Copyright 2022 Physics Wallah Pvt. fragile. from - 260 0 C to 1200 0 C. Disadvantages of Platinum Resistance thermometer:- 1) High Cost . Advantages of using mercury in thermometers : i) It does not stick to the glass tube. Necessary cookies are absolutely essential for the website to function properly. The most similar alternatives to mercury fever thermometers are battery- and solar-powered digital thermometers. A .gov website belongs to an official government organization in the United States. Advantages And Disadvantages Of A Mercury-In-Glass Thermometer. Disadvantages of Mercury: It cannot measure very low temperature, because its freezing point is high (-40C) Mercury is poisonous, so it harmful if its tube is broken. In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. Disadvantages. Advantages of using mercury in a thermometer It is opaque and shining. Alcohol is transparent and this makes hard to read the thermometer. 1. ii) Mercury thermometer cannot be used in very cold regions like arctic regions because it freezes below a temperature of 39 o C. The disadvantages are that they break easily and there is risk of mercury poisoning if the glass tube breaks. Low thermal expansion coefficient. questions, KVPY Advantages: Quick response, versatility, portability, non-invasiveness. What are the advantages and disadvantages of using digital thermometer over mercury thermometer for temperature measurement? Same expansion coefficient at all temperatures. Notes Class 12, Zoology The cookie is used to store the user consent for the cookies in the category "Other. As they become suspended in the air, the molecules draw some of the heat from the hotter air, cooling it down as the water and air find equilibrium. class 12, Class 12th What are advantages and disadvantages of mercury thermometer? It is very sensitive in expansion. Solutions for class 9, NCERT Solutions exam, JEE Solutions, Entrance exam Mercury is the only one in liquid state at room temperature. A liquid-in-glass thermometer is the simplest and most commonly employed type of temperature measurement device. One advantage of expanding metal is its use in thermometers. A slight amount of mercury is placed into the base of the thermometer, and as heat warms the base of the thermometer, it increases the mercury level, pushing it up a narrow tube so we can physically read the increase on the thermometer; however, at a slow pace. 1. class 10, RS This website uses cookies to improve your experience while you navigate through the website. The disadvantage is they do not flatter the human skin color thereby making them not an ideal . Questions Physics, Important It does not have uniform expansion. The two liquids used in liquid in glass thermometers are mercury and alcohol. smartech('identify', ''); Get instant access to high-quality material. The disadvantages of mercury as thermometric liquid are: i) its temperature coefficient of expansion is very low and it cannot be used to measure the temperature below -39C and above 357C. Materials, Class -39 0C). MCQ, Important Advantages of Mercury as a thermometric liquid. It is a metal, so it's a good conductor of heat. If there is no liquid in your thermometer, for example, if it uses a metallic strip or coil to measure temperature (like most meat thermometers do), it is not a mercury thermometer. class 12 Quiz, Advantages And Disadvantages Of Mercury And Alcohol Thermometer, Fahrenheit Scale - Daniel Gabriel Fahrenheit, Important Questions CBSE Class 10 Science. 10 Geography, History Class Friend: Of course, a mercury thermometer is more accurate. previous year papers, Olympiad The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Mercury thermometers can be used to determine body, liquid, and vapor temperature. display is harder to read. Easy To Use The simplicity of a simple barometer makes it very user friendly. Suggest Corrections. You should choose a thermometer that is easy to use and read. Board Details, MP Board of Secondary exam, Study 35.7 (96.3F) for oral temperature. Alcohol is a volatile liquid. It can be used both orally and under the arm. Class 12, Maths They are common in many households, schools, and medical facilities. This cookie is set by GDPR Cookie Consent plugin. for Math's, Worksheet Mercury is easily the best liquid to use, for 5 important reasons. This is called a thermometric property. Advantages. What are the disadvantages of mercury? The Facts Many people are concerned about microwaves because of the fear generated by the word. paper Class 8 Math's, Sample Is not the advantage of using mercury in thermometer? In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. wise Class 8 Math's Quiz, Chapter wise You can carry it with you anywhere and use it with any device. Verma & VK Agarwal Biology Solutions, Lakhmir This cookie is set by GDPR Cookie Consent plugin. Like all other thermometers, mercury-in-glass thermometers also have their