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Discussion Forum : Physics - Section 1 (Q.No. 34)
Physics
34.
It takes much longer to cook food in the hills than in the plains, because
in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100oC causing an increase in cooking time
due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100oC and therefore water takes longer to boil
in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere
in the hills the humidity is high and therefore a lot of heat is absorbed by the atmosphere leaving very little heat for cooking
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
19 comments Page 1 of 2.
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.
Anomie said:   7 years ago
Here Pv = nRT.
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)
J Biswal said:   8 years ago
Great job. Thanks.
Shyonath meena said:   8 years ago
Thanks for this.
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. :)
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