Featured Post

CHEMISTRY OF CHOLESTEROL AND HEART DISEASES

Image
 CHEMISTRY AND HEART CHOLESTROL- SOURCE- WAVEMAGAZINEONLINE What do we know about cholesterol or what is cholesterol? Cholesterol is a waxy, fat-like substance that are needed to make some useful hormones and is found in our blood. Cholesterol is actually needed to build certain kind of cells, but the it's presence in large quantities can have harmful effects too. It comes from two sources, first, our liver makes cholesterol that we need, the other source is, it can be obtained from food which are derived from other animals. Now, there are two types of cholesterol- 1. LDL Cholesterol- LDL stands for "low-density lipoprotein". This type of parcel protein transports cholesterol from liver to rest of the body, high levels of LDL cholesterol leads to high chances of cardiovascular diseases. It is sometimes referred to as bad cholesterol. 2. HDL Cholesterol- "HDL" stands for "high-density lipoprotein". This type of protein transports cholesterol back to liv
1 comment

COAL- All you need to know about it

EVEN THE DIAMOND COULDN'T SHINE ON THEIR OWN BUT THEY REFLECT, BUT THE BURNING COAL DID!!

 

WHAT IS A COAL?

Coal can be described as a complex mixture of compounds of CARBON, HYDROGEN and OXYGEN and some free carbon. Some small amounts of sulphur and nitrogen are also be present in coal. It is a combustible black sedimentary rock and is formed as rock strata.

TYPES OF COALS-

Coal is found in variety of forms depending on the degrees of compression and the depth and time of burial. There are mainly four types of coal, namely-
  • PEAT- Decaying plants in swamps produce peat.
  • LIGNITE- Lignite is a low grade brown coal, which is soft with high moisture content.
  • BITUMINOUS- Coal that has been buried deep and subjected to high pressure and increased temperature is bituminous coal.
  • ANTHRACITE- Anthracite is the highest quality coal.

HOW COAL MADE INDUSTRIAL REVOLUTION POSSIBLE-

We all know that, in ancient times wood was the most common source of energy. The energy of flowing water and wind was also used but in a limited manner. The exploitation of COAL made the industrial revolution possible. Increasing industrialization lead to a better quality of life all over the world. It has also called the global demand for energy to grow on a tremendous rate.
The growing demand of energy was fulfilled by burning of fossil fuels like- coal.

Related topics to science-

USES OF COAL-

  • Coal is used for heating purposes in homes.
  • It is used in the manufacturing of petrol and synthetic natural gases.
  • It is used in the manufacturing of natural gas.
  • It is used in thermal power plants for the generation of electricity.
  • It is used for extraction of metals by acting as a reducing agent(coke).

IS IT A CLEAN FUEL OR IT POLLUTES ENVIRONMENT?

The main disadvantage of using fossil fuels is that the burning of fossil fuels causes a lot of pollution in the environment. The following points describes it-
  • The burning of fossil fuels produces ACIDIC GASES such as sulphur dioxide and nitrogen oxides. These gases cause acid rains. The acid rain damages trees and plants(including crops), reduces fertility of soil by making it acidic, it damages buildings by corroding them slowly, damages the Monuments made of marble stones and statues are also get damaged.
  • The burning of fossil fuels puts a large amount of CARBON DIOXIDE which goes into air. Though carbon dioxide gas is not harmful immediately, it damages the environment in the long run. The presence of increased amount of CO2(Carbon Dioxide) causes an increase in the greenhouse effect, which leads to excessive heating on the Earth.
  • The burning of coal produces SMOKE which pollutes the air.
  • It behinds a lot of ASH and also leaves behind tiny particles of ash, known as FLY-ASH into the air causing air pollution.

Some other related topics-


HOW CAN WE CONTROL THE POLLUTION CAUSED BY COAL?

The pollution caused by burning of coal can be controlled to some extent by increasing the efficiency of the combustion(burning) process. This will become more clear from the following points.
  • The pollution of air can be minimized or controlled by fitting the vehicles with the catalytic converters.
  • The pollution of air caused by the burning of the coals in factories and thermal power plants can be controlled by washing down the smoke and acidic gases in water in a scrubber.
  • The pollution can also be controlled in factories and thermal power plants by installing electrostatic precipitators in their chimneys.
Topics related to cyber security-

THANK YOU FOR READING,
ANY CHANGES WILL BE APPRECIATED
STAY TUNED😊





Comments

Post a Comment

Popular posts from this blog

THE HUMAN EYE- WORKING AND CONSTRUCTION

Image
Our eye is the most important organ gifted to us by god. Eye is a delicate organ which once destroyed cannot be cured. It helps us to see the beautiful and bright world around us. But ever wondered how the eye works? What are the tissues and cells that makes up an eye? The first thing to know is that, the main parts of eyes are- Cornea, Iris, Ciliary Muscles, Eye lens, Retina and Optic Nerve. It is spherical in shape with a diameter of 2.3cm CONSTRUCTION OF EYES The front part of the eye is called cornea . It is made up of a transparent substance and it bulges outwards. The light coming from the objects enters the eyes through cornea. Behind the cornea is the iris . Iris is a flat, coloured, ring-shaped membrane behind the cornea of the eye. There is a hole in the middle of the iris which is called Pupil of the eye. Thus, we can say thet pupil is a hole in the middle of the iris. The pupil appears BLACK  because no light is reflected from it. Then comes the eye lens. It is a convex len
Read more

WHAT IS A GOOD FUEL?

Image
 GOOD FUELS WITHOUT AN END TO THE BURNING OF FOSSIL FUELS, COAL ESPECIALLY, MOST OF US WILL LIVE SHORTER LIVES. I AM HOPEFUL BUT VERY, VERY CONCERNED  All your questions like- Write it's properties to find whether it is clean fuel or not and  Some commercial uses of fuel, will be answered here, enjoy reading. Some terms before starting- CALORIFIC VALUE- The amount of heat produced by burning a unit mass of the fuel completely is known as its CALORIFIC VALUE. IGNITION TEMPERATURE- The minimum temperature to which a fuel must be heated so that it may catch fire and start burning, is known as IGNITION TEMPERATURE. The definition of a good fuel cannot be given in one line or sentence. There are various conditions that makes a fuel good. We also need to keep in mind that, by saying the term 'GOOD FUEL' we are comparing one fuel with another. None of the fuel can be the best, but can be better in comparison to another. CHARACTERSTICS OF A GOOD FUEL- HIGH CALORIFIC VALUE- A good f
Read more

EIFFEL TOWER- POWER OF TRIANGLES

Image
 In this blog, you can learn how architects use mathematics, geometry, other math principles like surface area(might be your favourite), volume, ratios. GEOMETRY is used everywhere in the world. It can be found from artworks to mobiles, laptops and to the large structures, monuments and buildings. Shapes are the building blocks in architecture. Below are some examples of Mathematics being used in constructing the world!!   LETS START- EIFFEL TOWER(The Triangular Structure) PARIS, FRANCE TRIANGLES are the strongest shapes when it comes to building large structures. The triangles are the strongest shapes because of their ability to hold large strength without snapping. If all the three sides of triangle are made equal, then it will be able to distribute the whole weight equally in a large structure.   The tower is 1063 feet(30,000cm) tall and its construction cost 7,799,401 French Gold Francs(10 crores) in 1889.  We know the history of the tower that EIFFEL TOWER is situated in FRANCE
Read more