Question

Which of the following is a separation technique to separate kerosene oil, water and salt?
A.) Separation
B.) Evaporation
C.) Distillation
D.) All of these

Answer 1

Hint: In order to deal with this question first we will define the term separation technique, further then according to it we will discuss the technique which is used to separate kerosene oil, water and salt.

Complete step-by-step answer:
A separation process is a method that converts a chemical substance mixture or solution into two or more distinct mixtures of the product. At least one of the separation results is enriched in constituents of one or more of the source mixture. For certain cases the mixture can be entirely separated into pure constituents by a separation. Separations exploit differences between the constituents of a mixture in the chemical properties or physical properties (such as size, shape, mass, density, or chemical affinity).
Many systems are categorized according to the particular distinctions they use to accomplish separation. If the desired separation cannot be accomplished with any single variation, several operations will also be mixed to reach the desired result.
Using a separating funnel, kerosene oil and water may be segregated because they are 2 immiscible liquids which belong to the separation method alternative A.
We do know that distillation or evaporation which is option B and option C will isolate the mixture of water and salt.
Hence, all of the given methods that are: separation, distillation and evaporation are involved in the separation technique to separate kerosene oil, water and salt.
So, the correct answer is option D.

Note- Evaporation is a process used to separate homogeneous mixtures by dissolving one or more of the salts. The process pushes out the solids from the liquid materials. In general, the process requires heating the mixture up until there is no solvent left.
Distillation is a widely used method of separating mixtures based on differences in the conditions necessary to change the chemical step of the mixture. The liquid must be heated to move components of specific boiling points into the gas phase and insulate a liquid mixture.