An electrolyte Which completely dissociates into ions is:
- AAlcohol
- BCarbonic acid
- CSucrose
- ✓Sodium hydroxide
Answer: D.
View full solution →Question types
Electrolysis question types
144 questions across 7 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.
144
Questions
7
Question groups
5
Question types
01
MCQ
37 Q→02[2 Mark Question Answer]
13 Q→03[3 Mark Question Answer]
8 Q→04[1 Mark Question Answer]
52 Q→05Fill in the blanks.
29 Q→06[5 Mark Question Answer]
3 Q→07Match The Following.
2 Q→Sample Questions
Electrolysis questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Electrolysis of acidulated water is an example of ......
- AReduction
- Boxidation
- ✓redox reaction
- Dsynthesis
Answer: C.
View full solution →Assertion: In electrolysis of aqueous NaCl the product obtained is not $H _2$ gas.
Reason: Generally, gases are liberated faster than the metals.
Reason: Generally, gases are liberated faster than the metals.
- AAssertion and Reason both are correct statements and reason is the correct explanation of the assertion.
- BAssertion and Reason both are correct statements, but reason is not the correct explanation of the assertion.
- CAssertion is true, but reason is false.
- DAssertion is false, but reason is true.
Assertion: In cell current stops flowing when $E _{\text {cell }}=0$.
Reason: Equilibrium of the cell reaction is attained.
Reason: Equilibrium of the cell reaction is attained.
- AAssertion and Reason both are correct statements and reason is the correct explanation of the assertion.
- BAssertion and Reason both are correct statements, but reason is not the correct explanation of the assertion.
- CAssertion is true, but reason is false.
- DAssertion is false, but reason is true.
During electrolysis, where do cations migrate?
- ATowards the anode
- BTowards the cathode
- CAway from both electrodes
- DRemain stationary in the solution
Copper sulphate solution is electrolysed using a platinum anode. Study the diagram given alongside and answer the following questions:
- Give the names of the electrodes A and B.
- Which electrode is the oxidising electrode?
What is the difference between:
Electrolytic dissociation and thermal dissociation.
Electrolytic dissociation and thermal dissociation.
Why cannot we store $AgNO_3$ solution in copper vessel?
View full solution →What is the difference between:
electrolytic dissociation and ionization.
electrolytic dissociation and ionization.
What is the difference between:
Modern explanation and Arrhenius explanation for the theory of electrolysis:
Modern explanation and Arrhenius explanation for the theory of electrolysis:
Choose A, B, C or D to match the descriptions (i) to (v) below. Some letters may be repeated.
A. non-electrolyte
B. strong electrolyte
C. weak electrolyte
D. metallic conductor
i. Molten ionic compound
ii. Carbon tetrachloride
iii. An aluminum wire
iv. A solution containing solvent molecules, solute molecules, and ions formed by the dissociation of solute molecules.
v. A sugar solution with sugar molecules and water molecules.
A. non-electrolyte
B. strong electrolyte
C. weak electrolyte
D. metallic conductor
i. Molten ionic compound
ii. Carbon tetrachloride
iii. An aluminum wire
iv. A solution containing solvent molecules, solute molecules, and ions formed by the dissociation of solute molecules.
v. A sugar solution with sugar molecules and water molecules.
Classify the following substance under three headings:
(a) strong electrolytes (b) Weak electrolytes (c) Non-electrolytes.
Acetic acid, ammonium chloride, ammonium hydroxide, carbon tetrachloride, dilute hydrochloric acid, sodium acetate, dilute sulphuric acid.
(a) strong electrolytes (b) Weak electrolytes (c) Non-electrolytes.
Acetic acid, ammonium chloride, ammonium hydroxide, carbon tetrachloride, dilute hydrochloric acid, sodium acetate, dilute sulphuric acid.
A solution of caustic soda (NaOH) in water or when fused, conducts an electric current. What is the similarity in these two cases?
Electrolysis is a redox process. Explain.
What is the difference between:
A cation and an anion
A cation and an anion
When a molten ionic compound is electrolysed, the metal is always formed at …………… and the non-metal is formed at …………..
To carry out the so-called “electrolysis of water”. Sulphuric acid is added to water. How does the addition of sulpuric acid produce a conducting solution?
Explain why:
Solid sodium chloride does not allow electricity to pass through.
Solid sodium chloride does not allow electricity to pass through.
Explain why:
Cu, though a good conductor of electricity, is a non-electrolyte.
Cu, though a good conductor of electricity, is a non-electrolyte.
Name a non-metallic element which is a conductor of electricity.
Fill in the blanks :
Electrolysis is the passage of……………. (electricity/electrons) through a liquid or a solution accompanied by a ………….. (physical/chemical) change.
Electrolysis is the passage of……………. (electricity/electrons) through a liquid or a solution accompanied by a ………….. (physical/chemical) change.
Fill in the blank :
We can expect that pure water _________ normally conducts electricity.( Will,Will not)
We can expect that pure water _________ normally conducts electricity.( Will,Will not)
Fill in the blank :
Pure water consists entirely of …………..(ions,molecules)
Pure water consists entirely of …………..(ions,molecules)
Fill in the blanks :
A solution of HCl gas in water conducts electricity because ………......., but a solution of HCl gas in toluene does not conduct an electric current because ……….......
A solution of HCl gas in water conducts electricity because ………......., but a solution of HCl gas in toluene does not conduct an electric current because ……….......
Fill in the blanks :
The electron releasing tendency of zinc is ………....... than that of copper.
The electron releasing tendency of zinc is ………....... than that of copper.
During electrolysis of an aqueous solution of sulphuric acid between platinum electrodes, two types of anions migrate towards the anode but only one of themis discharged:
(a) Name the two anions,
(b) Name the main product of the discharge of anion at the anode and write the anode reaction,
(c) Name the product at the cathode and write the reaction.
(d) How you notice any change in colour. State why?
(e) Why this electrolysis, is considered as an example of catalysis?
(a) Name the two anions,
(b) Name the main product of the discharge of anion at the anode and write the anode reaction,
(c) Name the product at the cathode and write the reaction.
(d) How you notice any change in colour. State why?
(e) Why this electrolysis, is considered as an example of catalysis?
What is the difference between :
Strong electrolyte and weak electrolyte
Strong electrolyte and weak electrolyte
(a) Copy and complete the following table which refers to two practical applications of electrolysis
(b) Write the equation taking place at the anode for Q. 2(a).
| Anode | Electrolyte | Cathode | |
| Silver plating of a spoon | A solution of potassium argentocyanide | ||
| Purification of copper | |||
| (iii) Extraction of sodium |
Given below in column A is a schematic diagram of the electrolysis of copper sulphate. Identify the parts labelled as A, B and C with the correct options from the column B.
| Column A | Column B |
 | 1. Cathode |
| 2. Graphite | |
| 3. Anode | |
| 4. Copper sulphate solution |
Given below in column $A$ is a schematic diagram of the electrolysis of copper(II) chloride. Identify the parts labelled as A, B and C with the correct options from the column B.
View full solution →| Column A | Column B |
 | 1. Copper |
| 2. Graphite | |
| 3. Aluminium. | |
| 4. Electrolytic mixture |
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