If the fish is being fried in a neighbouring home, we can smell it sitting in our own home. Name the process which brings this smell to us.

When we stand next to a burning fire, we can feel the heat on our face. Name the process which transfers this heat from fire.

When food containing fat or oil is not used and left for a long time, their smell and state changes. Name the process which is responsible for this change . List two methods to prevent or slow down the above change.

Name the process by which we can get fresh water from sea water.

Name some salts which are used in your home?

(a) When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance quickly spreads in the entire room. Name the process involved in this. (b) A girl is cooking some food in the kitchen. The smell of food being cooked soon reaches her brother's room. Explain how the smell could have reached her brother's room.

An organic compound A is widely used as a preservative in pickles and has a molecular formula C_(2)H_(4)O_(2) . This compound reacts with ethanol to form a sweet smelling compound B. (i) Identify the compound A. (ii) Write the chemical equation for its reaction with ethanol. (iii) Name the products formed. (iv) Name the process involved in the reaction. (v) How can we get back the compou A from B.

How can we smell perfume sitting several meters away from the source? (AS_1)

How can we smell perfume sitting several meters away from the source? (AS_1)

How can we smell perfume sitting several meters away from the source? (AS_1)