Question

7. Which of the following processes are
chemical changes? Give reasons.
a). Making a Salt Solution.
b). Adding Hydrochloric Acid to Marble
stone.
c). Evaporation of water.
d). Adding phenolphthalein indicator to acid
solution.
e). Respiration
f). Ripening of a Mango.
g). Breaking of Glass.​

Answer 1

Answer:

d) and b) and a)

Explanation:

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Answer 2

Answer:

No.B,D,And,E.

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