Question

Objective Type Questions.
A. Ticks) the correct answer
1. Melting of butter is which kind of
change?
a. Physical
3. Two or more reactants combine to
form a new product in
a Exothermic reaction
b. Chemical
b. Single displacement reaction
Both a and b.
C. Combination reaction
d. Neither a norb
d. Decomposition reaction
4. During exothermic chem cal reactions,
heat is
2. Which of these chemical reactions
involve the replacement of an element
or ion from one compound to another?
a. Peleased
a. Double displacement reaction
b. Absorbed
b. Single displacement reaction
C. No effect
c. Oxidation-reduction reaction
d. First absorbed and then released
d. Decomposition reaction​

Answer 1

Answer:

ans 1 a physical change

2 c no effect