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प्रश्न
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:
पर्याय
Pressure increases
Temperature decreases
Pressure decreases
Temperature increases
उत्तर
Pressure decreases
Explanation:
At high altitudes, pressure is low. Hence, boiling takes place at lower temperature and therefore, cooking takes more time. In pressure cooker, pressure is high and hence boiling point increases.
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संबंधित प्रश्न
Physical properties of ice, water and steam are very different. What is the chemical composition of water in all the three states.
The behaviour of matter in different states is governed by various physical laws. According to you what are the factors that determine the state of matter?
Assertion (A): Three states of matter are the result of balance between intermolecular forces and thermal energy of the molecules
Reason (R): Intermolecular forces tend to keep the molecules together but thermal energy of molecules tends to keep them apart.
Assertion (A): Liquids tend to have maximum number of molecules at their surface.
Reason (R): Small liquid drops have spherical shape.
