Electrolysis Quiz For Class 10
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In electrolysis, only _____________ ions present can be discharged.
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1 out of 4
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2 out of 4
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3 out of 4
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4 out of 4
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How much do you know about electrolysis? Check out our wonderful electrolysis quiz, created especially for class 10th students? In the scientific study of chemistry, the process of electrolysis involves using a direct electric current to prompt a chemical reaction that otherwise would be non-spontaneous. Do you think you can answer all of the questions regarding electrolysis correctly in this See morequiz? Find out now with this quiz! Best of luck to you with this.
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- 2.
What are the ions present in water?
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H and OH
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H+ and OH-
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H2 and O
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H2O
Correct Answer
A. H+ and OH-Explanation
Water is a polar molecule, meaning it has a slightly positive end (hydrogen) and a slightly negative end (oxygen). This polarity allows water to dissociate into ions. H+ ions are formed when the hydrogen atom loses its electron, while OH- ions are formed when the oxygen atom gains an electron. Therefore, the correct answer is H+ and OH-.Rate this question:
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- 3.
If the anions in an aqueous solution are _________ ions, they will be ________.
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Not halide, discharged
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Halide, discharged
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Sulfate, discharged
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Copper, discharged
Correct Answer
A. Halide, dischargedExplanation
If the anions in an aqueous solution are halide ions, they will be discharged. This means that during electrolysis, halide ions will be attracted to the positive electrode (anode) and undergo a chemical reaction, resulting in the production of a halogen gas. This discharge occurs because halide ions have a higher tendency to lose electrons compared to other anions present in the solution.Rate this question:
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- 4.
Which pair of electrolytes is not inert?
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Mercury and Carbon
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Mercury and Silver
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Silver and Carbon
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Copper and Silver
Correct Answer
A. Copper and SilverExplanation
Copper and silver are not inert electrolytes because they can undergo chemical reactions in an electrolytic cell. When an electric current is passed through a solution containing copper and silver ions, copper ions will be reduced at the cathode, while silver ions will be oxidized at the anode. This results in the deposition of copper metal at the cathode and the dissolution of silver metal at the anode. In contrast, mercury, carbon, and silver are inert electrolytes and do not undergo such reactions.Rate this question:
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- 5.
Which metal is used in electroplating cans to store food?
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Silver
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Chromium
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Tin
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Nickel
Correct Answer
A. TinExplanation
Tin is used in electroplating cans to store food because it is a non-toxic metal that is resistant to corrosion. It forms a protective layer on the surface of the can, preventing the food from coming into contact with the metal and altering its taste or quality. Tin also has good conductivity, making it suitable for the electroplating process.Rate this question:
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- 6.
In the electrolysis of molten sodium chloride, what is the yellow green gas formed?
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Oxygen
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Chloride
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Chlorine
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Hydrogen
Correct Answer
A. ChlorineExplanation
During the electrolysis of molten sodium chloride, chlorine gas is formed at the positive electrode (anode). This is because chloride ions (Cl-) are attracted to the positive electrode and undergo oxidation, releasing chlorine gas (Cl2). Therefore, the correct answer is chlorine.Rate this question:
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- 7.
______ are _________ at the anode and _______ at the cathode.
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Metals, oxidized, reduced
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Atoms, reduced, oxidized
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Ions, oxidized, reduced
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Ions, reduced, oxidized
Correct Answer
A. Ions, oxidized, reducedExplanation
In electrochemical reactions, ions are typically oxidized at the anode and reduced at the cathode. Oxidation is the loss of electrons, which occurs at the anode, while reduction is the gain of electrons, which occurs at the cathode. This fundamental principle applies to various types of cells, including electrolytic cells and galvanic cells.Rate this question:
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- 8.
A cathode is ____________ charged
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Positively
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Negatively
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Neutrally
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None
Correct Answer
A. NegativelyExplanation
A cathode is negatively charged because it is the electrode where reduction occurs during an electrochemical reaction. Reduction involves gaining electrons, which results in a negative charge on the cathode.Rate this question:
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- 9.
An anode is __________ charged.
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Positively
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Negatively
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Neutrally
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None
Correct Answer
A. PositivelyExplanation
An anode is positively charged because it is the electrode where oxidation occurs during an electrochemical reaction. Oxidation involves the loss of electrons, which results in a positive charge on the anode.Rate this question:
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- 10.
Which of these is not an application of electrolysis?
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Rust removal
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Electroplating
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Making leather
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Manufacture of bleach
Correct Answer
A. Making leatherExplanation
Electrolysis is a process that involves the use of an electric current to drive a non-spontaneous chemical reaction. It is commonly used in rust removal, electroplating, and the manufacture of bleach. However, making leather does not require the use of electrolysis. Leather production involves various processes such as tanning, dyeing, and finishing, but none of these processes involve the use of an electric current to drive a chemical reaction. Therefore, making leather is not an application of electrolysis.Rate this question:
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Aug 10, 2024Quiz Edited by
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Jan 30, 2010Quiz Created by
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