Chemistry - Ideal Gas Question with Solution | TestHub
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Passage / Comprehension
A pumped-up cycle tire has a volume of about 2 litres and when properly inflated is at a total pressure of about 6 bar. A typical hand pump has a piston cross-section area of 5 cm² and a stroke length of 40 cm. The atmospheric pressure is 1 bar. (g = 10 ms⁻²)
How many strokes of the hand pump, assuming no leakage or heating effects, would be needed to inflate the tire?
Options:
Answer:
B
Solution:
Air in the tire at 6 bar in 2 L equals 6 × 2 = 12 L at atmospheric pressure. Each stroke delivers 5 × 40 = 200 cm³ = 0.2 L at 1 bar. Strokes = 12/0.2 = 60. Hence (b).
Stream:JEESubject:ChemistryTopic:Ideal GasSubtopic:Problems related with container/piston/SPM
⏱ 2mℹ️ Source: QB
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