Name the device used by doctors to liste to our heartbeats.

What is a thermometer ? Name the thermometer used by doctors and nurses to measure the temperature of human body.

A white powder is used by doctors to support fractured bones. Write the name and chemical formula of powder.

Name the device used to measure the volume of an irregular solid.

Name the device used to measure the volume of an irregular solid.

Name the device used these days in place of electric fuses in electrical circuits.