MCQ on Temperature and its Measurement Class 6
Class 6 Science Chapter 7 MCQ Temperature and its Measurement
Multiple Choice Questions :
Question 1.
Which out of the following is reliable to measure hotness or coldness of an object?
(a) Sense of vision
(b) Sense of touch ,
(c) Measuring temperature
(d) Both b and c
Answer:
(c) Measuring temperature
Question 2.
Name the device used to measure the hotness or coldness of an object.
(a) Barometer
(b) Anemometer
(c) Lactometer
(d) Thermometer
Answer:
(d) Thermometer
Question 3.
Name the thermometer given in the picture below.
(a) Digital clinical thermometer
(b) Laboratory thermometer
(c) Maximum and minimum thermometer
(d) Infrared thermometer
Answer:
(d) Infrared thermometer
Question 4.
What is normal human body temperature?
(a) 37° F
(b) 98.6° C
(c) 98.6° F
(d) 37 K
Answer:
(c) 98.6° F
Question 5.
Vishal has three thermometers as shown in the figure given below. He wants to measure the temperature of a solution that he has prepared for experimentation and that of his body. Which thermometer should he choose?
(a) Thermometer (i) and (ii) for measuring body temperature and (iii) for measuring the temperature of the solution.
(b) Thermometer (i) and (iii) for measuring body temperature and (ii) for measuring the temperature of the solution.
(c) Only thermometer (iii) for measuring body temperature and (ii) for measuring the temperature of the solution.
(d) Thermometer (ii) for measuring the temperature of both.
Answer:
(b) Thermometer (i) and (iii) for measuring body temperature and (ii) for measuring the temperature of the solution.
Question 6.
Which liquid is filled in the bulb of a laboratory thermometer?
(a) Alcohol
(b) Silver
(c) Mercury
(d) Both a and c
Answer:
(d) Both a and c
Question 7.
Which of the following parameters is measured by the given thermometer?
(a) Air temperature
(b) Human Body temperature
(c) Temperature of boiling water
(d) Temperature of animals
Answer:
(a) Air temperature
Question 8.
Mercury and alcohol are two common liquids used in thermometers. The boiling point of mercury is 357° C, while its freezing point is -39° C. For alcohol, the boiling point is 78° C and the freezing point is -80° C. It is required in a laboratory to make measurements which are in the region of -60° C. Which type of thermometer would be more suitable? CBSE Diksha
(a) A mercury thermometer, since the freezing point of mercury is higher than -60° C.
(b) A mercury thermometer, since the boiling point of mercury is as high as 357° C.
(c) An alcohol thermometer, since the boiling point of alcohol is lower at 78° C.
(d) An alcohol thermometer, since the freezing point of alcohol is lower than -60° C.
Answer:
(d) An alcohol thermometer, since the freezing point of alcohol is lower than -60° C.
Question 9.
Where might you commonly find wall-mounted thermometers?
(a) Kitchens and dining rooms
(b) School laboratories and clinics
(c) Libraries and bookstores
(d) Cafes and restaurants
Answer:
(b) School laboratories and clinics
Question 10.
What is the temperature reading on Fahrenheit scale in the given figure?
(a) 37° F
(b) 100° F
(c) 98° F
(d) 34° F
Answer:
(b) 100° F
Question 11.
Which of the following is not a unit of temperature?
(a) Kelvin
(c) Watt
(b) Celsius
(d) Fahrenheit
Answer:
(c) Watt
Question 12.
What type of thermometer uses alcohol to measure temperature?
(a) Digital thermometer
(b) Clinical thermometer
(c) Laboratory thermometer
(d) Infrared thermometer
Answer:
(c) Laboratory thermometer
Question 13.
Which temperature scale is used in scientific research because it starts from absolute zero?
(a) Kelvin
(c) Celsius
(b) Fahrenheit
(d) Both a and b
Answer:
(a) Kelvin
Question 14.
Which of the following temperatures is the coldest?
(a) 273 K
(c) 0° C
(b) 98.6° F
(d) 100° F
Answer:
(a) 273 K
Assertion-Reason Questions :
1. The questions given below consist of an assertion and a reason. Based on that, choose the appropriate option.
(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
1. Assertion (A) Mercury is commonly used in clinical thermometers.
Reason (R) It expands and rises in the column when heated.
Answer:
(a) Mercury expands and rises in the column when heat is provided to it, hence it is used as a liquid in clinical thermometers.
2. Assertion (A) Celsius and Kelvin are only two different temperature scales.
Reason (R) Kelvin is used mainly in scientific works.
Answer:
(d) There are three temperature scales, Celsius, Fahrenheit and Kelvin. In scientific work, Kelvin scale is commonly used.
3. Assertion (A) Digital clinical thermometers are replacing mercury clinical thermometers.
Reason (R) Temperature in a digital thermometer is determined with the help of heat sensors.
