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प्रश्न
State two important uses of following metal:
Uses of silver
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उत्तर
Uses of silver :
- It is used for making coins and ornaments.
- It is used for making high quality glass mirrors.
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संबंधित प्रश्न
Give a reason for Alkali metals are good reducing agents.
What is an amalgam?
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.
What elements are present in steel? How are the properties of steel different from those of pure iron?
How are the properties of an alloy different from those of the constitutent elements?
Aluminium is not used to make :
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
______ is a liquid metal.
State two important uses of following metal:
Uses of zinc
State the position of the following in the periodic table:
Alkali metals
State the position of the following in the periodic table:
Iron and zinc
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white crystalline solid which decrepitates on heating leaving a residue which fuses with the glass and evolves two gases one of which is coloured and acidic.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.
Write the name.
Two highly reactive metals-
Write scientific reason.
Meena’s mother uses lemon or tamarind for cleaning copper vessels turned greenish.
Complete the following flowchart.
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.
Metals and non–metals are used for making ______, ______ and ______.
Silver and copper are very good conductors of electricity.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the metallic element.
