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प्रश्न
Tick (√) the most appropriate answer.
Graphite is used :
पर्याय
for sterilisation of water
for making stainless steel
as dry lubricant
in making electric bulbs
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उत्तर
as dry lubricant
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संबंधित प्रश्न
Which property of graphite is utilised in making electrodes?
State one use of the following metal:
Gold
The atomic number of an element X is 12.
- What must an atom of X do to attain the nearest inert gas electron configuration?
- Which inert gas is nearest to X?
How does the electrical conductivity of copper alloys, brass and bronze, differ from that of pure copper?
How are the properties of an alloy different from those of the constituent elements?
Mention two uses of the following metals and non-metals
Gold
Give two uses of Germanium
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
Write ‘True’ or ‘False’ in front of following statement.
Brass is an alloy of copper and zinc and has lustrous yellow colour.
State two important uses of following metal.
Uses of copper
When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.
Give reasons for the following:
Most metals conduct electricity well.
With reference to the following metal state its use in daily life:
Magnesium
State why telegraph poles are painted with aluminium paint.
Name the following:
A metal used in flexible pipes.
Which one of the following is an example for a metal?
The metal which is liquid at room temperature is ______.
Why are bells made of metals?
Why do metals appear shiny?
Compare the conductivity of metals and non–metals.
