SATHEE: Properties Of Solids And Liquids Question 112

Properties Of Solids And Liquids Question 112

Question: The temperature of equal masses of three different liquids A, B and C are 12ºC, 19ºC and 28ºC respectively. The temperature when A and B are mixed is 16ºC and when B and C are mixed is 23ºC. The temperature when A and C are mixed is [Kerala PET 2005]

Options:

A) 18.2ºC

B) 22ºC

C) 20.2ºC

D) 25.2ºC

Show Answer

Answer:

Correct Answer: C

Solution:

Heat gain = heat lost CA(16 -12) = CB (19 - 16)

therefore $\frac{C_{A}}{C_{B}}$ = $\frac{3}{4}$ and CB(23 - 19) = CC (28 - 23)

therefore $\frac{C_{B}}{C_{C}}$ = $\frac{5}{4}$

therefore $\frac{C_{A}}{C_{C}} = \frac{15}{16}$ …(i) If q is the temperature when A and C are mixed then, $C_{A} (θ - 12)$ = $C_{C} (28 - θ)$

therefore $\frac{C_{A}}{C_{C}}$

$= \frac{28 - θ}{θ - 12}$ …(ii) On solving equation (i) and (ii) q = 20.2ºC.

पिछला

अगला

Properties Of Solids And Liquids Question 112

Question: The temperature of equal masses of three different liquids A, B and C are 12ºC, 19ºC and 28ºC respectively. The temperature when A and B are mixed is 16ºC and when B and C are mixed is 23ºC. The temperature when A and C are mixed is [Kerala PET 2005]

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Properties Of Solids And Liquids Question 112

Question: The temperature of equal masses of three different liquids A, B and C are 12ºC, 19ºC and 28ºC respectively. The temperature when A and B are mixed is 16ºC and when B and C are mixed is 23ºC. The temperature when A and C are mixed is [Kerala PET 2005]

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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