--- title: "NCERT Solutions Class 6 Science Temperature and its Measurement" url: https://www.swavid.com/science/class/6/chapter/temperature-and-its-measurement/ncert-solutions dateModified: 2026-10-07T16:02:21+00:00 --- # NCERT Solutions Class 6 Science Temperature and its Measurement This chapter's questions cover concepts related to temperature, its measurement using clinical and laboratory thermometers, temperature scales, and data analysis of recorded temperatures. Free PDF (6 pages): https://www.swavid.com/api/seo/pdf/ncert/science/class-6/swavid-ncert-solutions-class-6-science-chapter-7-temperature-and-its-measurement-5323492b79.pdf ## Let us enhance our learning ### Question 1 *1 mark · MCQ* The normal temperature of a healthy human being is close to . - 98.6 °C - 37.0 °C - 32.0 °C - 27.0 °C **Solution** 1. The normal temperature of a healthy human body is taken to be $37.0 \ ^\circ\text{C}$. **Answer:** (ii) $37.0 \ ^\circ\text{C}$ > Common mistake: Confusing Celsius scale values with Fahrenheit scale values like $98.6 \ ^\circ\text{F}$. ### Question 2 *1 mark · MCQ* 37 °C is the same temperature as . - 97.4 °F - 97.6 °F - 98.4 °F - 98.6 °F **Solution** 1. A temperature measured as $37.0 \ ^\circ\text{C}$ on the Celsius scale is equivalent to $98.6 \ ^\circ\text{F}$ on the Fahrenheit scale. **Answer:** (iv) $98.6 \ ^\circ\text{F}$ > Common mistake: Choosing incorrect Fahrenheit values due to memory lapses. ### Question 3 *3 marks · Fill in the blank* Fill in the blanks: (i) The hotness or coldness of a system is determined by its . (ii) The temperature of ice-cold water cannot be measured by a thermometer. (iii) The unit of temperature is degree . **Part (i)** 1. The hotness or coldness of a body or system is measured by its temperature. Answer (i): temperature **Part (ii)** 1. A clinical thermometer cannot measure temperatures below its range, such as ice-cold water. Answer (ii): clinical **Part (iii)** 1. On the Celsius scale, the unit of temperature is degree Celsius. Answer (iii): Celsius **Answer:** (i) temperature, (ii) clinical, (iii) Celsius > Common mistake: Writing Fahrenheit instead of Celsius or missing the specific type of thermometer. ### Question 4 *1 mark · MCQ* The range of a laboratory thermometer is usually . - 10 °C to 100 °C - –10 °C to 110 °C - 32 °C to 45 °C - 35 °C to 42 °C **Solution** 1. Laboratory thermometers typically have a temperature range from $-10 \ ^\circ\text{C}$ to $110 \ ^\circ\text{C}$. **Answer:** (ii) $-10 \ ^\circ\text{C}$ to $110 \ ^\circ\text{C}$ > Common mistake: Confusing laboratory thermometer range with clinical thermometer range. ### Question 5 *1 mark · MCQ* Four students used a laboratory thermometer to measure the temperature of water as shown in Fig. 7.6: Who do you think followed the correct way for measuring temperature? - Student 1 - Student 2 - Student 3 - Student 4 **Solution** 1. The correct way is to hold the thermometer vertically without tilting, with the bulb immersed in water without touching the bottom or sides of the beaker. **Answer:** (ii) Student 2 > Common mistake: Tilted or touching the bottom/sides as seen in other student figures. ### Question 6 *2 marks · Very short answer* Colour to show the red column on the drawings of thermometers (Fig. 7.7) as per the temperatures written below: **Solution** 1. Observe the divisions on the thermometer scale and colour the red liquid column up to the mark corresponding to the given temperature. **Answer:** The red column is coloured up to $14 \ ^\circ\text{C}$, $17 \ ^\circ\text{C}$, and $7.5 \ ^\circ\text{C}$ respectively in the given diagrams. > Common mistake: Misreading the small divisions between the numbered marks. ### Question 7 *2 marks · Very short answer* Observe the part of thermometer shown in Fig. 7.8 and answer the following questions: (i) What type of thermometer is it? (ii) What is the reading of the thermometer? (iii) What is the smallest value that this thermometer can measure? **Part (i)** 1. 