Question

(a) Give one word for the following:

i) Liquid which is collected in the beaker during filtration.

ii) An artificial fibre that makes a silky fibre used in tooth brush.

iii) Method used to separate saw dust and water.

iv) Process of obtaining pure liquid by using the difference in their boiling points.

v) A fine grey powdered mixture of limestone and clay.

vi) Methods used to separate the coloured substances.

vii) The machine used in laboratory for centrifugation

viii) Number of atoms present in one molecule.

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Answer 1

Answer:

(a) i) Filtrate

ii) Nylon

iii) Filtration

iv) Evaporation

v) Cement

vi) Paper chromatography

vii) Centrifuge tubes

viii) 2