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प्रश्न
Give an example of a chemical reaction for the following situation:
A change in colour is observed
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उत्तर
Reaction between copper sulphate and iron metal – blue solution of copper sulphate changes to the green solution of ferrous sulphate.
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संबंधित प्रश्न
Fill in the blank.
The formation of gas bubbles in a liquid during a reaction is called ......................
Define precipitation reaction.
| Reactants | Products | Type of chemical reaction |
| BaCl2(aq) + ZnSO4(aq) | H2CO3(aq) | Displacement |
| 2AgCl(s) | FeSO4(aq) + Cu(s) | Combination |
| CuSO4(aq) + Fe(s) | BaSO4↓ + ZnCl2(aq) | Decomposition |
| H2O(l) + CO2(g) | 2Ag(s) + Cl2(g) | Double displacement |
Explain by writing a word equation.
Bubbles are seen on adding lemon juice to baking soda.
Explain,giving one example of the following chemical changes:
Reversible reaction
What do you observe when dilute sulphuric acid is added to the following:
Sodium Sulphide
Give balanced equation for the following conversion affected by heat alone on the substance:
Zinc carbonate to zinc oxide
What kind of a change is associated with decaying of a plants?
Classify the following as physical or chemical properties
Most metal oxides form alkalis on interacting with water.
______ is the chemical name of slaked lime.
