Seperation of Substances

Heavier and lighter components of a mixture can be separated by winnowing.

• True

• False

Thereshing is done by

• Beating

• Bullocks

• Machines

• All of these

Handpicking can be used only when quantity of impurities is not very large.

• True

• False

Which method is used to separate pebbles and stones from sand

• Handpicking

• Winnowing

• Seiving

• Any of these

_____________ process is used to separate pebbles and stones from sand at construction sites

Sieving is used when the component of mixture have different sizes.

• True

• False

________ consist of only one type of particle

• Mixture

• None of these

• Pure Substances

Answer explanation

Because it contains only one type of particle.

____ are formed when two or more substances are mixed together in any ratio.

• Mixtures

• components

• condensation

• none of these

Husk is separated from heavier seeds of grain

• Winnowing

• Hand picking

• Sieving

• None of the above

Threshing is a method by which grains are separated from the ______

• stone

• chalk

• stalks

• none of these