Chemical Reaction
Chemical Reactions:
The processes in which a substance or substances undergo to produce new substances with new properties are known as chemical reactions. For example, when calcium carbonate is heated, calcium oxide (lime) and carbon dioxide are formed.
The breaking up of calcium carbonate into calcium oxide and carbon dioxide is, thus, a chemical reaction because calcium carbonate changes into substances calcium oxide and carbon dioxide.
The processes in which a substance or substances undergo to produce new substances with new properties are known as __________________ . | |||
| Right Option : B | |||
| View Explanation | |||
Which of the following are correct : (a) The processes in which a substance or substances undergo changes to produce new substances with new properties are known as chemical reactions. (b) The breaking up of calcium carbonate into calcium oxide and carbon dioxide is a chemical reaction. (c) When calcium carbonate is heated, calcium oxide (lime) and carbon dioxide are formed. | |||
| Right Option : D | |||
| View Explanation | |||
Change of milk to curd is a : | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [10]
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