Distillation(General Knowledge > General Science ) Questions and Answers

Question 1. When using distillation to obtain pure water from sea water
  1.    Water has a lower boiling point than salt
  2.    Water has a higher boiling point than salt
  3.    Water has a lower melting point than salt
  4.    Water has a higher melting point than salt
Explanation:-
Answer: Option A. -> Water has a lower boiling point than salt
Question 2. For distillation to work the substances in the mixture must have
  1.    the same melting point
  2.    the same freezing point
  3.    Different melting points
  4.    Different boiling points
Explanation:-
Answer: Option D. -> Different boiling points
Question 3. If you wanted to make pure drinking water from sea water, what process would you use?
  1.    filtration
  2.    distillation
  3.    evaporation
  4.    Both A & B
Explanation:-
Answer: Option B. -> distillation
Question 4. What is a example of imiscible liquid?
  1.    water and milk
  2.    Oil and water
Explanation:-
Answer: Option B. -> Oil and water
Question 5. What is the first step in the process of distillation?
  1.    Collecting the distillate
  2.    Heating a mixture to boiling point
  3.    Passing vapor through the condenser
  4.    Reducing the temperature of a mixture
Explanation:-
Answer: Option B. -> Heating a mixture to boiling point
Question 6. In a solution of salt water, what is the solute?
  1.    Salt
  2.    Water
  3.    Salt water
  4.    All of above
Explanation:-
Answer: Option A. -> Salt
Question 7. What word describes a solid that dissolves in a liquid? Select all that apply
  1.    soluble
  2.    solute
  3.    insoluble
  4.    Both A & B
Explanation:-
Answer: Option D. -> Both A & B
Question 8. What is the property that allows mixtures of liquids to be separated using fractional distillation?
  1.    boiling point
  2.    melting point
  3.    solubility
  4.    density
Explanation:-
Answer: Option A. -> boiling point
Question 9. Crude oil can be separated into several liquids that have different boiling points using which process?
  1.    simple distillation
  2.    fractional distillation
  3.    filtration
  4.    All of above
Explanation:-
Answer: Option B. -> fractional distillation
Question 10. What name is given to a liquid that will dissolve a particular solid?
  1.    solvent
  2.    solution
  3.    soluble
  4.    All of above
Explanation:-
Answer: Option A. -> solvent
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