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Subject :NSO    Class : Class 4

Refer to the given set-up. Beakers X and Y contain equal amounts of water at different temperatures. The water in both the beakers was then poured into the trough. Which of the following is most likely to be the temperature of water in trough after an hour?


A80°C
B90°C
C130°C
D< 80°C


Ans 1:

Class : Class 6

Ans 2: (Master Answer)

Class : Class 1

D

When the water of beakers X and Y will be mixed, the final temperature will be somewhere between 50°C-80°C. So the temperature will be < 80°C after an hour.


Ans 3:

Class : Class 6
babuski

Ans 4:

Class : Class 7
(Master Answer)The correct answer is D.

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