What are the advantages and disadvantages of mercury and alcohol thermometer?
A thermometer comparison
| advantages | disadvantages |
|---|---|
| mercury vapour is poisonous | |
| Alcohol thermometer (compared to a mercury thermometer) | |
| lower freezing point (-114 �C) | less durable (alcohol evaporates) |
| larger coefficient of expansion | alcohol can polymerise |
What is the advantage of using alcohol over mercury in thermometer?
Advantages of using alcohol over mercury as thermometric liquid are: i) Alcohol has greater value of temperature coefficient of expansion than mercury. ii) it’s freezing point is below –100°C. Thus, alcohol thermometer is more sensitive than mercury thermometer and can be used to measure the temperature below –40°C.
What are the advantages and disadvantages of mercury and alcohol?
Difference between Advantages And Disadvantages Of Mercury And Alcohol Thermometer
| Advantages | Disadvantages |
|---|---|
| lower freezing point (-1140C) | less durable (alcohol evaporates) |
| larger coefficient of expansion | alcohol can polymerise |
| less hazardous | fluid loss by evaporation hard to avoid |
| lower boiling point (600C) |
What is the difference between a mercury thermometer and an alcohol thermometer?
Main Difference – Alcohol vs Mercury Thermometers A thermometer is a device that is used to measure the temperature. The main difference between alcohol and mercury thermometer is that the bulb of mercury thermometer is filled with mercury whereas the bulb of alcohol thermometer is filled with an alcohol.
Why is alcohol thermometer better than mercury thermometer?
Advantages. It is suitable to measure low temperatures because of its freezing point is low. It is less toxic than mercury thermometer and hence high on safety factor for human and environment. It has a greater value of temperature coefficient of expansion than a mercury thermometer.
What are the benefits of thermometer?
Benefits of Digital Thermometers
- Digital thermometers can read temperatures fast and with high accuracy.
- They are handy and easy to use; you can even carry the thermometer in your bag.
- The display is easy to read.
- A digital thermometer isn’t expensive.
- They do not require any special maintenance.
What are the advantages of using alcohol instead of mercury in a thermometer for Class 8?
The advantage of using alcohol instead of mercury in a thermometer is as follows:
- It is colorless.
- It is a bad conductor of heat.
- It wets the wall of the capillary glass tube of the thermometer.
- Its expansion rate is not uniform.
- Its boiling point is 78°C.
- It has low density.
What are the benefits of alcohol?
Moderate alcohol consumption may provide some health benefits, such as:
- Reducing your risk of developing and dying of heart disease.
- Possibly reducing your risk of ischemic stroke (when the arteries to your brain become narrowed or blocked, causing severely reduced blood flow)
- Possibly reducing your risk of diabetes.
What are the advantages and disadvantages of clinical thermometer?
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. The disadvantages are that they break easily and there is risk of mercury poisoning if the glass tube breaks.
What are the disadvantages of using mercury as a thermometric substance in thermometer?
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 –39°C and above 357°C. ii) Mercury thermometer cannot be used in very cold regions like arctic regions because it freezes below a temperature of 39o C.
Why is it better to take an alcohol thermometer instead of a mercury thermometer while you travel to the mountain region?
Mercury has a greater coefficient of thermal expansion than alcohol. This means a column of mercury will expand and rise more than a column of alcohol for the same temperature change. As a result, you can get finer readings with mercury. Mercury is poisonous, and a broken thermometer in the mouth is not good.
What are the advantages of mercury thermometer Class 7?
Class 7 Question It’s used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it’s used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.