Answer:
(b) Both the statements are correct but the reason of replacing mercury thermometers by digital thermometers is the toxic nature of mercury.
2. The questions given below consist of an assertion and a reason. Based on that, choose the appropriate option.
(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
1. Assertion (A) We can easily convert the temperature from Celsius scale to Kelvin scale.
Reason (R) The boiling of water is 100° C which is almost equivalent to 373 K .
Answer:
(b) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
2. Assertion (A) The temperature of human beings does not normally go below 35° C or above 42° C.
Reason (R) Laboratory thermometer can also be used to measure the human body temperature.
Answer:
(c) Assertion is true but Reason is false.
Fill in the Blanks :
1. Temperature is the measure of degree of ______ or ______ of an object.
Answer:
hotness, coldness
2. Kelvin is the ______ of temperature.
Answer:
S.I. unit
3. A temperature measured as 37.0° C on Celsius scale is ______ to 98.6° F on Fahrenheit scale.
Answer:
equivalent
4. The temperature of human beings does not normally go below ______
Answer:
35° C
5. The temperatures of boiling water and ice are outside the range of ______ thermometer.
Answer:
clinical
6. Laboratory thermometer ranges from ______ to ______
Answer:
-10° C to 110° C
7. Do not hold the mercury thermometers by their ______
Answer:
bulb
8. Laboratory thermometer should be held ______ and not tilted.
Answer:
vertically
9. Radiation is the process of transferring ______ from one body to another body.
Answer:
heat
10. The temperature of boiling water cannot be measured by a ______ thermometer.
Answer:
clinical
11. Woollen clothes keep us warm in winter because they are ______
Answer:
insulator
12. The temperature through a ______ must be read while the thermometer is in the water.
Answer:
laboratory thermometer
True/ False :
1. We can rely upon our sense of touch to decide correctly whether a body is hot or cold.
Answer:
False
2. A hotter body has a higher temperature than a colder body.
Answer:
True
3. Clinical thermometers are used for many purposes.
Answer:
False
4. All clinical thermometers run on batteries.
Answer:
False
5. Mercury’ is an extremely toxic substance and is difficult to dispose off, if the thermometer breaks accidently.
Answer:
True
6. Temperature in a mercury thermometer is determined with the help of heat sensors.
Answer:
False
7. Non-contact thermometers are also called infrared thermometers.
Answer:
True
8. In scientific work, Fahrenheit scale of temperature is used.
Answer:
False
9. In laboratory thermometers, the temperature must be read while the thermometer is immersed in water.
Answer:
True
10. Weather reports mention the maximum and minimum air temperature of the day.
Answer:
True
11. The highest temperature that a laboratory thermometer can measure is 100° C.
Answer:
False
12. All three temperature scales are named in honour of the scientists who developed these scales.
Answer:
True
Match the Following :
Match the terms given in column I with the temperatures they are related with in column II.
| Column I | Column II |
| (i) Boiling water | (a) 0 K |
| (ii) Normal human body | (b) 39° C |
| (iii) Highest temp. through a lab thermometer | (c) 0° C |
| (iv) Absolute zero | (d) 100° C |
| (v) Person suffering from fever | (e) 110° C |
| (vi) Ice | (f) 37° C |
Answer:
| Column I | Column II |
| (i) Boiling water | (d) 100° C |
| (ii) Normal human body | (f) 37° C |
| (iii) Highest temp. through a lab thermometer | (e) 110° C
|
| (iv) Absolute zero | (a) 0 K |
| (v) Person suffering from fever | (b) 39° C |
| (vi) Ice | (c) 0° C |
Case based Questions :
1. Rohan and his family go to the beach on a hot summer day. He notices that the sand is very hot, and the sea water feels refreshing and cool. He brought a thermometer with him to measure the temperature of both the sand and the sea water.
Answer the following questions on the basis of above information
(i) If the thermometer shows 45° C for the sand and 28° C for the water, why do the sand and water feel different in terms of temperature?
Answer:
The sand feels hotter because it absorbs and retains more heat from the sun than thewater does. Water takes longer to heat up as well as to cool down, which is why it feels cooler.
(ii) Why is it not advisable to use a clinical thermometer to measure the temperature of the sand?
Answer:
A clinical thermometer is not suitable for measuring the sand’s temperature because it measures limited range of human body temperature (i.e. 35° C to 42° C). The sand’s temperature might exceed this range, damaging the thermometer.
(iii) What kind of thermometer would be best for measuring the temperature of the sand?
(a) Clinical thermometer
(b) Infrared thermometer
(c) Maximum and minimum thermometer
(d) Digital thermometer
Answer:
(b) For measuring the temperature of sand, an infrared thermometer is the best because it allows you to measure the surface temperature without direct contact.