinical thermometer?
Question 7
What precautions should be observed measuring temperature with a laboratory thermometer?