Hi^^^ Answer^^^
No repittion^^
In Step 2, the students were required to use chromatography and distillation as the two separating techniques.
Example^^^
A mixture is a substance that contains two or more components which are mixed together but they are not chemically combined to each other.
For example, sand, salt and steel shavings in water is a mixture.
So, in order to separate its components we can do the following.
Step 1: Pass a magnet over the mixture to remove the steel. As this will remove steel from mixture.
After that, adding water will make a solution in which sand and salt are present.
Step 2: Add water to the sand/salt mixture and stir to dissolve the salt.
Step 3: Pour the mixture through a filter to separate the sand.
Step 4: Heat the mixture to evaporate the water.
Thus, we can conclude that correct order to separate the given mixture is 3, 4, 2, 1.
