Question

Ms. Shukla, a science teacher gave different mixtures to four groups of
students to separate their components. Which group was not following the
correct method?
a) Group I was separating a mixture of ethyl alcohol and water by using
separating funnel.
b) Group 3 was separating a mixture of iron pins and sand by using a
magnet
c) Group 2 was separating a mixture of ammonium chloride and sodium
chloride using sublimation
d) Group 4 was separating mud particles suspended in water using
sedimentation and decantation​

Answer 1

I hope you are understand my solution

P.

Answer 2

Group I is not using the correct method to separate the given mixture of ethyl alcohol and water by using a separating funnel.(option - a)

• ethyl alcohol completely dissolves in water as they both are liquids and dissolve each other, therefore, it's not possible to separate the two by using a separating funnel.
• A separating funnel can be used to separate two liquids that do not dissolve each other. for example water and kerosene.
• other options are correct as ammonium chloride is sublime and NaCl is not Hence sublimation used.
• Similarly, decantation and sedimentation can also separate solids from water.
• metal can be separated from the non-metallic substances, using magnets hence group 3 is also using the correct method.