Filtration

Q. _______ is used to separate fine sand from coarse sand in construction sites.

1. Winnowing
2. Handpicking
3. Sieving
4. Threshing

Q.

Draw labeled diagrams of the following:
To show the separation of sawdust from water.

Q. Question 1 (d)
Which separation techniques will you apply for the separation of the following?
d. Different pigments from an extract of flower petals.

Q. How would you obtain clear water from a sample of muddy water?

Q. For separating the components of a mixture of sand, oil and water, technique has to be followed by technique.

1. separating funnel
2. filtration
3. evaporation
4. sieving

Q.

What are different ways to separate solid mixtures? [2 MARKS]

Q. Filter paper is helpful in separating insoluble particles from a liquid.

1. solid
2. liquid
3. gas

Q. During the purification of water, the large insoluble solid impurities are allowed to settle down at the bottom. This process is known as __________.

1. sedimentation
2. filtration
3. chlorination
4. crystallisation

Q. Sand from water :

1. Filtration
2. Distillation
3. Chromatography
4. all of these