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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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(179)
Subject: Chemistry
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Veronal is what type of drug
- Mass of one atom of X is 2.66 x 10⁻²³ g, then its 32 g is equal to
- The heat of neutralization of a strong base and a strong acid is 57 kJ.
- By what factor does the average velocity of a gaseous molecule increase
- The coordination number and oxidation number of X in the following compound [X(SO₄)(NH₃)₅]Cl
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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