Question

Choose the correct answer.

Melting of ice is a
a) Chemical change b) Reversible change c) Irreversible Change d) None of the above
Water is converted into vapour by the process of
a) Cooling b) Freezing c) Boiling d) Melting
The change which can be reversed.
a) Melting of ghee b) Cutting of tree c) Burning of candle d) Blooming of flower
Cooking of food involves
a) A chemical change b) A physical change c) Formation of new substance
d) All of these
Bursting of balloon is a
a] Chemical change as it is irreversible b) Reversible change
c) Physical change as no new substance is formed d) None of these
Rolling of chapatti and baking of chapatti are the changes that
a) Can be reversed and cannot be reversed respectively b) Cannot be reversed
c) Cannot be reversed and can be reversed respectively d]Can be reversed
Freezing of water to ice is a
a) Temporary change b) chemical change c) irreversible change d) all of these
The change which cannot be reversed
a) Hardening of cement b) Opening a door c) Freezing of ice cream
d) Melting of chocolate
An example of reversible change
a) Boiling b) Melting c) Baking of chapatti d)Rusting
An example for irreversible change.
a) Burning of paper b) Folding the paper c) Freezing d) Pulling rubber band

Fill in the blanks.

A change is called as ____________when it cannot be reversed .
Absorption of water by a sponge is an example of ______________ change.
Fog on the surface of glass is a ________________ change.
Germination of seed is ____________change.
Gaps left between railway tracks to avoid any accidents due to _______________of metal.

Answer 1

1. b

2. c

3. a ( Think so )

4. a

5. c

6. b

7. a

8. a

9. b

10. a

1. Irreversible

2. Reversible

3.  Don't Know, sorry

4. Irreversible or chemical

5. Thermal Expansion

Hope it helps! Pls mark me as brainliest :)

Answer 2

Answer:

1.) melting of ice is a reversible change

2.) water is converted into vapour by the process of boiling

3.) the change which can be reversed is melting of ghee

4.) cooking of food involves a chemical change

5.) busting of balloon is a physical change as new substance is not formed

6.) rolling of Chapati and baking of Chapati are the changes that be reverse

7.) freezing of water to Ice is a temporary change

8.) the change which cannot be reversed is hardening of cement

9.) an example of reversible change is melting

10.) an example of Irreversible change is burning of paper

fill in the blanks

1.) a change is called as Irreversible when it cannot be reversed

2.) section of water by a sponge is an example of reversible change

3.) germination of a seed is a chemical change