Question

Fill in the blanks :-


1). A chemical reaction in which the rate of reaction is altered in the presence of a catalyst is called ________.

2). Melting of wax is a ________ change.

3). Burning of magnesium is a _______ change.

4). A chemical reaction which takes place with the absorption of heat is called an ________ reaction.

5). If water is sprinkled on anhydrous copper sulphate , it turns _______ in colour.​

Answer 1

Explanation:

3ueuryd8rojr8rirjru8ro4jrirrkrkrjjrruriririri

Answer 2

Answer:

1. reversible reactions

2.physical change

3.chemical change

4.endothermic reaction

5.blue

Explanation:

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