own strengths and weaknesses you should be aware of. It is one of the oldest thermometers available in the industry. wise, Chemistry temperature changes, hence is sensitive. ii) Mercury thermometer cannot be used in very cold regions like arctic regions because it freezes below a temperature of 39o C. It has a wide range of temperature expansion. Advantages of mercury thermometers: Mercury thermometers provide reliable readings. First the kerosene thermometer, measurement range is about - 30 ~ 150 , and the index value is bigger, cannot be measured accurately, the famous Galileo thermometer is kerosene thermometer. -It expands uniformly (linear expansion) and responds quickly to temperature changes, hence is sensitive. Advantages of mercury as a thermometric liquid. A clinical or medical thermometer is a thermometer used to measure human body temperature. It has a low freezing point and a high boiling point. Requested URL: byjus.com/question-answer/what-are-the-advantages-and-disadvantages-of-using-mercury-in-thermometer-5-marks-1/, User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36. Disadvantages of mercury as a thermometric liquid Laser thermometers disadvantages. Sharma solutions, NTSE Disadvantages of mercury thermometers If the bulb cracks and mercury spills out, it is extremely dangerous to humans and the environment Mercury is difficult to remove and can pollute the area where it has spilt It is unable to detect frigid temperatures Its thermal co-efficient is low. Learn more about how to tell if there is mercury in your fever thermometer. 1 What are advantages and disadvantages of mercury thermometer? Quiz for class 11, Chapter wise We also use third-party cookies that help us analyze and understand how you use this website. Thermistor. Mercury thermometer has mercury inside the bulb as the temperature sensitive fluid, and in alcohol thermometers, it is an alcohol. 10 ICSE, Revision Biology Notes, Chapter Chemistry Notes, Class 8 Selecting these types makes for very good narrow span measurement, the temperatureversuss resistance characteristics is shown below. It gives results quickly - has a fast response time. 5 Is a mercury thermometer the most accurate? Liquid-In-Glass Thermometers. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. 4) It has uniform expansion. What are the advantages and disadvantages of clinical thermometer? Agarwal's solutions, RD Because metal is an excellent heat conductor, it reacts quickly to temperature changes. What are the advantages and disadvantages of a mercury in glass thermometer. Radiometers are used for remote observations. Sample Papers Math's, CBSE The thermistor need of shielding power lines. Previous year papers, Olympiad causes most liquids to expand, which is how a thermometer works. It is good conductor of heat. For more information about phasing out industrial mercury thermometers, visit EPA's Phasing Out of Mercury Thermometers Used in Industrial and Laboratory Settingspage. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. 2. Education, West Bengal This cookie is set by GDPR Cookie Consent plugin. Previous Year Papers, Revision three advantages of mercury in glass thermometer. So use of mercury thermometers should be handled carefully to prevent exposure to this element. -It is a good conductor of heat and therefore the whole liquid reaches the temperature of the surroundings quickly. 2) Measurements of temperature can be made over a wide range of temperature i.e. 8 Biology Notes, Class -It does not wet (cling to the sides of) the tube. 3. Advantages of mercury as a thermometric liquid. When used correctly, the digital thermometer is accurate enough to meet daily needs and safer than the mercury thermometer. It is very reflective, so it's easy to see and to read accurately. Highly sensitivity allows it to work well over a small and narrow temperature range. -It expands uniformly (linear expansion) and responds quickly to temperature changes, hence is sensitive. Advance previous year papers, NEET In addition, it is a lightweight and . The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". A mercury-in-glass thermometer can measure high temperature (up unique curriculum that is the best fit for every student. It is known that the price of an infrared thermometer is indeed more expensive than other types of thermometer. To date, multiple ASTM standards have been updated to approve the use of mercury-free alternatives for temperature measurement. Its price is very high. Mercury thermometers are used in households, laboratory experiments, and industrial applications. Secure .gov websites use HTTPS Class 8 Science quiz, Chapter wise (g). Sample papers, CBSE reaches the temperature of the surroundings quickly. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. The price of an infrared thermometer ranges from 500k to 1,000K IDR. Talk to Our counsellor: Give a missed call, Physics It will be very dangerous if broken. places where the temperature gets very low. 10 Math's Notes, Class The table below compares the various thermometers. 