SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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table salt
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water
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hydrogen
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gold
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Detailed explanation-1: -The substance described in question is water and its state at room temperature is liquid.
Detailed explanation-2: -Water has a melting point at 0C and a boiling point at 100C.
Detailed explanation-3: -As the atmospheric pressure is low at higher altitudes is compared to that sea level which causes decrease in boiling point as pressure is inversely proportional the temperature. So, water does boil below 100∘C at higher altitude. Was this answer helpful?
Detailed explanation-4: -Pure water has a melting point of 0°C, which allows one to test any other sample of water to check its purity. Melting point is the temperature that a solid will change phase into a liquid.
Detailed explanation-5: -The normal boiling point of water is 100oC because this is the temperature at which the vapor pressure of water is 760 mmHg, or 1 atm.