Learn All About Coke, Coal Tar, and Coal Gas | Coal and Petroleum | Class 8
Summary
TLDRIn this educational session, Chemistry expert Kriti introduces viewers to the world of coal, a vital fuel source. Through the process of destructive distillation, coal yields three main products: coke, coal tar, and coal gas. Coke, a nearly pure carbon, is used as a fuel and in metal extraction and steel manufacturing. Coal tar, a thick liquid with a foul odor, contains over 200 substances and is a precursor for everyday items like dyes, drugs, and plastics. Coal gas, a combustible mixture of gases, serves as an excellent fuel with high calorific value. Kriti also poses a homework question about anthracite, encouraging viewers to engage further with the material.
Takeaways
- π₯ Coal is a major source of fuel globally and is the only solid fossil fuel.
- π The session is led by a Chemistry expert named Kriti who is introducing the world of fuels.
- π Coal is a hard rock that is typically black or brown and is used to generate heat, power, and energy.
- π The main products derived from coal are coke, coal tar, and coal gas, obtained through the process of destructive distillation.
- π₯ Coke is the solid residue left after the distillation process, and it is almost pure carbon.
- π§ Coal tar is a thick black liquid with an unpleasant smell, containing a mixture of over 200 substances.
- πͺοΈ Coal gas is a mixture of gases like hydrogen, methane, and carbon monoxide, known for its high calorific value.
- π¨ Coke is used as a fuel and a reducing agent in metal extraction and steel manufacturing.
- π οΈ Coal tar is used as a starting material for manufacturing various substances, including synthetic dyes, drugs, perfumes, plastics, and paints.
- π¬ Destructive distillation of coal is a process that involves heating coal in the absence of air to produce valuable by-products.
- β The video ends with a homework question about anthracite, a term related to coal, which the audience is encouraged to explore and discuss.
Q & A
What is the primary purpose of coal as a resource?
-Coal is a valuable resource primarily used to generate heat, power, and energy.
What are the three main products obtained from the destructive distillation of coal?
-The three main products obtained from the destructive distillation of coal are coke, coal tar, and coal gas.
What is the process of destructive distillation of coal?
-Destructive distillation of coal is the process of heating coal in the absence of air, which breaks it down to produce coke, coal tar, and coal gas.
What is the main component of coal gas?
-Coal gas, also known as Town Gas, is a mixture of different gases including hydrogen, methane, and carbon monoxide.
Why is coal gas considered an excellent fuel?
-Coal gas is considered an excellent fuel because it is combustible and has a high calorific value, meaning it releases a lot of energy when burned.
What is coal tar and what is its composition?
-Coal tar is a thick black liquid with an unpleasant smell, composed of a mixture of about 200 substances, including benzene, naphthalene, phenols, and other compounds.
What are the uses of coal tar in everyday life?
-Coal tar is used as a starting material for manufacturing various substances such as synthetic dyes, drugs, perfumes, plastics, and paints.
What is coke and what are its uses?
-Coke is a tough, porous, and black solid that is almost pure carbon. It is used as a fuel in homes and factories, as a reducing agent in metal extraction, and in the manufacturing of steel.
What is the difference between the combustion of coal in the presence of air and destructive distillation?
-When coal is burned in the presence of air, it produces carbon dioxide without any other valuable products. Destructive distillation, on the other hand, involves heating coal in the absence of air to produce coke, coal tar, and coal gas.
What is the correct condition for the destructive distillation of coal?
-The correct condition for the destructive distillation of coal is the absence of air.
What is anthracite and what was the homework question related to it?
-Anthracite is a type of coal known for its high carbon content and energy density. The homework question asked viewers to figure out what anthracite is and share their answers in the comment section.
Outlines
π₯ Introduction to Coal as a Fuel Source
This paragraph introduces the topic of coal as a significant fuel source in the world. The speaker, Kriti, a chemistry expert, welcomes the audience to a session exploring the world of fuels. Coal is described as a hard rock that is typically black or brown and is used to generate heat, power, and energy. The session aims to discuss various products derived from coal, such as coke, coal tar, and coal gas, which are obtained through the process of destructive distillationβa method of heating coal in the absence of air. Kriti encourages viewers to like and subscribe to continue learning about these products and their applications.
π The Products of Coal's Destructive Distillation
This paragraph delves into the three main products derived from coal through destructive distillation: coke, coal tar, and coal gas. Coke is the solid residue left after the process, which is almost pure carbon and used as a fuel and reducing agent in metal extraction and steel manufacturing. Coal tar is a thick black liquid containing over 200 substances, used as a starting material for manufacturing everyday items like synthetic dyes, drugs, perfumes, plastics, and paints. Coal gas, also known as Town Gas, is a mixture of combustible gases like hydrogen, methane, and carbon monoxide, making it an excellent fuel with a high calorific value. The paragraph also includes a brief interactive quiz for the audience to test their understanding of the concepts discussed.
Mindmap
Keywords
π‘Coal
π‘Fossil Fuel
π‘Destructive Distillation
π‘Coke
π‘Coal Tar
π‘Coal Gas
π‘Calorific Value
π‘Reduction Agent
π‘Synthetic Dyes
π‘Petrochemicals
π‘Anthracite
Highlights
Coal is a major source of fuel worldwide and the only solid fossil fuel.
