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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
पर्याय
copper
aluminium
iron
gold
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उत्तर
iron
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संबंधित प्रश्न
Chemical changes are accompanied by changes in energy.
Classify the following as physical or chemical change :
Formation of curd from milk
Classify the following as a physical or a chemical change.
Drying of wet clothes
What will you take into account while identifying the following?
A chemical change in a substance.
Give four reasons why the burning of a magnesium ribbon in the air is considered a chemical change.
Select the chemical changes from the following list of changes
Boiling of milk.
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
Give the reason why the following is considered as chemical changes.
A piece of magnesium strip is dropped into a beaker containing dilute hydrochloric acid.
Name the following.
The product obtained during a physical change when water converts from a liquid into a solid.
Which of the following is a physical change?
