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प्रश्न
With reference to the following metal state its use in daily life:
Magnesium
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उत्तर
- It is used in fireworks as it burns with a dazzling light.
- Photography: Magnesium produces a bright flash. It is used in strip form.
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संबंधित प्रश्न
State one use of Silver.
Mention two uses of the following metals and non-metals
Aluminium
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.
Statements given below are incorrect. Write the correct statements :
Zinc is used for making power transmission wires.
Why is hydrogen placed with alkali metals?
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Oxygen
Write name.
The nonmetal having electrical conductivity.
The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.
Give reasons for the following:
Most metals conduct electricity well.
What is it made from? Why?
Electric cables
With reference to the following metals state their use in daily life metal:
copper
Give a reason why a green deposit is seen on the surface of an article of copper
State a specific reason for using copper in electrical cables
Match the columns.
| Group A | Group B |
| 1) Copper and Zinc | a) Brass |
| 2) Copper and Tin | b) Bronze |
| c) Stainless steel |
What is ductility?
The ability of metals to be drawn into thin wire is known as
______ is the first scientist who used the term element.
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
Why are bells made of metals?
All gases are ______.
