Question

Which one is a pure substance :(i)Milk (ii)Ghee (iii) Blood (iv) sugar

Answer 1

Answer:

Sugar

Explanation:

Milk is heterogenous and it also contains fats, glucose, proteins etc. So, it is impure.

Ghee also has many components same as milk, hence, it is also impure

Blood has plasma, RBC, WBC etc. Also, It is a colloid, so it is impure.

But sugar is a compound. sugar - $C_{12} H_{22} O_{11}$

so, compound is pure hence option (iv) is correct.