REVISION SCIENCE CHAPTER5

Husk is separated from heavier seeds of grain

• Winnowing

• Hand picking

• Sieving

• None of the above

Grains from stalk is separated by

• Winnowing

• Threshing

• Sieving

• Hand picking

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

• True

• False

Separation of sugar from tea can be done with filtration.

• True

• False

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

Which method is used to separate pebbles and stones from sand

• Handpicking

• Winnowing

• Seiving

• Any of these

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

• True

• False

Filtration is a method to separate the components of

• Solution

• Mixture of a liquid and an insoluble substance

• Both (a) and (b)

• Pure substance

Thereshing is done by

• Beating

• Bullocks

• Machines

• All of these

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

• True

• False