Which of the following mixtures can be separated by sedimentation followed by decantation?
Which of the following mixtures can be separated by sedimentation followed by decantation?
The correct option is D Mud in water
To separate a mixture by sedimentation, followed by decantation, we need to identify substances that are:
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Insoluble in water: An insoluble substance will not dissolve in water. It will either sink or float.
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Denser than water: A denser substance will sink to the bottom and will form two separate layers.
The water can be separated, leaving behind the sediments.
Lemon juice: Lemon juice is soluble in water. It does not form separate layers when left undisturbed. Hence, it cannot be separated by sedimentation and decantation.
Husk: Husk is insoluble and less dense than water. During decantation, the husk particles would pour out along with the water. Hence, it cannot be separated by sedimentation, followed by decantation.
Mud: Mud is insoluble and denser than water. When left undisturbed, the mud particles settle down, forming a separate layer. Water can be carefully poured into another container, separating the mud.
Salt: Salt is completely soluble in water. Hence, we cannot use sedimentation and decantation to separate salt from water.
To separate a mixture by sedimentation, followed by decantation, we need to identify substances that are:
-
Insoluble in water: An insoluble substance will not dissolve in water. It will either sink or float.
-
Denser than water: A denser substance will sink to the bottom and will form two separate layers.
The water can be separated, leaving behind the sediments.
Lemon juice: Lemon juice is soluble in water. It does not form separate layers when left undisturbed. Hence, it cannot be separated by sedimentation and decantation.
Husk: Husk is insoluble and less dense than water. During decantation, the husk particles would pour out along with the water. Hence, it cannot be separated by sedimentation, followed by decantation.
Mud: Mud is insoluble and denser than water. When left undisturbed, the mud particles settle down, forming a separate layer. Water can be carefully poured into another container, separating the mud.
Salt: Salt is completely soluble in water. Hence, we cannot use sedimentation and decantation to separate salt from water.
