All Questions
5
questions
60
votes
2
answers
6k
views
Why does pressure in a thermos increase after shaking up hot water and soap?
Whenever I wash my thermos, I put hot water and then some soap in; then I seal the one end with my hand or use the lid. After shaking it up, if I slowly remove the lid or my hand, it expels a little ...
- 581
0
votes
2
answers
5k
views
Is it dangerous to put a pressure cooker under cold water after cooking?
After cooking using a pressure cooker, it usually takes a while for the pressure to be released and for the cooker to be opened. However when I think the food may have been slightly overcooked, I take ...
- 163
0
votes
1
answer
123
views
is boiling point of the gas cause cooling in expansion process of refrigeration?
I have a doubt about expansion process.
Some people say it's an adiabatic expansion, but other say it's something related to the nozzle.
What is the actual cause for cooling in expansion process?
...
- 191
4
votes
1
answer
1k
views
Boiling of Water
I studied in textbooks that the boiling point of water is the temperature at which the vapor pressure is equal to the atmospheric presssure. My doubt is since the vapor mixes with atmosphere, how can ...
- 63
0
votes
2
answers
1k
views
Why pressure cooker is more effective in cooking than any vessel?
Why do we prefer cooking/boiling food in pressure cooker, I know there is a reason but don't know what is it?
I can't show my work here as it is a conceptual question.
- 1,829