10, CBSE What qualifies you as a Vermont resident? Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. cannot be used for thermograph. The excitation current should be low to avoid self heating. Material Physics, Revision It may cause a cut if the glass of the thermometer breaks down. There are some advantages of bimetallic thermometer which are given below. Mercury thermometers are designed utilizing the idea that mercury expands with heat. Mercury has a high boiling . Heat 11 Chemistry Notes, Maths rises, the mercury expands and covers more room in the These cookies track visitors across websites and collect information to provide customized ads. Advantages of mercury as a thermometric liquid. Formulas, About Main, More Mercury has a very low saturation vapor pressure. NEET, Entrance Disadvantages of thermocouples: Temperature measurement with a thermocouple involves the measurement of two temperatures, the junction. -It does not wet (cling to. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Questions Class 8 Science, R.S It expands evenly as the temperature rises. (down to -115 0C, the freezing point of alcohol; and its boiling What are the advantages of mercury thermometer Class 7? engineering exam, More 9 Math's Notes, Class 9 3) It does not stick to glass-sides. The average time taken by the digital thermometer to record the temperature was 88.03 seconds (95% CI-54.58 to 121.49).Conclusions: Digital thermometer is as accurate as mercury in glass . Math's Solutions, Worksheet for thermometers. Which is better digital or mercury thermometer? Disadvantages: Mercury is toxic . The resistance temperature characteristics are non linear. Physics Notes, Class 9 Advantages of using mercury in a thermometer. smartech('register', '6ff79e6140cd0fd5d1c68cbc03f76f50'); Notes for class 11 Physics, Chemistry They do not need any additional power source to operate. There are two general types of mercury thermometers that measure body temperature: Alternatives to mercury fever thermometers, Cleanup and disposal after breaking a thermometer, Learn more about how to tell if there is mercury in your fever thermometer, NISTs February 2011 press release announcing the change, final rule incorporating updated ASTM International (ASTM) standards into EPA regulations (PDF), View a list of the updated ASTM standards, Phasing Out of Mercury Thermometers Used in Industrial and Laboratory Settingspage, specific state laws, resolutions and declarations, What to do when a mercury fever thermometer breaks/spills, How to recycle and dispose of mercury products, Oral/rectal/baby thermometers, containing about 0.61 grams of mercury, Basal temperature thermometers (used to track slight changes in body temperature), containing about 2.25 grams of mercury. The biggest advantage of alcohol is that it is not as toxic as mercury so if the alcohol thermometer breaks you will not be poisoned. Its price is very high. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Mercury-in-glass thermometers are simple to use and read. This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics". Following are the benefits or advantages of Data Loggers: It can be used in remote or dangerous situations. The disadvantages of mercury as thermometric liquid are: i) its temperature coefficient of expansion is very low and it cannot be used to measure the temperature below -39C and above 357C. 1) It is toxic in nature, even small traces of mercury in blood is harmful. Notes for class 7, Science test for class 7 Science, Chapter Questions Biology, CBSE Answer (1 of 4): Mercury is dangerous when exposed to any amount. some also contain alchohol but not many due to its We are not permitting internet traffic to Byjus website from countries within European Union at this time. View a list of the updated ASTM standards. -It does not wet (cling to the sides of) the tube. papers class 8 science, Important formulas, Math's Singh physics solutions, Lakhmir It's a bit more expensive than alcohol. class 6 Math's, Worksheet for Theyre often cheaper and more accurate, especially at higher temperatures. There are some disadvantages of thermistor which are given below. What happens when a solid as it turns into a liquid? Exemplar for Math's, CBSE thermometer. Also They both have advantages and disadvantages: They don't require batteries. It does not store any personal data. The second is the mercury thermometer, it has wide measurement range, high accuracy, simple structure and so on. It has a wide range of temperature expansion. Common household uses of mercury thermometers include fever thermometers and oven, candy, and meat thermometers. 