In a refrigerator, by which is cooling is produced?

In a refrigerator, by which is cooling is produced?
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Answer :

– By the evaporation of a volatile liquid
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The cooling by a desert Cooler is based on: (1) Hot air replacement (2) Air dehydration (3) Evaporative Cooling (4) Air Rehydration

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Super cooling stands for cooling of a liquid : (1) at freezing point (2) below freezing point (3) at melting point (4) above melting point

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The first law of thermodynamics is simply the case of (1) Charle’s law (2) Newton’s law of cooling (3) The law of heat exchange (4) The law of conservation of energy

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Last Answer : The law of conservation of energy

Mud houses are cooler in summers and warmer in winters as compared to brick houses because (1) mud is a good conductor (2) mud is a bad conductor (3) mud is a poor insulator (4) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters

Description : Mud houses are cooler in summers and warmer in winters as compared to brick houses because (1) mud is a good conductor (2) mud is a bad conductor (3) mud is a poor insulator (4) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters

Last Answer : mud is a bad conductor

A circular plate, a cube and a sphere, all made up of same material and having the same mass, are heated to 300°C and left in a room. Which of them will have the slowest rate of cooling? (1) Circular plate (2) Cube (3) Sphere (4) All will cool at the same rate

Description : A circular plate, a cube and a sphere, all made up of same material and having the same mass, are heated to 300°C and left in a room. Which of them will have the slowest rate of cooling? (1) Circular plate (2) Cube (3) Sphere (4) All will cool at the same rate

Last Answer : Sphere