Question

pel Supildle de prepalcu.
5. Which of the changes given below are chemical changes? Give reasons for your
answers.
a. Cutting grass b. Burning toast c. Making tea with a tea bag and water d. Frying an
egg e. Combustion of petrol in a car f. Ironing of clothes g. Preparing custard from
milk h. Drying wet hair​

Answer 1

Answer:

b. burning toast -you can not unburn it

c. Making tea with a tea bag and water-you can't get the the back into the bag but water you used in tea can come back by the process of evaporation

d. Frying an egg -you can't get back the unfried egg.

e. Combustion of petrol in a car - You can't get back petrol used in car

g. Preparing custard from milk -you can't get the milk back used in custard