MCQ on Cells and Batteries for SSC JE Electrical

Q1: What is the primary function of a cell or battery?

A. Store electrical energy
B. Convert chemical energy into electrical energy
C. Store mechanical energy
D. Convert thermal energy into electrical energy
Answer: B. Convert chemical energy into electrical energy

Q2: What does the EMF of a cell depend upon?

A. Temperature and pressure
B. Electrode material and electrolyte type
C. Electrode size only
D. Electrolyte temperature only
Answer: B. Electrode material and electrolyte type

Q3: Which of the following is a characteristic of a primary cell?

A. Can be recharged
B. Reversible chemical reaction
C. Non-rechargeable
D. Used in heavy machinery
Answer: C. Non-rechargeable

Q4: What is the EMF of a Leclanché cell?

A. 1.2 V
B. 1.5 V
C. 2.2 V
D. 1.43 V
Answer: B. 1.5 V

Q5: Which of the following is an example of a secondary cell?

A. Leclanché cell
B. Clark cell
C. Nickel-iron cell
D. Weston cell
Answer: C. Nickel-iron cell

Q6: What is the electrolyte used in a lead-acid battery?

A. Potassium hydroxide (KOH)
B. Ammonium chloride
C. Dilute sulfuric acid (H2SO4)
D. Zinc sulfate
Answer: C. Dilute sulfuric acid (H2SO4)

Q7: Which material is used as the positive electrode in a lead-acid cell?

A. Zinc
B. Nickel hydroxide
C. Lead peroxide (PbO2)
D. Cadmium
Answer: C. Lead peroxide (PbO2)

Q8: What is the average EMF of a fully charged lead-acid battery?

A. 1.2 V
B. 2.0 V
C. 2.2 V
D. 3.0 V
Answer: C. 2.2 V

Q9: Which cell has the longest life span?

A. Leclanché cell
B. Lead-acid cell
C. Nickel-iron (Edison) cell
D. Weston cell
Answer: C. Nickel-iron (Edison) cell

Q10: What is the ampere-hour efficiency of a lead-acid cell?

A. 50%
B. 75%
C. 90%
D. 100%
Answer: C. 90%

Q11: Why are alkaline cells preferred over lead-acid cells in certain applications?

A. Lower cost
B. Shorter life span
C. Resistance to temperature variations
D. Higher EMF
Answer: C. Resistance to temperature variations

Q12: Which of the following is not a component of a lead-acid battery?

A. Lead peroxide
B. Spongy lead
C. Potassium hydroxide
D. Sulfuric acid
Answer: C. Potassium hydroxide

Q13: What is the internal resistance of a lead-acid cell?

A. 0.01 W
B. 1.0 W
C. 0.1 W
D. 10.0 W
Answer: A. 0.01 W

Q14: Which of the following is used as the electrolyte in a nickel-iron (Edison) cell?

A. Ammonium chloride
B. Zinc sulfate
C. Potassium hydroxide
D. Sulfuric acid
Answer: C. Potassium hydroxide

Q15: What is the EMF of a nickel-cadmium cell?

A. 2.0 V
B. 1.2 V
C. 1.5 V
D. 1.36 V
Answer: B. 1.2 V

Must Read: Complete Article on Cell & Battery