| The graph below shows the temperature of a beaker of water as it is subjected to various treatments. |
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| 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.
C) A small amount of salt was added to the beaker of water.
D) Some water was poured out of the beaker.
Correct Answer: B
Solution :
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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