Question: An Astronaut took water at 20°C and poured it into a beaker on the Moon. Tell me what will be the condition of the water. Answer: The moon has no atmosphere. So the air pressure is also zero there. The boiling point of liquids on the moon is greatly reduced because the air pressure […]
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Is it possible to boil water in the room without applying heat? Can water be boiled without heating? Yes, It is possible to boil water in the room without applying heat. An air-extraction pump was added to the container by placing some water at the top of the chamber. Now, if the air in the
Q. What happens if a hole is made in a block of ice at 0°C and filled with water at an initial temperature of 10°C? Answer: If you cut a hole in a block of ice at 0°C and put water at 10°C in the hole, the temperature of the water will gradually decrease to
Question: Can a beaker full of water be placed on a table and steam run through the water in the beaker to boil the water at atmospheric pressure? Answer: The temperature of steam at normal atmospheric pressure is 100°C. If that steam is run in the beaker, the water will be heated by absorbing the
Question: 100°C boiling water and 100°C steam: Which will burn your hands more? Answer: If 1 g of steam at 100°C releases 537 calories of heat, 1 g of water at 100°C is formed. So, steam at 100°C contains more heat than boiling water at 100°C. So if you put your hands in the steam,
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The phenomenon of the liquid gradually turning into vapour only from the surface at any temperature is called the evaporation of liquid. The following are some important factors affecting the rate of evaporation. Factors Affecting the Rate of Evaporation (i) Surface area of the liquid: The greater the surface area of the liquid, the faster
The ability to do work is called energy. Most activities in modern life require energy. Following is a detailed discussion of the Law of Conservation of Energy. Law of Conservation of Energy Energy is indestructible, energy cannot be recreated or destroyed. Only energy can be converted from one form to another. The total amount of
Sun is the source of all our energy. The amount of solar energy is huge. But only a very insignificant part of solar energy is received by us on earth. Sun is the main source of energy on Earth. All the energy on Earth comes directly and indirectly from the Sun. The Sun is the
