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प्रश्न
Give reasons for the following.
Sodium and potassium are stored in kerosene.
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उत्तर
Sodium and potassium are stored in kerosene because they are highly reactive elements. They can easily catch fire even when in contact with air.
संबंधित प्रश्न
What elements are present in steel?
Give reasons
Aluminium is used in making aircrafts.
State two important uses of following metal:
Uses of aluminium
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Hydrochloric acid,
Write scientific reason.
Generally the ionic compounds have high melting points.
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.
Name the following:
The most reactive halogen.
Assertion: Mercury is solid in room temperature.
Reason: Mercury is a non-metal.
A is a reddish-brown metal, which combines with O2 at < 1370 K gives B, a black coloured compound. At a temperature > 1370 K, A gives C which is red in colour. Find A, B, and C with reaction.
All gases are ______.
