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Which of the following oxides is used in lead storage battery
Options
(a) PbO
(b) PbO₂
(c) Pb₂O₃
(d) Pb₃O₄
Correct Answer:
PbO₂
Explanation:
Lead storage battery consists of a group of lead plates bearing compressed spongy lead, alternating with a group of lead plated bearing lead dioxide, PbO₂. These plates are immersed in a solution of about 30% H₂SO₄. Overall cell reaction is
Pb + PbO₂ + 4H⁺ +2SO₄²⁻ → 2PbSO₄ + 2H₂O
E (Cell) is 2.041 Volt.
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Topics: Electrochemistry and Chemical Kinetics
(87)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If a given sample of water contains 0.06 g of Ca²⁺ ion per kg, calculate
- In Lassaigne’s test red colour precipitate is obtained which is due to formation
- Reaction BaO₂(s) ⇌ BaO(s) + O₂(g) ; ΔH = +ve.In equilibrium condition,
- Excess of Na⁺ ions in air system causes
- Identify the alloy containing a non – metal as a constituent in it
Topics: Electrochemistry and Chemical Kinetics (87)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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