The correct sequence is 1, 3, 2. First, sublimation separates naphthalene. Next, filtration separates sand from the salt solution. Finally, evaporation separates common salt from water and gives the remaining salt.
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(i) Total mixture is 500 g. Sugar concentration is 15 percent, flour is 84 percent and sodium hydrogencarbonate is 1 percent by mass. (ii) Copper is 84 g and zinc is 36 g.
Suspended particles in muddy water are larger and heavier, so they settle at the bottom with time. Milk contains much smaller colloidal particles that remain uniformly dispersed and do not settle easily when left undisturbed.