Q. No 1) Melting of ice is
a) a chemical change
b) a periodic change
c) an irreversible change
d) none of these
Q. No. 2) Cooking of food involves
a) a chemical reaction
b) a physical change
c) formation of no new substance
d) all of these
Q. No. 3) Water is converted into vapour by the process of
a) Evaporation
b) Condensation
c) Boiling
d) Melting
Q. No. 4) Which of the following changes cannot be reserved?
a) hardening of cement
b) freezing of ice-cream
c) opening a door
d) melting of chocolate
Answers
Answered by
0
Answer:
1)phy
2)che
3) evaporation
4)hardening of cement
Answered by
1
Answer:
1 ka a and 2c and 3a and 4a this is the answers
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