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प्रश्न
Fill in the blank
A metal that gives dazzling effect to crackers when they explode is ______
उत्तर
A metal that gives dazzling effect to crackers when they explode is magnesium.
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संबंधित प्रश्न
Give reasons for the following.
Copper cannot displace zinc from its salt solution.
State one use of Aluminium.
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.
Mention two uses of the following metals and non-metals
Gold
Give reasons
Graphite is used in the leads of pencils
Give reasons
Gold is mixed with copper and nickel.
State two important uses of following metal
Uses of zinc
Write name.
Molecular formula of the common ore of aluminium.
Write scientific reason.
Anodes need to be replaced from time to time during the electrolysis of alumina.
Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3
What is it made from? Why?
Electric cables
With reference to the following metals state their use in daily life metal:
copper
With reference to the following metals state their use in daily life metal:
iron
Name the following:
A metal used in flexible pipes.
Halogen reacts with acid.
Write scientific reason.
Meena’s mother uses lemon or tamarind for cleaning copper vessels turned greenish.
Can you store pickle in an aluminium utensil? Give reason.
Which of the following property is generally not shown by metals?
In the given figure, you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the basis of this fact.
- ______ is a metal.
- Metals are good ______ of electricity.
Metals have high melting points.
