Methods Of Separation: Chemistry Quiz
(67).jpg "Methods Of Separation: Chemistry Quiz - Quiz")
.
Questions and Answers
- 1.
Methods of separation for the components of solid-solid.
- A.
Dissolution
- B.
Filtration
- C.
Evaporation
- D.
Crystallization
- E.
All above
Correct Answer(s)
B. Filtration
D. CrystallizationExplanation
The methods for separating components in solid-solid mixtures are filtration and crystallization. Filtration involves passing the mixture through a filter to separate smaller solid particles from larger ones. Crystallization is used when components have different solubilities; the mixture is dissolved, and as the solvent evaporates, less soluble components crystallize out as solid crystals. Dissolution and evaporation are typically used for solid-liquid mixtures, not solid-solid separation.Rate this question:
-
- 2.
.Methods of separation for the components of solid-liquid.
- A.
Dissolution
- B.
Filtration
- C.
Evaporation
- D.
Fractional distillation
Correct Answer
B. FiltrationExplanation
Filtration is a method of separation for the components of solid-liquid mixtures. It involves passing the mixture through a filter, which allows the liquid to pass through while retaining the solid particles. This separation technique is commonly used when the solid particles are larger in size and cannot dissolve in the liquid. The solid particles are collected on the filter, while the liquid passes through and is collected separately. Filtration is an effective method for separating solid impurities from liquids.Rate this question:
-
- 3.
Methods of separation for the components of liquid-liquid. (miscible)
- A.
Dissolution
- B.
Filtration
- C.
Evaporation
- D.
Fractional distillation
Correct Answer
D. Fractional distillationExplanation
Fractional distillation is the correct answer because it is a method used to separate the components of a liquid-liquid mixture that are miscible. Miscible liquids are those that can mix together in any proportion. In fractional distillation, the mixture is heated, and the vapors of the different components have different boiling points. The vapors are then condensed and collected separately, resulting in the separation of the components based on their boiling points. This method is commonly used in industries such as petroleum refining to separate different components of crude oil.Rate this question:
-
- 4.
Methods of separation for the components of liquid-liquid. (immiscible)
- A.
Separating funnel
- B.
Filtration
- C.
Evaporation
- D.
Distillation
Correct Answer
A. Separating funnelExplanation
The most appropriate method for separating the components of immiscible liquid-liquid mixtures is the "separating funnel." This method takes advantage of the difference in density between the two liquids, allowing them to form distinct layers in the funnel. The less dense liquid rises to the top, and the denser liquid settles at the bottom. By opening the stopcock at the bottom of the funnel, one liquid can be drained into a separate container, leaving the other behind. This method is specifically designed for separating immiscible liquids.Rate this question:
-
- 5.
Find the Rf value if y (start line-solvent front) is 10cm and the x (start line-spot) is 5cm.
- A.
0.4
- B.
0.5
- C.
0.6
- D.
0.7
Correct Answer
B. 0.5Explanation
The Rf value is calculated by dividing the distance traveled by the solute (y) by the distance traveled by the solvent front (x). In this case, the solute traveled 10cm and the solvent front traveled 5cm. Therefore, the Rf value is 10cm/5cm = 2. This means that the solute traveled twice as far as the solvent front.Rate this question:
-
- 6.
During filtration, the soild collected in the filter paper is called the_______.
- A.
Filtrate
- B.
Rubbish
- C.
Residue
- D.
Solid
Correct Answer
C. ResidueExplanation
During filtration, the solid collected in the filter paper is called the residue. This is because filtration is a process used to separate solids from liquids or gases, and the solid material that remains on the filter paper after the liquid or gas has passed through is referred to as the residue.Rate this question:
-
- 7.
________ separates a dissolved solid from a solution as well-formed crystals.
- A.
Dissolution
- B.
Filtration
- C.
Evaporation
- D.
Distillation
Correct Answer
D. DistillationExplanation
Distillation is the process of separating a dissolved solid from a solution by heating the solution to create vapor, which is then condensed and collected as a separate liquid. This method is used to separate substances based on their different boiling points. In the context of the given question, distillation is the most suitable method for separating dissolved solids from a solution as it allows for the formation of well-formed crystals.Rate this question:
-
- 8.
During distillation, what are the little particles in the water?
- A.
Solid
- B.
Boiling chips
- C.
Glass
- D.
Stone
Correct Answer
B. Boiling chipsExplanation
During distillation, boiling chips are added to the water to provide nucleation sites for the formation of bubbles. These chips are small, porous stones or glass pieces that have a high surface area, allowing for efficient boiling and vaporization of the liquid. They prevent superheating and bumping by creating a controlled release of gas bubbles, ensuring a smooth and safe distillation process.Rate this question:
-
- 9.
What are the two methods of paper chromatography?
- A.
ascending and unscending
- B.
Descending and insecending
- C.
Ascending and descending method
- D.
Done above
Correct Answer
C. Ascending and descending methodExplanation
Ascending and descending methods are the two methods of paper chromatography. In ascending paper chromatography, the solvent is placed in a container and the paper is immersed in it, allowing the solvent to travel up the paper. This method is commonly used for separating pigments. On the other hand, in descending paper chromatography, the solvent is placed at the top of the paper and allowed to flow down, separating the components of a mixture. This method is often used for analyzing amino acids and other organic compounds.Rate this question:
-
- 10.
