Which among the following is a set containing only mixtures ?

1. gold, common salt, water, alloy
2. alloy, ink, honey, ice-cream
3. alloy, mercury, air, sea water
4. milk, duralumin, brass, silver.

Copper is not a part of the alloy :

1. brass
2. bronze
3. steel
4. duralumin

Which of the following is a mixture ?

1. Sugar
2. Honey
3. Common salt
4. Iron sulphide

Identify the mixtures and compounds from the following list:

Air, water, sugar, salt, milk, tea, alcohol, honey, soil, glucose.