Question

Which one of the following substances is not a mixture? a) tin , b) sea water , c) soil , d) air

Answer 1

tin is an element and it's made of bronze ..

and remaining all are mixtures..

Answer 2

Tin is not a mixture.

• Tin has the symbol of Sn. It is metal.
• Seawater is a mixture of water, salt and other substances.
• Soil is a mixture of different types of soil, sand, mud and other particles.
• Air is a mixture of different types of gases like nitrogen, hydrogen, oxygen and other gases.
• Hence the correct option is a.