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प्रश्न
Fill in the blank
A metal that gives dazzling effect to crackers when they explode is ______
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उत्तर
A metal that gives dazzling effect to crackers when they explode is magnesium.
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संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
Give reasons for the following.
Sodium and potassium are stored in kerosene.
State one use of the following metal:
Aluminium
State one use of the following metal:
Iron
Which property of ‘solder’ alloy makes it suitable for welding electrical wires?
Give reasons
Gold is mixed with copper and nickel.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
Salt of silver, such as ________ is used for making photographic films.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
A solution of a metal in mercury is called ________
State two important uses of following metal
Uses of tin
State two important uses of following metal
Uses of lead
Write name.
Molecular formula of the common ore of aluminium.
Write name.
The nonmetal having electrical conductivity.
What is it made from? Why?
Electric cables
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Name the following:
A metal used in flexible pipes.
The ability of metals to be drawn into thin wire is known as
Which one of the following metals do not react with cold as well as hot water?
Metals are usually solids or gases at room temperature.
Give an example of a metal which
- is liquid at room temperature.
- is the best conductor of heat.
The metals which are found in both free state as well as combined state are ______.
