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In a closed insulated container a liquid is stirred with a paddle to increase the temperature which of the following is true
Options
(a) ΔE = w ≠ 0, q = 0
(b) ΔE = w = q ≠ 0
(c) ΔE = 0, w = q ≠ 0
(d) w = 0, ΔE = q ≠ 0
Correct Answer:
ΔE = w ≠ 0, q = 0
Explanation:
The mathematical form of first law of thermodynamics : q = ΔE + W, Since the system is closed and insulated, q = 0, Paddle work is done on system. Therefore W ≠ 0. Temperature and hence internal energy of the system increases. Therefore ΔE ≠ 0.
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Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The solubility product of a sparingly soluble salt AB at room temperature
- Which of the following reaction(s) can be used for the preparation of alkyl halides?
- The compound that does not produce blue colour in Lassaigne’s test is
- At 0K, (i) ¹²C and (ii) a mixture of ¹²C and ¹⁴C will
- One mole of an ideal gas at 300 K is expanded isothermally
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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