Electrochemistry
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Electrochemical Cells
SubtopicElectrochemical Cells under Electrochemistry for Grade 12 CBSE.
Preview questions (no answers)
- 1.
What is the function of the voltmeter in an electrochemical cell experiment?
A.To provide power
B.To measure the potential difference
C.To complete the internal circuit
D.To increase the reaction rate
- 2.
In a Daniell cell, what is the value of the standard cell potential ()?
A.1.1 V
B.2.1 V
C.0.5 V
D.1.5 V
- 3.
A Galvanic cell is also commonly known as a:
A.Voltaic cell
B.Electrolytic cell
C.Faraday cell
D.Conductivity cell
Download the worksheet for Electrochemistry - Electrochemical Cells to practice offline. It includes additional chapter-level practice questions.
Galvanic Cells and Nernst Equation
SubtopicGalvanic Cells and Nernst Equation under Electrochemistry for Grade 12 CBSE.
Preview questions (no answers)
- 1.
In a Galvanic cell (), which metal acts as the cathode?
A.Copper
B.Silver
C.Both
D.Neither
- 2.
Which physical quantity is measured by the product of , , and ?
A.Power
B.Total Charge
C.Electrical Work
D.Resistance
- 3.
What is the sign of the cathode in an electrolytic cell (not a Galvanic cell), to distinguish it from the topic at hand?
A.Positive
B.Negative
C.Neutral
D.It has no sign
Download the worksheet for Electrochemistry - Galvanic Cells and Nernst Equation to practice offline. It includes additional chapter-level practice questions.
Conductance of Electrolytic Solutions
SubtopicConductance of Electrolytic Solutions under Electrochemistry for Grade 12 CBSE.
Preview questions (no answers)
- 1.
The molar conductivity of , , and at infinite dilution are and respectively. What is for ?
A.B.C.D. - 2.
Kohlrausch's law can be used to calculate which property of a weak acid?
A.Limiting molar conductivity
B.Mass of the acid
C.Color of the solution
D.Atmospheric pressure
- 3.
The molar conductivity of a weak electrolyte is low at high concentration because:
A.The electrolyte is fully dissociated
B.The degree of dissociation is low
C.The ions move very fast
D.The solvent evaporates
Download the worksheet for Electrochemistry - Conductance of Electrolytic Solutions to practice offline. It includes additional chapter-level practice questions.
Electrolytic Cells and Electrolysis
SubtopicElectrolytic Cells and Electrolysis under Electrochemistry for Grade 12 CBSE.
Preview questions (no answers)
- 1.
Which of the following is the correct unit for current in the context of Faraday's equations?
A.Volt ()
B.Ampere ()
C.Ohm ()
D.Watt ()
- 2.
The number of electrons involved in the reduction of mole of to is:
A.B.C.D. - 3.
During the electrolysis of molten , what is produced at the anode?
A.Calcium metal
B.Chlorine gas
C.Oxygen gas
D.Hydrogen gas
Download the worksheet for Electrochemistry - Electrolytic Cells and Electrolysis to practice offline. It includes additional chapter-level practice questions.
Batteries and Fuel Cells
SubtopicBatteries and Fuel Cells under Electrochemistry for Grade 12 CBSE.
Preview questions (no answers)
- 1.
What is the function of the carbon black mixed with in a dry cell?
A.To increase the conductivity of the electrode
B.To act as the anode
C.To absorb water
D.To prevent the electrolyte from leaking
- 2.
Which of the following statements about fuel cells is FALSE?
A.They are a type of galvanic cell
B.They can run indefinitely as long as reactants are supplied
C.They have low efficiency compared to steam turbines
D.They are used in space vehicles
- 3.
The carbon rod in a LeclanchΓ© cell is surrounded by a mixture of:
A.and
B.and carbon black
C.and
D.and
Download the worksheet for Electrochemistry - Batteries and Fuel Cells to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Corrosion is a spontaneous process. This means that for the corrosion reaction:
A.is positive
B.is negative
C.is zero
D.is negative
- 2.
Boiled distilled water covered with a layer of oil prevents rusting because:
A.Oil reacts with iron to form a protector
B.Boiling removes dissolved oxygen and oil prevents its re-entry
C.Distilled water is too acidic
D.The oil acts as a catalyst
- 3.
What happens to the electrons released by iron atoms at the anodic site during rusting?
A.They are lost to the atmosphere
B.They flow through the metal to the cathodic site
C.They are absorbed by the iron nucleus
D.They convert back to
Download the worksheet for Electrochemistry - Corrosion to practice offline. It includes additional chapter-level practice questions.