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For spontaneous cooling of a hot metal rod (system) in air
Options
(a) ΔSsystem > 0,ΔSunivers < 0
(b) ΔSsystem > 0,ΔSunivers < 0
(c) ΔSsystem < 0,ΔSunivers > 0
(d) ΔSsystem < 0,ΔSunivers < 0
Correct Answer:
ΔSsystem < 0,ΔSunivers > 0
Explanation:
If heat flows from system at temperature T(system) to the surrounding at temperature T(surr) then ΔS(sys) < 0 , ΔS(surr > 0.
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Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In Lassaigne’s test red colour precipitate is obtained which is due to formation
- Acidity of diprotic acids in aqueous solutions increases in the order
- Lucas test is used for the determination of
- What is the pH of 0.01 M glycine solution? For glycine, Ka₁ = 4.5 ˣ 10⁻³
- Standard reduction potential for Al³⁺/Al , Fe²/Fe, Br/Br are ₋1.66V, ₋0.45V, 1.09V
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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