Which technique can be used to detect and identify traces of poison present in the stomach wash of a person?

Name the process by which the various ‘dyes’ (coloured materials) present in black ink can be separated.

Which technique is used in a washing machine to squeeze out water from wet clothes while drying?

Fill in the following blanks with suitable words:

(a) Miscible liquids are separated by ……….. .

(b) Immiscibl liquids are separated by using a ………….. .

(c) A mixture of kerosene and petrol can be separated by ………… .

(d) The separation of liquids by fractional distillation is based o the difference in their ………….. .

(e) The gases of air can be separated by fractional distillation of liquid air because they have different ………… .

(f) A heterogeneous mixture of liquid and solid is conveniently separated by …….. .

(g) If a mixture contains iron filings as one of the constituents, if can be separated by using a …………. .

How will you separate a mixture containing sand and sugar?