1. The thermometer shown in Fig. 7.8 is a laboratory thermometer used for measuring temperatures in a laboratory. Answer (i): Laboratory thermometer **Part (ii)** 1. 1. Observing the mercury/liquid column in Fig. 7.8, the level coincides with the mark $26\ ^\circ\text{C}$. Answer (ii): $26\ ^\circ\text{C}$ **Part (iii)** 1. 1. The temperature difference between two bigger marks (like $0\ ^\circ\text{C}$ and $10\ ^\circ\text{C}$) is $10\ ^\circ\text{C}$ with $10$ divisions between them. 2. 2. Therefore, each small division measures $10/10 = 1\ ^\circ\text{C}$. Answer (iii): $1\ ^\circ\text{C}$ **Answer:** (i) Laboratory thermometer (ii) $26\ ^\circ\text{C}$ (iii) $1\ ^\circ\text{C}$ ### Question 8 *3 marks · Short answer* A laboratory thermometer is not used to measure our body temperature. Give a reason. **Solution** 1. 1. A laboratory thermometer is designed to measure a wide range of temperatures, typically from $-10\ ^\circ\text{C}$ to $110\ ^\circ\text{C}$. 2. 2. Unlike a clinical thermometer, its liquid level begins to fall as soon as it is taken out of the body or substance. 3. 3. Therefore, it cannot be used reliably to measure human body temperature. **Answer:** A laboratory thermometer's liquid level starts falling immediately when taken out of contact, making it unsuitable for accurate body temperature measurement. > Common mistake: Stating only that the range is large without mentioning that the reading falls immediately when removed. ### Question 9 *3 marks · Short answer* Vaishnavi has not gone to school as she is ill. Her mother has kept a record of her body temperature for three days as shown in Table 7.4. (i) What was Vaishnavi’s highest recorded temperature? (ii) On which day and at what time was Vaishnavi’s highest temperature recorded? (iii) On which day did Vaishnavi’s temperature return to normal? **Part (i)** 1. 1. Looking at Table 7.4, the maximum value in the recorded temperatures is $40.0\ ^\circ\text{C}$. Answer (i): $40.0\ ^\circ\text{C}$ **Part (ii)** 1. 1. The temperature of $40.0\ ^\circ\text{C}$ is found in the row for Day One under the column for 7 pm. Answer (ii): Day One at 7 pm **Part (iii)** 1. 1. Normal human body temperature is around $37.0\ ^\circ\text{C}$ ($36.6\ ^\circ\text{C}$ to $37.6\ ^\circ\text{C}$ range). 2. 2. On Day Three, temperatures range from $36.6\ ^\circ\text{C}$ to $37.6\ ^\circ\text{C}$, returning to normal. Answer (iii): Day Three **Answer:** (i) $40.0\ ^\circ\text{C}$ (ii) Day One at 7 pm (iii) Day Three ### Question 10 *3 marks · Short answer* If you have to measure the temperature 22.5 °C, which of the following three thermometers will you use (Fig. 7.9)? Explain. **Solution** 1. Look at the given temperature, which is 22.5 °C. 2. Thermometer (b) has a range that covers negative temperatures up to positive values where 22.5 °C lies clearly within its scale. 3. Therefore, thermometer (b) is used to measure 22.5 °C. **Answer:** Thermometer (b) will be used because 22.5 °C lies comfortably within its scale range. > Common mistake: Not checking the markings and range of each thermometer carefully. ### Question 11 *1 mark · MCQ* The temperature shown by the thermometer in Fig. 7.10 is - 28.0 °C - 27.5 °C - 26.5 °C - 25.3 °C **Solution** 1. Looking at Fig. 7.10, the mercury level is at 27.5 °C between 27 °C and 28 °C. **Answer:** (ii) 27.5 °C > Common mistake: Miscounting the small divisions between the whole numbers. ### Question 12 *3 marks · Numerical* A laboratory thermometer has 50 divisions between 0 °C and 100 °C. What does each division of this thermometer measure? **Solution** 1. Given: Temperature difference between $0\ ^\circ\text{C}$ and $100\ ^\circ\text{C} = 100\ ^\circ\text{C}$ 2. Number of divisions $= 50$ 3. Formula: $\text{Value of each division} = \frac{\text{Temperature