A storm is predicted when the pressure of the atmosphere suddenly decreases. A rapid drop in atmospheric pressure often indicates the approach of a storm system. This decrease in pressure is associated with unstable weather conditions, including strong winds, precipitation, ...
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The egg floats in concentrated salt solution because the density of the salt solution is greater than the density of the egg. The increased density of the salt solution provides greater buoyant force, causing the egg to float. In soft ...
Milk becomes sour due to bacteria. When bacteria such as Lactobacillus ferment the lactose in milk, they produce lactic acid. This acid causes the milk to curdle and become sour. Bacterial action is a natural process in the souring of ...
Lactobacillus is the microorganism used in making curd. It ferments lactose, the sugar in milk, to produce lactic acid, which curdles the milk and gives curd its characteristic texture and tangy taste. This process is known as lactic acid fermentation.
Refrigeration helps in food preservation by reducing the rate of biochemical reactions. It slows down the growth of bacteria and other microorganisms, thereby extending the shelf life of food and maintaining its quality.