Lab Thermometer

Q.

Give reason for the following.

Water cannot be used as a thermometric liquid.

Q.

State similarities and difference between the laboratory thermometer and the clinical thermometer.

Q. Why do we use mercury in thermometers? Can water be used instead of mercury?

Q. What is a thermometer and how does it work. [3 MARKS]

Q.

Laboratory Thermometers are used to measure the temperature of boiling water

1. Clinical thermometer

2. Laboratory thermometer

Q. How should one measure the temperature of a liquid with a laboratory thermometer?

1. By touching the thermometer to the base of the container

2. By touching the thermometer to the sides of the container

3. By placing the thermometer in the liquid such that it does not touch the base or the side of the container

4. By placing the thermometer above the surface of the container

Q. The bulb of the lab thermometer should not touch the bottom of the container containing the liquid while measuring the temperature.

1. True
2. False

Q.

Which of the following can be used to measure the temperature of boiling water?

1. Clinical thermometer

2. Laboratory thermometer

3. Both laboratory and clinical thermometer

4. Barometer

Q.

Why a thermometer is kept only below our tongue, underarm or ear

Q.

The phenomenon of expansion of ___ due to heat is used in making a thermometer.

1. Mercury

2. None of these

3. Iron

4. Zinc

Q.

Sir/Ma'am

Can we measure the temperature of solids using a laboratory thermometer? If not then which thermometer is used to measure the temperature of solids?

Q. Why do we use mercury in thermometers? Can water be used instead of mercury?

Q. When doing an experiment to measure the temperature at which water boils, Akash keeps the laboratory thermometer completely immersed in water and without touching the surface or bottom of the beaker, whereas Susweta does the same experiment with the thermometer touching the bottom of the beaker. Who is more likely to get an accurate reading?

1. Akash
2. Susweta
3. Both Akash and Susweta
4. Neither Akash nor Susweta

Q.

From the given options, select a device that we use to measure temperature.

1. Sphygmomanometer

2. Thermometer

3. Thermostat

4. Stethoscope

Q.

Which of the following can be used to measure the temperature of boiling water?

1. Clinical thermometer

2. Laboratory thermometer

3. Both laboratory and clinical thermometer

4. Neither laboratory nor clinical thermometer

Q.

Sushweta was trying to measure the temperature of boiling water. She found the reading on the thermometer to be ${80}^{\circ }C$. Which of the following(s) can be the reason(s) for this?

1. The mercury bulb was touching the surface of the container

2. She took the reading while the thermometer was inside boiling water

3. The thermometer was tilted

4. None of the above

Q.

From the given options select a device that is used to measure temperature.

1. Thermostat

2. Thermometer

3. Stethoscope

4. Sphygmomanometer

Q.

Name the following: Normal human body temperature.

Q. In a thermometer, there are 100 major divisions between the freezing point and the boiling point of water. If each major division has 5 minor divisions, what is the minimum reading that can be taken using the thermometer?

1. 1℃
2. 0.8℃
   
3. 1.2℃
4. 0.2 ℃
   

Q.

Mercury is used in thermometers to measure temperature because:

1. It changes color with temperature

2. It expands or contracts with temperature

3. It changes state with temperature

4. All of the above

Q.

A clinical thermometer is always given a jerk before taking the temperature.

1. True
2. False

Q. State similarities and differences between a laboratory thermometer and a clinical thermometer. [4 marks]

Q. Identify the type of given thermometers.

1. 
2. Digital
3. 
4. Infrared
5. 
6. Laboratory

Q. Max-min thermometer is also known as the Six's thermometer.

1. False
2. True

Q. Which metal is used in a thermometer?

1. Potassium
2. Zinc
3. Lead
4. Mercury

Q.

Name the following: The instrument used to measure temperature.

Q. Pick the correct statement(s).
Statement I: Wiped markings on a mercury thermometer can be recreated by marking 0°C and 100°C on the scale and dividing it in hundred equal parts.
Statement II: Per degree celsius expansion of mercury is not equal at all temperatures.

1. Statement I is correct but statement II is incorrect.
2. Statement II is correct but statement I is incorrect.
3. Both statements are correct.
4. Both statements are incorrect.

Q.

While doing an experiment to measure the temperature at which water boils, Ram keeps the laboratory thermometer completely immersed in water without touching the surface or bottom of the beaker. On the other hand does Shyam does the same experiment with the thermometer touching the bottom of the beaker. Who is more likely to get an accurate reading?

1. Ram

2. Shyam

3. Ram and Shyam will get the same result

4. None of them will be able to get an accurate result

Q.

While doing an experiment to measure the temperature at which water boils, Ram keeps the laboratory thermometer completely immersed in water without touching the surface or bottom of the beaker. Shyam on the other hand does the same experiment with the thermometer touching the bottom/surface of the beaker. Who is more likely to get an accurate reading?

1. Ram

2. Shyam

3. None of them will be able to get an accurate result

4. Ram and Shyam will get the same result

Q. While measuring the temperature of a pot of water while heating, the markings on the laboratory thermometer were erased. After a certain time of heating, the mercury level is observed to be constant. What could have been the reading on the thermometer?

1. $0°C$
2. $120°C$
3. $100°C$
4. $-70°C$