General Knowledge - Physics - Discussion
Discussion Forum : Physics - Section 1 (Q.No. 34)
34.
It takes much longer to cook food in the hills than in the plains, because
Discussion:
19 comments Page 1 of 2.
John KM said:
7 years ago
If water boils at a temp less than 100°C, why is there an increase in cooking time??
(2)
Sumit kumar said:
1 decade ago
Since p = p(atom)-qgh, hence pressure decreases while moving in upward direction.
At the hill as p is less, the water in the pressure cooker starts boiling at a lower temperature then 100 degree celsius hence rice doesn't get sufficient amount of heat for cooking purpose.
Hence option A is correct.
At the hill as p is less, the water in the pressure cooker starts boiling at a lower temperature then 100 degree celsius hence rice doesn't get sufficient amount of heat for cooking purpose.
Hence option A is correct.
(1)
Ravigowda said:
9 years ago
The answer is B because when we will be in high place pressure. Will be less therefore the water takes high heat to boil means more than 100°.
(1)
Joel said:
9 years ago
Thanks, @Rob Stark.
It helps me a lot. :)
It helps me a lot. :)
Sumiya said:
2 months ago
Option A is correct because at high altitude, pressure is low, and this low pressure causes water to boil at a low temperature, less than 100 Celsius. So, it will take longer time
Mrs Mpala said:
4 years ago
I think it's option B.
Raghu said:
5 years ago
Good explanation. Thanks, @Rob Stark.
ABi said:
5 years ago
Very correct @M. Sahu.
Because temperature and pressure are indirectly proportional.
Thus in hills, less temperature would mean high pressure.
Because temperature and pressure are indirectly proportional.
Thus in hills, less temperature would mean high pressure.
Anomie said:
7 years ago
Here Pv = nRT.
J Biswal said:
8 years ago
Great job. Thanks.
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