difference}}{\text{Number of divisions}}$ 4. Substitution: $\frac{100\ ^\circ\text{C}}{50}$ 5. Result: $2\ ^\circ\text{C}$ **Answer:** $2\ ^\circ\text{C}$ > Common mistake: Assuming there are 100 divisions instead of 50. ### Question 13 *2 marks · Very short answer* Draw the scale of a thermometer in which the smallest division reads 0.5 °C. You may draw only the portion between 10 °C and 20 °C. **Solution** 1. Draw a line representing the thermometer tube between 10 °C and 20 °C. 2. Mark the major graduations at 10 °C, 11 °C, 12 °C, up to 20 °C, with longer lines for each whole degree. 3. Draw smaller intermediate marks exactly halfway between each consecutive pair of degree marks to represent 0.5 °C intervals. **Answer:** A scale showing whole degree marks from 10 °C to 20 °C with a smaller mark halfway between each pair representing 0.5 °C. > Common mistake: Failing to place the 0.5 °C mark exactly midway between the whole degree divisions. ### Question 14 *2 marks · Very short answer* Komal tells you that she has a fever of 101 degrees. Does she mean it on the Celsius scale or Fahrenheit scale? **Solution** 1. Normal human body temperature on the Celsius scale is around 37 °C, whereas on the Fahrenheit scale it is 98.6 °F. 2. A body temperature of 101 degrees cannot be on the Celsius scale because that would indicate extreme fever leading to unconsciousness or death, so it refers to the Fahrenheit scale. **Answer:** She means it on the Fahrenheit scale, as normal human body temperature is 98.6 °F and 101 °F indicates a mild fever. > Common mistake: Confusing the numerical values of normal human body temperature between Celsius and Fahrenheit scales. ## Frequently asked questions ### How many questions are there in the new NCERT Class 6 Science Chapter 7 Let us enhance our learning exercise? The exercise contains 14 questions covering various formats such as fill in the blanks, multiple choice questions, numerical problems, short answer, and very short answer questions. You can find step-by-step solutions for all these questions in the free PDF available on this SwaVid page. ### Which specific topics are covered in the Chapter 7 questions for Class 6 Science? The questions test your understanding of choosing the correct thermometer based on range, interpreting temperature records, and distinguishing between laboratory and clinical thermometers. Other key concepts include reading thermometers, temperature scales, thermometer division calculations, and drawing thermometer scales. ### Which question type is considered the hardest in this chapter and how should I approach it? Numerical problems and thermometer division calculations are often found to be the most challenging by students. To approach these, carefully note down the given values, apply the correct temperature scale formulas, and double-check your calculations. Detailed explanations for solving these are provided in SwaVid's free PDF on this page. ### How should I write my answers for Class 6 Science Chapter 7 to score full marks in exams? To score full marks, write clear definitions, state formulas explicitly for numerical problems, and draw neat, labeled diagrams when asked to draw a thermometer scale. Following the structured answers given in SwaVid's free PDF on this page will help you present your solutions effectively. ### Is the free PDF of NCERT solutions for Class 6 Science Chapter 7 available here? Yes, the complete free PDF containing accurate answers for the new NCERT book based on the NCF 2023 syllabus for the 2026-27 session is available on this SwaVid page. You can easily download it to prepare thoroughly for your exams. ## Related pages - [Class 6 Science chapters](https://www.swavid.com/science/class/6) Solutions written by SwaVid, a personal AI tutor for Class 6 to 10 Maths and Science. Practise this chapter free: https://www.swavid.com/start/student