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प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
Magnesium is used in making light weight alloys of aluminium.
विकल्प
True
False
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उत्तर
True.
APPEARS IN
संबंधित प्रश्न
State one use of the following metal:
Copper
State one use of the following metal:
Aluminium
State one use of the following metal:
Mercury
Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.
Which of the following alloys contains mercury as one of the constituents?
Mention two uses of the following metals and non-metals
Gold
Give reasons
Graphite is used in the leads of pencils
State two important uses of following metal
Uses of tin
State two important uses of following metal:
Uses of aluminium
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:
Sulphuric acid
When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.
State the position of the following in the periodic table:
Halogens
What is it made from? Why?
Pots and pans
Give a reason why a green deposit is seen on the surface of an article of copper
Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.
Name the following:
A halogen which is a solid at room temperature.
Write the name.
Two highly reactive metals-
Which of the following is not a metal?
Why are bells made of metals?
