Question

pls try to ans 14th question

Answer 1

burning of candle: chemical and irreversible
ice to water: physical and reversible
milk to curd : chemical and irreversible
melting of butter: physical and reversible
swolloing of food : chemical and irreversible
clay is molded into different shape : physical and reversible
milk goes sour : chemical and irreversible
boiling water: physical and reversible
burning wood:chemical and irreversible
digesting food : chemical and irreversible

Answer 2

Here is your answer:

1# Conversion of milk to curd ⇔ chemical change⇔slow⇔irreversible

2# Meting of ice ⇔ physical change⇔fast[depends on temperature]-reversible

3# Digestion of food⇔chemical⇔slow⇔irreversible

4# Boiling of egg (coagulation)⇔chemical⇔fast⇔irreversible

5# Crumbling of paper⇔physical⇔fast⇔reversible

6# Rusting of iron⇔chemical change⇔slow⇔irriversible

7# Boiling water⇔physical change⇔fast⇔reversible

8# Decomposition of waste⇔chemical⇔slow⇔irreversible

9# Dissolving of sugar⇔physical change⇔fast⇔reversible

10# Evaporation of water⇔physical change⇔fast⇔reversible.