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प्रश्न
The metals which are found in both free state as well as combined state are ______.
पर्याय
Gold and platinum
Platinum and silver
Copper and silver
Gold and silver
उत्तर
The metals which are found in both free state as well as combined state are Copper and silver.
APPEARS IN
संबंधित प्रश्न
Give reasons for the following.
Sodium and potassium are stored in kerosene.
State one use of Copper.
State one use of Iron.
Fill in the following blank with suitable word:
The electrical conductivity and melting point of an alloy is ........... than that of pure metals.
Explain how, a reduction reaction of aluminium can be used for welding cracked machine parts of iron. Write a chemical equation for the reaction involved.
Write ‘true’ or ‘false’ for the following statement :
Silver is used to make electric cables.
State two important uses of following metal
Uses of tin
State why telegraph poles are painted with aluminium paint.
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
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.
