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प्रश्न
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
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उत्तर
CO2 carbon dioxide.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Burning of paper and wood
Write short answer.
Give two examples of periodic changes
State whether the following is physical or chemical changes.
lightning —
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
Separate the following into physical and chemical changes :
Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing electric current, Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water
Give reasons why – separation of mixtures e.g. iron from a mixture of iron and sulphur is a physical change, but heating a mixture of iron and sulphur is considered a chemical change.
Give the reason why the following is considered as chemical changes.
Copper carbonate on heat gives copper oxide and carbon dioxide.
Sublimation of Iodine is a ______.
Tearing of sheet of paper into pieces is ______ By the process of Heating of water, change.
______ is the Universal Solvent.
