🤔 How it works …….. ⁉
How does coal formed?
Coal formed millions of years ago when the earth was covered with huge swampy forests where plants – giant ferns, reeds and mosses – grew. As the plants grew, some died and fell into the swamp waters. New plants grew up to take their places and when these died still more grew.
In time, there was thick layer of dead plants rotting in the swamp. The surface of the earth changed and water and dirt washed in, stopping to decaying process. More plants grew up, but they too died and fell, forming separate layers.
After millions of years many layers had formed, one on top of the other. The weight of the top layers and the water and dirt packed down the lower layers of plant matter.
Heat and pressure produced chemical and physical changes in the plant layers which forced out oxygen and left rich carbon deposits. In time, material that had been plants became coal.
Coals are classified into three main ranks, or types: lignite, bituminous coal, and anthracite. These classifications are based on the amount of carbon, oxygen, and hydrogen present in the coal.
😳Why❓❓❓
Why are diamonds so expensive? Why are they considered so valuable?
Diamonds are a highly valued stone. Diamonds have three other crucial ingredients: pressure, heat, and time.
Diamonds are formed in the Earth’s mantle, somewhere between 1 and 3 billion years ago. which is approximately 25% to 75% of our earth’s age.
Formed by heat and pressure, diamonds are then delivered to the Earth’s surface by deep-source volcanic eruptions or the movement of subduction zones that bring the diamonds up to the ocean floor
While colorless diamonds are often considered the most valuable, diamonds exist in a wide range of colors due to mineral contamination or lattice deformation.
For example, black diamonds come from graphite contamination, red diamonds from plastic deformation, purple from plastic deformation and hydrogen contamination, green from irradiation deformation, pink from plastic deformation, and brown, yellow, orange, and blue from nitrogen.
The term “carat” is derived from the carob seed, the ancient unit of measure for diamond weight. As technology evolved, jewelers began using mechanical balances and electric scales to measure carat weight accurately. Precious stones are weighed in carats; a single carat is equal to 200 milligrams. Carat is also a variant spelling of karat, which measures the purity (but not the weight) of gold.
A karat is 1/24 part of pure gold by weight, so 24-karat gold is pure gold
💁🏻♂️ GK TODAY
India holds the *fifth-largest coal reserves in the world. Jharkhand top the list of India’s coal reserves — at more than 26% — and production
Did you know?
Black pepper (Kali Mirchi) contains piperine, a compound which helps to enhance metabolic performance and prevents fat accumulation in the body.
The spice also increases the concentration of good cholesterol.
This round spice is a thermogenic food, which helps to speed up the metabolic process and burn calories more quickly.
Consuming kali mirch also helps you reach your recommended daily vitamin K intake.
Kali mirch also contains essential minerals, providing a considerable amount of manganese and copper.
You need both minerals for a healthy metabolism. Manganese helps your body break down nutrients, while copper aids in energy production.
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Ch Narmada Naveen Kumar |
