The graph below shows the change in
temperature of a beaker of water as it is
subjected to various treatments.
What could have taken place at point Q?
(A) The beaker of water was kept on
burner with full flame.
(B) Ice cubes were added to the beaker
of water.
-Т
100
Temperature(°C)
(C) Some water was poured out of the
beaker.
(D) All of these
R
P
Time(mins)
Answers
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Answer: Correct option is B
Ice cubes were added to the beaker of water.
At point Q, there occurs a gradual decrease in temperature of water, which could have been possible due to addition of ice cubes into the beaker of water.
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