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प्रश्न
State two important uses of the following metal.
Uses of magnesium
Write the uses of magnalium metal.
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उत्तर
- It burns with a dazzling white flame and hence is used in fireworks.
- It is used in the making of alloys, such as magnalium. This alloy is used in making the frame of aeroplanes.
संबंधित प्रश्न
What is an amalgam?
Name two alloys of iron. What elements are present in these alloys?
What is a thermite reaction? Explain with the help of an equation.
Which of the following alloys contains mercury as one of the constituents?
Give reasons
Gold is mixed with copper and nickel.
Statements given below are incorrect. Write the correct statements :
Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
Write ‘True’ or ‘False’ in front of following statement.
Brass is an alloy of copper and zinc and has lustrous yellow colour.
Tick (√) the most appropriate answer.
Graphite is used :
Name a metal which is best conductor of electricity :
State two important uses of following metals:
Uses of iron
State the position of the following in the periodic table:
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 name.
Alloy of sodium with mercury.
Write name.
Molecular formula of the common ore of aluminium.
What was Mendeleev's basis for the classification of elements?
What is it made from? Why?
Electric cables
What is it made from? Why?
Ornaments
With reference to the following metals state their use in daily life metal:
iron
With reference to the following metals state their use in daily life metal:
Silver
Name the following:
A metal used in packaging.
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Halogen reacts with acid.
Which one of the following is an example for a metal?
The most abundant element in the universe is ____________.
______ is the first scientist who used the term element.
Name two soft metals which can be cut with a knife.
In the following 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.
Sodium is a hard metal.
