6th Grade > Chemistry
SEPARATION OF SUBSTANCES MCQs
Total Questions : 98
| Page 10 of 10 pages
Answer: Option C. ->
evaporation
:
C
Seawater contains large amounts of common salt. Near the sea-shore, the seawater is collected in shallow pits. In a few days, the water evaporates by absorbing heat from sunrays, leaving behind the salt. This salt is collected and further processed and purified.
:
C
Seawater contains large amounts of common salt. Near the sea-shore, the seawater is collected in shallow pits. In a few days, the water evaporates by absorbing heat from sunrays, leaving behind the salt. This salt is collected and further processed and purified.
Answer: Option B. ->
Filtration
:
B
Chalk powder is insoluble in water. It can be separated through filtration using a filter paper. Chalk powder particles can not pass through it. So, it will be collected on filter paper and water in a container placed below.
:
B
Chalk powder is insoluble in water. It can be separated through filtration using a filter paper. Chalk powder particles can not pass through it. So, it will be collected on filter paper and water in a container placed below.
Answer: Option B. ->
saturated
:
B
A solution is saturated when no more solute can be dissolved in it at a specific temperature.
:
B
A solution is saturated when no more solute can be dissolved in it at a specific temperature.
Answer: Option D. ->
Winnowing
:
D
During winnowing the mixture is released from a height. The wind blows away the lighter component while the heavier component falls down. Thus, resulting in the separation of the components of the mixture.
:
D
During winnowing the mixture is released from a height. The wind blows away the lighter component while the heavier component falls down. Thus, resulting in the separation of the components of the mixture.
Answer: Option B. ->
decantation
:
B
Decantation is a process to separate a mixture of solid and liquid or immiscible liquids. Oil is much less dense than water. It floats above the surface of water, when mixed together. Thus, they can be separated by decantation easily.
:
B
Decantation is a process to separate a mixture of solid and liquid or immiscible liquids. Oil is much less dense than water. It floats above the surface of water, when mixed together. Thus, they can be separated by decantation easily.
Answer: Option B. ->
Sieve
:
B
Sieves are used to separate gravel from sand. Sieving is a simple technique for separating particles of different sizes. Depending upon the types of particles to be separated, sieves with different sizes of holes are used.
:
B
Sieves are used to separate gravel from sand. Sieving is a simple technique for separating particles of different sizes. Depending upon the types of particles to be separated, sieves with different sizes of holes are used.
Answer: Option C. ->
Sieving
:
C
:
C
Sieving is a method in which two or more components of different sizes are separated from a mixture using a sieve. A sieve has fine pores in it which let small-sized component to pass through it but hold back larger sized components.
Answer: Option B. ->
Filtration
:
B
Filtration is a method for separating an insoluble solid from a liquid.
For example: When a mixture of sand and water is filtered, the sand stays in the filter paper (residue) while the water passes through the filter paper and gets collected below.
:
B
Filtration is a method for separating an insoluble solid from a liquid.
For example: When a mixture of sand and water is filtered, the sand stays in the filter paper (residue) while the water passes through the filter paper and gets collected below.
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