SEPARATION OF SUBSTANCES

winnowing is used to separate which of the following?
1. husk from wheat
2. salt from water
3. iron fillings from flour
4. tea leaves from water
jewellers separate pearls of different sizes using
1. sedimentation
2. decantation
3. seiving
4. filtration
How is it possible to separate sugar mixed with wheat flour?
1. seiving
2. filtration
3. sedimentation
4. decantation
to increase the speed of sedimentation we use
1. alum
2. water
3. glass rod
4. vessel
which process is used to separate bacteria from water?
1. sedimentation
2. filtration
3. churning
4. decantation
the process used to separate barn from flour
1. sedimentation
2. decantation
3. seiving
4. churning
which method is used to separate solids dissolved in liquids?
1. decantation
2. condensation
3. evaporation
4. centrifugation
threshing is done by
1. beating
2. machines
3. bullocks
4. all of the above
churning is used to separate
1. butter from milk
2. stones from milk
3. iron fillings from milk
4. bacteria from milk
the process of conversion of water vapours into liquid is called
1. evaporation
2. condensation
3. decantation
4. sedimentation