Question

What Have I Learnt 1 Objective Type Questions. A. Tick (M) the correct answer. 1. Melting of butter is which kind of change? a. Physical b. Chemical c. Both a and b d. Neither a nor b 2. Which of these chemical reactions involve the replacement of an element or ion from one compound to another? a. Double displacement reaction b. Single displacement reaction c. Oxidation-reduction reaction d. Decomposition reaction 3. Two or more reactants combine to form a new product in: e. Exothermic reaction b. Single displacement reaction c. Combination reaction d. Decomposition reaction 4. During exothermic chemical reactions, heat is: a. Released b. Absorbed c. No effect d. First absorbed and then released​

Answer 1

Answer:

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Explanation:

Answer 2

Answer:

1) physical

2) Double displacement reaction

3)combination reaction

4)released