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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.
संबंधित प्रश्न
Brass is an alloy of copper and ______.
Give reasons
Gold is mixed with copper and nickel.
State two important uses of following metal
Uses of tin
State the position of the following in the periodic table:
Iron and zinc
Give the general characteristics of:
Alkaline earth metals with reference to
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Write name.
Molecular formula of the common ore of aluminium.
Write scientific reason.
Pine oil is used in froth flotation.
Give reasons for the following.
- Aluminum foils are used to wrap food items.
- Immersion rods for heating liquids are made up of metallic substances.
- Sodium and potassium are stored in kerosene.
- Mercury is used in thermometers.
Which metals are liquid at room temperature?
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the metallic element.
