13. You have learnt about a process by which pure water can be obtained from saltwater. Which is that process?
13. You have learnt about a process by which pure water can be obtained from saltwater. Which is that process?
The correct option is A distillation
Explanation for correct option:
Option (A): Distillation involves the conversion of liquid water into a vapour that is subsequently condensed back to liquid form. This process can remove any impurity in water. Thus, it is used in obtaining pure water from saltwater. This particular process of salt removal is also known as desalination.
Explanation for incorrect options:
Option (B): Sedimentation is the process of allowing particles in dirty water to settle down due to gravity. Only heavier particles such as sand and gravel can be filtered out using this process.
Option (C): Decantation is the process for the separation of mixtures of immiscible liquids or of a liquid. This process can separate oil and water or mud and water.
Option (D): Filtration is a process in which we clean the water using a filter medium. The filter separates out any impurity which is larger than the holes in the filter. A filter can remove small dirt particles from the water but cannot remove the dissolved salt.
Hence, option (A) is the correct answer. Distillation is the process by which pure water can be obtained from saltwater.
distillation
Explanation for correct option:
Option (A): Distillation involves the conversion of liquid water into a vapour that is subsequently condensed back to liquid form. This process can remove any impurity in water. Thus, it is used in obtaining pure water from saltwater. This particular process of salt removal is also known as desalination.
Explanation for incorrect options:
Option (B): Sedimentation is the process of allowing particles in dirty water to settle down due to gravity. Only heavier particles such as sand and gravel can be filtered out using this process.
Option (C): Decantation is the process for the separation of mixtures of immiscible liquids or of a liquid. This process can separate oil and water or mud and water.
Option (D): Filtration is a process in which we clean the water using a filter medium. The filter separates out any impurity which is larger than the holes in the filter. A filter can remove small dirt particles from the water but cannot remove the dissolved salt.
Hence, option (A) is the correct answer. Distillation is the process by which pure water can be obtained from saltwater.
