Which Substance Is Used In The Thermometer

October 30, 2023 Post a Comment

Which substance is used in the thermometer

Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion.

Which substance is used in thermometer and why?

Mercury has a high coefficient of expansion and hence is very sensitive to temperature changes . This is why it is used in thermometers .

Which fluid is used in thermometer?

Mercury is commonly used in thermometers as it expands and contracts uniformly and rapidly when heated or cooled respectively.

Why alcohol is used in thermometer?

The alcohol thermometer is an alternative to the mercury-in-glass thermometer and has similar functions. Unlike mercury, alcohol is less toxic and will evaporate away quickly if subjected to high temperatures. Therefore, it is used to measure low temperatures.

What is a thermometer Class 6?

A thermometer is an instrument which is used to measure the temperature of a substance. It is a measure of how excited the molecules of a substance are.

Which mercury is used in thermometer?

Mercury is used in thermometers because It has a high coefficient of expansion so that even a small rise in temperature brings about sufficient expansion which can be detected in the capillary of the calibrated part of the thermometer.

What is red liquid in thermometer?

Mercury is a silver-white to gray substance. If your thermometer is filled with a red liquid, your thermometer contains red dyed alcohol or mineral spirits and not mercury. These are safer alternatives to mercury fever thermometers.

Why is mercury or alcohol used in temperature?

Statement I: Mercury thermometer can measure higher temperature as its boiling point is high. Statement II: Alcohol thermometer can measure low temperatures because it's per degree expansion is less.

Why alcohol and mercury is used in thermometer?

because of high cofficient of expansion. mercury and alcohol is used in thermometer because they expand at a fixed rate when it is heated , hence a slight change in temperature will increase the expansion a long way up the tube..

What are the 7 types of thermometer?

There are different types, but not all thermometers are right for your child.

Digital thermometers.
Ear (or tympanic) thermometers. ...
Infared thermometers. ...
Strip-type thermometers. ...
Mercury thermometers.

How are thermometer made?

How are modern thermometers made? The most common kind of thermometer consists of a liquid, such as alcohol or mercury, in a very thin, hollow glass tube. It works because of the fact that liquids expand more than solids as their temperatures increase.

How do you read a Class 7 thermometer?

Read the thermometer keeping the level of mercury along the line of sight. Handle the thermometer with care. If it hits against some hard object, it can break. Don't hold the thermometer by the bulb while reading it.

Is mercury in a thermometer liquid or gas?

These non-mercury fever thermometers are just as good as mercury thermometers and much safer. Mercury is a very dense element that is the only metal to exist as a liquid at room temperature. It has a high electrical conductivity and it expands and contracts evenly with changes in temperature.

What is liquid in gas thermometer?

Usually, mercury and petrolate are the most common fluids in this kind of thermometer. Mercury and petrolate usually can measure temperature in a range of −40 to +900°C and −200 to +260°C, respectively [2].

Is only mercury used in thermometer?

There are liquid-in-glass thermometers that contain a non-mercury silver substance Galinstan®. Galinstan liquid consists of tin, indium, and gallium.

What is blue liquid in thermometer?

The blue spirit thermometers listed contain non-toxic isoamyl benzoate and dye.

What is the green liquid in a thermometer?

If the fluid is silver colored, it is mercury. If it's red, it's alcohol, and if it's blue or green, it's the new environmentally safe fluid. Mercury is a toxic element and when a mercury thermometer is broken, special care must be taken to clean it up.

Which is the Colour liquid in thermometer?

You can identify the liquid in a thermometer based on its color. Silver liquid indicates that the thermometer contains mercury, while red liquid is alcohol to which red coloring has been added. Although uncommon in modern thermometers, a clear color indicates water.

What substance is used in the thermometer tube?

In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.

Why is water not used in thermometer?

Water cannot be used in thermometer because of its higher freezing point and lower boiling point than other liquids . If water is used in a thermometer , it will start phase change at 0oC and 100oC and will not measure temperature , out of this range .