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Chemistry NCERT Exemplar Solutions Class 11th Chapter Five

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4 months ago

Chemistry NCERT Exemplar Solutions Class 11th Chapter Five Exemplar Solution

Which of the following property of water can be used to explain the spherical shape of rain droplets?

(i) Viscosity

(ii) Ssurface tension

(iii) Critical phenomena

(iv) Pressure
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New answer posted

4 months ago

Chemistry NCERT Exemplar Solutions Class 11th Chapter Five Exemplar Solution

A person living in Shimla observed that cooking food without using pressure cooker takes more time. The reason for this observation is that at high altitude:

(i) Pressure increases

(ii) Temperature decreases

(iii) Pressure decreases

(iv) Temperature increases
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P
Payal Gupta

Contributor-Level 10

This is a multiple choice answer as classified in NCERT Exemplar

Option (iii) pressure decreases 

At high altitude the pressure is low and therefore, water boils at lower temperature because the vapour pressure becomes equal to atmospheric temperature at low temperature due to which the food takes more time to be cooked without using a pressure cooker.

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