The two liquids which are often used in thermometer on experiment basic is known as

The two liquids that are often used in thermometers for experiments are mercury and alcohol. Thermometers are used to measure temperature and work by using the principle that liquids expand when they are heated and contract when they are cooled. Mercury and alcohol are both good choices for use in thermometers because they have high thermal expansion coefficients, which means that they expand and contract significantly in response to temperature changes. Mercury has been traditionally used in thermometers because it has a large thermal expansion coefficient and is a good conductor of heat. However, mercury is also toxic and can be dangerous if it is accidentally spilled or ingested. Alcohol is an alternative to mercury that is less toxic and safer to handle. Water can also be used in thermometers, but it has a lower thermal expansion coefficient than alcohol and mercury, which limits its accuracy and usefulness in some applications. In summary, both mercury and alcohol are commonly used in thermometers for experiments due to their high thermal expansion coefficients, with mercury being a traditional choice and alcohol being a safer alternative.