Question

Four students took separately the mixture of sand, common salt and ammonium chloride in beakers, added water, stirred the mixture well and then filtered. They reported their observations as shown below. Student
As residue
In the filtrate
I
Ammonium chloride
Sand Common salt
II
Common salt, Sand
Ammonium chloride
III
Sand, Ammonium chloride
Common Salt
IV
Sand
Ammonium chloride, Common salt
Who reported the observations in the correct order of the components as residue and in the filtrate ?
(1) I
(2) IV
(3) III
(4) II

Answer 1

Answer:

3

Explanation:

Sand doesn't dissolve, so it is residue. But ammonium chloride and common salt dissolve in water, so they are present in the filtrate.