Fuel cell, using hydrogen and oxygen as fuels,
A. has been used in spaceship
B. has as efficiency of to produce electricity
C. uses aluminium as catalysts
D. is eco-friendly
E. is actually a type of Galvanic cell only
A. has been used in spaceship
B. has as efficiency of to produce electricity
C. uses aluminium as catalysts
D. is eco-friendly
E. is actually a type of Galvanic cell only
- (A)A,B,C only
- (B)A,B,D only
- (C)A,B,D,E only
- (D)A,D,E only✓ Correct
Answer: (D)
Solution
A. Correct — – fuel cells have been used to supply power in spacecraft.
B. Incorrect — fuel cells have much higher energy-conversion efficiency than ~40% (typically 60–70%).
C. Incorrect — the electrode catalyst used is platinum (or platinum-based), not aluminium.
D. Correct — the only by-product is water, so the cell is eco-friendly.
E. Correct — a fuel cell is a type of galvanic (voltaic) cell, generating electricity from a spontaneous redox reaction.
Correct: A, D, E only.
B. Incorrect — fuel cells have much higher energy-conversion efficiency than ~40% (typically 60–70%).
C. Incorrect — the electrode catalyst used is platinum (or platinum-based), not aluminium.
D. Correct — the only by-product is water, so the cell is eco-friendly.
E. Correct — a fuel cell is a type of galvanic (voltaic) cell, generating electricity from a spontaneous redox reaction.
Correct: A, D, E only.
JEE Main · 2024 · 04 Apr 2024 · Shift 2 · Single correct option