8 SST Notes, Ask It has a wide temperature range between to degree Celsius. -It is a good conductor of heat and therefore the whole liquid reaches the temperature of the surroundings quickly. Class 12 notes, Chemistry Its price is very high. Advantages of mercury as a thermometric liquid. Since alcohol is non toxic, alcohol thermometers are much safer to use . One of the disadvantages of the alcohol thermometer is that its accuracy is a bit low. Advantages: Disadvantages: Dual lasers assist with target area identification for more precise non-contact temperature measurement. Mercury thermometers may be used in many applications, including chemical experiments, water and acid baths, blood banks, ovens, and incubators. It doesn't wet the glass, so you don't get inaccurate readings if the temperature is falling. does not work below -39C (Hg freezing pount). You can use Earth911's Recycling Locatorto find a mercury recycling center near you. & Reasoning, Class reactions organic chemistry, Bihar School Examination Quiz for Class 6 Math's, Online Class 8, Sample -It expands uniformly (linear expansion) and responds quickly to formulas, Physics It gives off a dangerous gas and is flatly dangerous and it will make a walking humanoid zombie out of you that you would wish was dead. By clicking Accept All, you consent to the use of ALL the cookies. Low temperature may be associated with certain conditions such as sepsis, shock and hypothyroidism or be due to excessive outside stay in cold weather. -It is a good conductor of heat and therefore the whole liquid reaches the temperature of the surroundings quickly. Mercury thermometers can be used to determine body, liquid, and vapor temperature. glass tube with the readings/markings etched into the glass so it Important Questions Math's pdf, MCQ Botany Notes, NCERT What are the relative advantages and disadvantages of mercury and alcohol in thermometers? With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. 4 Why are thermometers preferred to mercury thermometers? The advantages of these types of thermometers is that they are cheap, easy to read, can be submerged in liquids, require very little maintenance and are reliable. online Quiz for class 10, Chapter wise 2. . -It expands uniformly (linear expansion) and responds quickly to temperature changes, hence is sensitive. You cannot access byjus.com. You can read more about the impact the decision will have in NISTs February 2011 press release announcing the change. Don't use plagiarized sources. Infrared thermometer facilitates temperature measurement from a distance without contact . These can all be used orally, rectally, or in the armpit. temperature, while an alcohol-in-glass thermometer can only slowly It is not suitable for large temperature range. Aggarwal solution, RD How many babies did Elizabeth of York have? Entrance exam, JEE Disadvantages of mercury thermometers: Mercury is toxic. Anonymous answered. It expands linearly and less than alcohol and any other liquid. The cookie is used to store the user consent for the cookies in the category "Performance". MCQ, Physics Class 11 Notes, Class For NEET, Questions class Medical Exam, Olympiads What are the two advantages of using mercury in thermometer? -It has a high freezing point therefore it cannot be used in 2. For example, a conventional PRT designed to provide 100 at 0 C has a resistance in the neighborhood of 80 at -50 C and 120 at 50 C, or a sensitivity of about 0.4 per degree. Official websites use .gov There are two types of liquid-in-glass thermometers: 1) Mercury-In-Glass Thermometers 2) Alcohol-In-Glass Thermometers. It is opaque and shiny. Hence, the slightest change in temperature is notable when its used in a thermometer. Advantages Comparatively inexpensive Wide temperature range (-270 C to 2100 C) Small (down to 0.25 mm diameter) Disadvantages Small signals, limited temperature resolution (0.01 C to 1 C) in some models Thermocouple wires must extend from the measurement point to the readout or ice-point junction. (e). Often more expensive than other thermometer types. yes some glass thermometers do that is mercury in glass However, you may visit "Cookie Settings" to provide a controlled consent. Advantages: Small size Very high sensitivity (Select range) Polarity insensitive No cold junction compensation Wide selection of sensors Board, Tamil Nadu The following are some of the disadvantages, including: 1. Simple working principle. Thermocouples are used for in situ observations at locations wired to a computer network. It is a good conductor of hest, so it quickly absorbs heat to attain the temperature of the object. Solutions For Class 6, NCERT Temperature affects the amount the mercury is spread out. However, mercury is poisonous and alcohol is NOT poisonous. Advantages of Thermocouple: They are capable of being used to directly measure temperatures up to 2600C; and The junction of the thermocouple can be grounded and brought into direct contact with the measured material. Physics Notes, Class
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