What method(s) of separation would you use to separate the following substances? a) Sand and iron filings b) Sand, water, and salt c) Sawdust and sand d) Five-rupee and two-rupee coins e) Peanuts and beans ) Water and salt g) Wheat grains and straw pieces h) Water and mud
Answers
a) Sieving- Iron filings being more smaller theough the sieve plate and sand remains on the plate as residue.
b) For sand and salt solution (slat and water)- sedimentation and decantation.
For salt solution- distilltion in distillation flask.
Thus we get sand from sedimentation and decantation, and pure water and salt from distilltion in distillation flask.
c) Winnowing- the saw dust will blow away
d) Hand picking
e) Hand picking
f) Distillation in distillation flask- water collects in the flask below after condensing from steam, leaving behind salt in the distillation flask.
g) Winnowing- straw pieces fly away
h) Sedimentation and decantation- mud settles below water being more dense, and water can be extracted by decantation.
Hope this helped