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Question
Physics
It is difficult to cook rice in an open vessel by boiling it at high altitudes because of
Q. It is difficult to cook rice in an open vessel by boiling it at high altitudes because of
2976
205
WBJEE
WBJEE 2009
Thermal Properties of Matter
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A
low boiling point and high pressure
18%
B
high boiling point and low pressure
42%
C
low boiling point and low pressure
24%
D
high boiling point and high pressure
15%
Solution:
At high altitude pressure is low and therefore boiling point is also low. In this case water starts boiling below its boiling point but rice cooks at
10
0
∘
C
. So, it is difficult to cook rice at high altitudes.