When the light rays pass through the atmosphere having layers of different densities and refractive indices, then refraction of light takes place. This refraction of light by the earth's atmosphere is called atmospheric refraction.Twinkling of stars, solar and lunar halos are caused by Atmospheric Refraction.Some particles and molecules found in ... Read More

Diffusion is the movement of a substance from a high concentration area to the low concentration area.It happens in liquids and gases because their particles move randomly from place to place.Water is just an example of a liquid that can be used to show diffusion.For Example- Water moves across cell ... Read More

Given : $a=-3, b=1$ and $c=-4$. To do : We have to verify the following properties, for the given values of a, b, c. Property 1: $a\div (b+c)  ≠  (a÷b) +c$ Property 2: $a\times (b+c) =(a\times b)+(a\times c)$ Property 3: $a\times (b-c)=(a\times b) -(a\times c)$   Solution : Property 1: $a\div ... Read More

Bears survive the winter season by adding on a lot of weight before the winter. They constantly eat grasses, berries, nuts, millers, other animal species, and also the dead animals to gain the fats.They went for hibernation which helps animals to survive the changing seasons.Hibernation functions to conserve energy by slowing ... Read More

In the Paleolithic Age, people wandered from place to place hunting and gathering food items for their survival, and that's why they were known as hunter-gatherers.At that time there were no roads, farms, or villages existed. Palaeolithic people used to move around in search of food, it was their main ... Read More

Given :The given term is $(a+b)^3 + (c-b)^3 - (a+c)^3$.To do :We have to factorise the given term.Solution :$(a+b)^3 + (c-b)^3 - (a+c)^3 = (a+b)^3 + (c-b)^3 +[-(a+c)]^3$We know that, $a^3 + b^3 + c^3 -3abc = (a+b+c) (a^2 + b^2 + c^2 - ab - bc - ac)$.If $a+b+c ... Read More

Solution :

A double-replacement reaction is a reaction in which the cations and anions of two ionic compounds exchange places to form two new compounds.The general form of a double-replacement (also called double-displacement) reaction is: AB + CD → AD + BC.Eg: Pb(NO3)2 (aq) + 2KI (aq) → 2 KNO3 (aq) + ... Read More

According to the closure property, the result of the addition of two rational numbers is also a rational number.For example 1/2, 3/2 are rational number. 1/2 + 3/2 = 4/2 is also a rational number.Similarly, operations like subtraction, multiplication and division between rational numbers give a rational number as a ... Read More

It's true that pulses are rich in protein. But we cannot say it as a poultry product.Poultry products are the products such as meat, chicken, an egg that comes from any life or slaughtered domesticated bird. It is an animal source.Pulses are the legumes that come from plants by growing ... Read More