10
Question
(i) Reaction between calcium oxide and water is a ...... reaction.
(ii) Action of strong heat on mercuric oxide is a ...... reaction.
(i) Reaction between calcium oxide and water is a ...... reaction.
(ii) Action of strong heat on mercuric oxide is a ...... reaction.
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Solution
The correct option is C (i) combination (ii) decomposition
The reaction between calcium oxide and water gives calcium hydroxide and it is an example of a combination reaction. A combination reaction is a type of reaction in which two or more reactants combine to give a single product.
Mercuric oxide on strong heating decomposes to form mercury and oxygen and it is an example of a decomposition reaction. A decomposition reaction can be defined as a chemical reaction in which one reactant breaks down into two or more products.
The reaction between calcium oxide and water gives calcium hydroxide and it is an example of a combination reaction. A combination reaction is a type of reaction in which two or more reactants combine to give a single product.
Mercuric oxide on strong heating decomposes to form mercury and oxygen and it is an example of a decomposition reaction. A decomposition reaction can be defined as a chemical reaction in which one reactant breaks down into two or more products.
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