Advertisements
Advertisements
प्रश्न
What is an amalgam?
Advertisements
उत्तर
Amalgam is an alloy of mercury with one or more metals. Sodium along with liquid mercury is known as sodium amalgam. Amalgam of mercury with tin, silver and zinc is widely used in dental filling.
APPEARS IN
संबंधित प्रश्न
Fill in the blanks:
Metals react with acids to produce _________ gas.
Fill in the following blank with suitable word:
The alloy in which one of the metals is mercury is called an ...............
Give reasons
Graphite is used in the leads of pencils
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
Write name.
Alloy of sodium with mercury.
What is it made from? Why?
Pots and pans
Can you store pickle in an aluminium utensil? Give reason.
______ is the first scientist who used the term element.
In the following figure, you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the basis of this fact.
- ______ is a metal.
- Metals are good ______ of electricity.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the metallic element.
