According to the defination of pure substance, which of the following

1.	According to the defination of pure substance, which of the following isa pure substance 1.ice2.mercury3.iron4.all of these
Answer» ANSWER: All of these is a PURE SUBSTANCE .

According to the defination of pure substance, which of the following isa pure substance 1.ice2.mercury3.iron4.all of these

Answer»

All of these