Amazing facts of 2020

1. Why milk taste similiar as sweet and curd is sour? 

Milk is made of water, fats, proteins, lactose and minerals. Lactose is a type of sugar like sucrose. It gives milk a sweet taste.
Lactose free milk is made for people who are allergic to lactose by breaking it down with the enzyme lactase. But Curd is formed when Lactobacillus bacteria reproduce. If the milk is not transferred to a cool place, then milk turns sour and turn into curd because the bacteria continue to multiply and produce more lactic acid inside the milk. This lactic acid makes curd sour in taste.

2. Why soft drink bottle are not flat bottomed?

 Soft drink and soda bottles, especially those made of plastic are not flat bottomed. The foot of the bottles usually has 5 bumps (corrugation). The bottles are not designed so to give it a fancy look. You will not find these bumps in water bottles or juice bottles. Water bottles have small indents to improve the stability of the bottle. The bumps or the corrugations in the foot of the bottle increases the strength of the bottle. Soft drinks are served chilled. When a liquid is cooled, its volume changes and the bottle must not buckle because of this change in volume. The corner or the tip of the bump can slightly expand/contract without breaking which takes care of the change in volume of the liquid.

3. Why sky is blue?

often asks about the natural world is “why is the sky blue?” Yet despite how widespread this question is, there are many misconceptions and incorrect answers bandied about — because it reflects the ocean; because oxygen is a blue-colored gas; because sunlight has a blue tint — while the right answer is often thoroughly overlooked. In truth, the reason the sky is blue is because of three simple factors put together: that sunlight is made out of light of many different wavelengths, that Earth’s atmosphere is made out of molecules that scatter different-wavelength light by different amounts, and the sensitivity of our eyes. Put these three things together, and a blue sky is inevitable.

4. Why banana are curved in space?

Bananas go through a process that's scientifically called "negative geotropism." What that means, in layman's terms, is that as bananas grow, they become too heavy for the plant, and start sinking towards the ground. So the curve in the banana is due to the fruit's dogged pursuit of the rays of sun. Yes, the banana is actually curling up against its own weight, much like you would do in a Pilates class, in an effort to get more sunlight.The reasoning for this actually has to do with where the bananas originated: the rainforest, where there is notoriously little sunlight. So, the banana adapted, evolved, and survived. "If the fruit were to grow towards the small amount of light that penetrates sideways through the vegetation, the plant could overbalance and topple over. So bananas developed a way of growing towards the light without destabilising the plant.

5. Why hot water freeze fast than hot water?

Hot water freezes faster than cold, known as the Mpemba effect. ... Evaporation is the strongest candidate to explain the Mpemba effect. As hot water placed in an open container begins to cool, the overall mass decreases as some of the water evaporates. With less water to freeze, the process can take less time and in other words it has been proposed for the Mpemba effect: that evaporation from warm water carries heat away more effectively, or unusual flows within the fluid, or even supercooling, in which the water’s temperature falls well below zero before it turns to ice.