Question

why do we use the following?
(a)filter paper
(b)separating funnel
(c)sublimating flask
(d)alum
(e)sieve

Answer 1

a)we use filter paper to remove the extra stain which is present on the slide...
b)we use separating funnel used in liquid-liquid   extraction  to separate (partition) the components of a mixture into two immiscible  solvent  phases of different densities ...
c)we use sublimating flask to store the hot / cool substance..to be hot / cool..
d)we use alum for crack heels..
e)we use sieve for reducing soft solids to a pulp.

Answer 2

Answer:

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