Formation of dew

Bending of glass tube

Crushing of iron

All of these.

No new substance is formed.

The change is reversible.

The change is temporary.

All of these.

Physical change

Chemical change

Reversible change

None of these ,

Rusting of Iron

Burning of paper

Cooking of food

All of these.

Physical

Chemical

Both (a) and (b) are correct.

None of these.

Physical

Chemical

Both (a) and (b) are correct.

None of these.

Oxygen

Carbon dioxide

Sulphur dioxide

Nitrogen dioxide

Reddish – Brown Decomposition on Iron Objects

Browning of Vegetables and Fruit Surface

Reaction Between Vinegar and Baking Soda

All of these.

Lime water has milk in it

Lime water has oxygen in it

Exhaled air contain carbon dioxide

None of the above

Lime water has milk in it

Lime water has oxygen in it

Exhaled air contain carbon dioxide

None of the above