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प्रश्न
What is an amalgam?
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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.
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संबंधित प्रश्न
Fill in the following blanks with suitable words:
A metal having low melting point is ..................... but a non-metal having very high melting point is ..............
Mention two uses of the following metals and non-metals
Gold
Tick (√) the most appropriate answer.
Graphite is used :
State two important uses of following metals:
Uses of iron
Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3
With reference to the following metals state their use in daily life metal:
copper
Write the name.
Two highly reactive metals-
Which one of the following metals do not react with cold as well as hot water?
Which of the following metals are obtained by electrolysis of their chlorides in molten state?
- Na
- Ca
- Fe
- Cu
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
