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प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Formation of manure from leaves is a physical change.
विकल्प
True
False
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उत्तर
This statement is False.
Explanation:
The formation of manure from leaves is a chemical change.
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संबंधित प्रश्न
Fill in the blank.
Melting of ice is a _______ change.
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
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Explain by writing a word equation.
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What is a chemical change? Give two examples of chemical change?
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(a) reaction between a solid and a liquid
(b) reaction between two gases
Give two examples of exothermic reactions seen in everyday life.
Give reason for the following:
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between the reactants and products, formed in the chemical reaction.
Match the following:
| 1. | Sodium Chloride | a. | CaSO41/2H2O |
| 2. | Calcium sulphate dihydrate | b. | C2H5Oh |
| 3. | Magnesium sulphate hydrate | c. | CaSO4.2H2O |
| 4. | Calcium sulphate hemihydrate | d. | NaCl |
| 5. | Phenol | e. | MgSO4.H2O |
State whether the following statement is true or false:
When a candle burns, both physical and chemical changes take place.
Galvanization is a process in which ______ is coated as a layer of iron.
