Question

Q.32 Four students boiled same quantity of water in similar test tubes. They placed their test
tubes in different zones of the flame as mentioned below:
Student A
Outermost zone
Student B
Middle zone
Student C
Innermost zone
Student D
Between middle and innermost zone
Whose water will boil first?
1. Student A
2. Student B
3. Student
4. Student D

Answer 1

Answer:

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Explanation:

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Answer 2

1. Student A's water will boil first.

• For the water to boil first, the test tube should be placed in the hottest zone.
• Out of the four zones mentioned here, the outermost zone is the hottest zone. As complete combustion occurs in this region, it burns with a blue flame. The test tube placed in this zone will become hottest quickly and water will boil first in this test tube, i.e., the test tube of student A.
• On the contrary, the test tube of student C will take the most time to become hot and its water will boil at the last. The innermost zone is the least hot, as it receives the least oxygen.