And which one will show the result first?
- A.
Ascending
- B.
Descending
- C.
Unscending
- D.
Inscending
Correct Answer
B. DescendingExplanation
The correct answer is "Descending" because it refers to a sequence or order in which the values or numbers are arranged in decreasing order. In other words, it means that the result will be shown from the highest value to the lowest value.Rate this question:
-
- 11.
Why is the colored spot not placed below the solvent level during chromatography?
- A.
Waste time
- B.
No effect
- C.
For fun
- D.
Dye will dissolve
Correct Answer
D. Dye will dissolveExplanation
The colored spot is not placed below the solvent level during chromatography because the dye will dissolve in the solvent and move up the chromatography paper. Placing the spot below the solvent level would prevent the dye from dissolving and hinder its movement, resulting in inaccurate results.Rate this question:
-
- 12.
.If you want to use separating funnel to separate oil and water, what is the substance remain in the funnel after the experiment?
- A.
oil
- B.
Water
- C.
Oil and water
- D.
Nothing
Correct Answer
A. oilExplanation
After using a separating funnel to separate oil and water, the substance that remains in the funnel is the oil. The separating funnel is designed to separate immiscible liquids, such as oil and water, based on their different densities. Since oil is less dense than water, it will float on top and can be easily separated by draining it out of the funnel. Therefore, after the experiment, only the oil will be left in the funnel.Rate this question:
-
- 13.
Sublimation refers to change of state of a substance from _______ to _______.
- A.
solid-liquid
- B.
Solid-gas
- C.
Liquid-gas
- D.
Gas-solid
Correct Answer
B. Solid-gasExplanation
Sublimation is the process in which a substance changes directly from a solid state to a gas state, without going through the intermediate liquid state. Therefore, the correct answer is solid-gas.Rate this question:
-
- 14.
What are the methods used if you want to separate two solids of different solubility in a particular solvent?
- A.
Dissolution
- B.
Filtration
- C.
Evaporation
- D.
Crystallization
- E.
All above
Correct Answer
D. CrystallizationExplanation
Crystallization is the method used to separate two solids of different solubility in a particular solvent. In this process, the solvent is evaporated slowly, causing the solute to form crystals. The crystals can then be separated from the remaining liquid through filtration or decantation.Rate this question:
-
- 15.
To obtain a solute by crystallization method, the solubility of the solute must varies a lot with __________.
- A.
Volume
- B.
Speed
- C.
Nothing
- D.
Temperature
Correct Answer
D. TemperatureExplanation
The solubility of a solute must vary a lot with temperature in order to obtain it by the crystallization method. Crystallization involves dissolving a solute in a solvent and then allowing the solution to cool or evaporate, causing the solute to crystallize out. If the solubility of the solute does not change significantly with temperature, it would be difficult to separate the solute from the solvent through crystallization. Therefore, temperature is a crucial factor in determining whether the crystallization method can be used effectively.Rate this question:
-
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Oct 12, 2023Quiz Edited by
ProProfs Editorial Team -
Mar 26, 2010Quiz Created by
Felixpiers
Hydrogen Valency Quiz: Test Your Chemical Bonding Knowledge
Hydrogen Valency Quiz: Test Your Chemical Bonding Knowledge
How Much Do You Know About Van der Waals Forces? Quiz
How Much Do You Know About Van der Waals Forces? Quiz
Hund's Rule Demystified: Electron Configuration Challenge
Hund's Rule Demystified: Electron Configuration Challenge
- Aeronautics Quizzes
- Aerospace Quizzes
- Agricultural Science Quizzes
- Astrology Quizzes
- Astronomy Quizzes
- Atom Quizzes
- Biochemistry Quizzes
- Biology Quizzes
- Biomechanics Quizzes
- Biostatistics Quizzes
- Biotechnology Quizzes
- Botany Quizzes
- Branches Of Science Quizzes
- Cytology Quizzes
- Easy Science Quizzes
- Ecology Quizzes
- Electrical Quizzes
- Embryology Quizzes
- Endocrinology Quizzes
- Engineering Quizzes
- Environmental Science Quizzes
- Epidemiology Quizzes
- Experiment Quizzes
- Forestry Quizzes
- Fossil Quizzes
- Gas Quizzes
- General Science Quizzes
- Genetics Quizzes
- Histology Quizzes
- Human Biology Quizzes
- Integrated Science Quizzes
- Invention Quizzes
- Library Science Quizzes
- Lighting Quizzes
- Liquid Quizzes
- Marine Biology Quizzes
- Microbiology Quizzes
- Molecular Biology Quizzes
- Nature Quizzes
- Neuroscience Quizzes
- Nuclear Science Quizzes
- Oceanography Quizzes
- Physics Quizzes
- Psychology Quizzes
- Science And Technology Quizzes
- Science Glossary Quizzes
- Science Knowledge Quizzes
- Science Practice Quizzes
- Scientific Method Quizzes
- Scientific Notation Quizzes
- Soil Science Quizzes
- Solar System Quizzes
- Solid Quizzes
- Toxicology Quizzes
- Zoology Quizzes
Back to top