GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Inversely with pressure
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Directly with pressure
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Directly with density
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None of the above
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Detailed explanation-1: -The pressure of gas above a liquid affects the boiling point. In an open system this is called atmospheric pressure. The greater the pressure, the more energy required for liquids to boil, and the higher the boiling point.
Detailed explanation-2: -The increase in boiling point decreases the intermolecular spaces and increases the intermolecular attraction and hence when pressure is increased, the boiling point also increases and vice versa.
Detailed explanation-3: -The boiling point of a liquid varies according to the applied pressure; the normal boiling point is the temperature at which the vapour pressure is equal to the standard sea-level atmospheric pressure (760 mm [29.92 inches] of mercury). At sea level, water boils at 100° C (212° F).
Detailed explanation-4: -The boiling point of water is inversely proportional to the atmospheric pressure.
Detailed explanation-5: -When pressure is increased they have to overcome extra force being applied to them, so they need extra heat energy. In process of giving extra heat energy, the boiling point also increases.