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प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
Magnesium is used in making light weight alloys of aluminium.
पर्याय
True
False
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उत्तर
True.
APPEARS IN
संबंधित प्रश्न
Fill in the blanks:
Metals react with acids to produce _________ gas.
Give a reason for Alkali metals are good reducing agents.
State one use of Copper.
Name an alloy of lead and tin.
Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.
What elements are present in steel? How are the properties of steel different from those of pure iron?
What is an alloy? Give two examples of alloys.
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
Statements given below are incorrect. Write the correct statements :
Zinc is used for making power transmission wires.
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Hydrochloric acid,
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Sulphuric acid
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Water.
Write name.
Alloy of sodium with mercury.
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.
Complete the following flowchart.
Which one of the following four metals would be displaced from the solution of its salts by other three metals?
Name one metal and one non-metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K (37°C)
Which of the following metals can displace the other two metals from their salt solutions?
Silver and copper are very good conductors of electricity.
Why are metalloids called semimetals?