Join this session to explore the world of fuels and learn about coal.
Coal is a hard black or brown rock used to generate heat, power, and energy.
Various valuable products can be derived from coal.
The three main products from coal are coke, coal tar, and coal gas.
Destructive distillation of coal involves heating it in the absence of air.
When coal is burned in the presence of air, it produces carbon dioxide without other valuable products.
Destructive distillation is the process of heating coal without air to produce coke, coal tar, and coal gas.
Coke is the solid residue left after destructive distillation of coal.
Coal tar is a thick black liquid collected at the bottom of the test tube during distillation.
Coal gas is a mixture of combustible gases like hydrogen, methane, and carbon monoxide.
Coal gas has a high calorific value and is used as an excellent fuel.
Coal tar contains over 200 substances and is used as a starting material for manufacturing various products.
Coke is used as a fuel, reducing agent in metal extraction, and in steel manufacturing.
Nylon is not a product obtained from coal; it comes from petrochemicals.
Destructive distillation of coal requires the absence of air.
Subscribe for more quality content on chemistry and fuels.
Homework question: What is anthracite?
Transcripts
[Music]
a major source of fuel throughout the
world is coal in fact it's the only
solid fossil fuel to know more about
coal join this session and together we
are going to explore the world of fuels
so good evening everyone my name is
kriti and I am your Chemistry expert and
I welcome you all
Cole is actually a hard rock that is
typically black or brown in color it's a
valuable resource used to generate heat
power and energy but you know what there
are various products that we get from
coal and today's concept bite is all
about that so fatafat hit the like
button and subscribe button and then we
get started
now coming to the three main products
that we get from coal what are they they
are Coke coal tar and cold gas but how
do we get these well let's see
buy the process of destructive
distillation of coal it's a process of
heating coal in the absence of air so
when coal is burned in the presence of
air it burns to you know produce carbon
dioxide with no other products of value
so here the catch is absence of air
presence
let's destructively distillate cool now
and remember if we eat anything in the
absence of air we call it destructive
distillation only okay cello it's time
to disappear now so that I can explain
you the process
I hope you all can see the screen
and let's get started so what we've done
over here is we've taken finely powdered
coal you know test tube and we've heated
it so as it breaks down it produces Coke
coal tar and coal gas
coal star is collected at the bottom of
the other test tube and coal gas escapes
through the side of the test tube
now the black residue left out in the
test tube is Coke so remember Coke is
The solid residue coal tar is in the
liquid state and coal gas is in the
gaseous
state so these three products are super
useful Charlie time to appear again
so I hope you remember presence of airme
carbon dioxide
so let's understand these three products
that we get from coal by the destructive
distillation of coal cello let's get
started so let's start with the very
first one that is coal gas now coal gas
is also known as Town Gas and it's a
mixture of different gases like hydrogen
methane and carbon monoxide
now these gases that you can see they're
actually combustible making coal gas in
excellent Fuel and having high calorific
value so it gives out a lot of energy
when it is being burned no wonder it's
used as a fuel
so I hope we'll quickly
now we have cold tar which is actually a
thick black liquid with unpleasant smell
it's actually a mixture of 200
substances like benzene naphthalene
phenols
in substances and the products obtained
from coal are you know basically used as
starting materials for manufacturing of
various substances used in everyday life
such as synthetic dyes drugs perfumes
Plastics paints is
now coming to Coke so moving on to cook
now it's actually
tough porous and black in color and it's
actually almost pure form of carbon it
is used as a fuel in homes and factories
and not just as a fuel
but it's largely being used as a
reducing agent in the extraction of
metals from their oars and it is also
used in the manufacturing of
steel as well so these were the three
products that we get from coal and you
know the process it's destructive
distillation and now it's time to solve
some questions
so I'll give you 30 seconds for each and
every question Charlie question number
one
which of the following is not obtained
from coal you have 30 seconds to answer
this pains explosives drugs nylon
foreign
that is a product of coal so we are
getting it from coal but nylon fiber is
actually something that we obtained from
petrochemicals
moving on to the next question now
next question says which of the
following conditions is suitable for
destructive distillation of coal
presence of fear absence of heat
presence of nitrogen absence of air
options
presence of air absence of heat presence
of nitrogen absence of air now I have I
think I emphasized on this point uh
multiple number of times now it's up to
you
again
for this question also I've given you 30
seconds I hope you all are posting the
correct answer in the chat
Charlie everyone three two one time up I
hope again you people have marked option
D because that is the correct answer
cool tar
or cold gas
we get Coke coal Taran coal gas
carbon dioxide which is not of much use
Hannah I told you this point so the
catch is absence of air
with this we've come to the end of this
concept bye so quickly like the video
and don't forget to subscribe for more
such quality content also I have a
homework question for all of you what is
anthracite anthracite I'm sure you've
heard about this term so I want all of
you to figure out and let me know in the
comment section I'm waiting for your
answers take care bye
5.0 / 5 (0 votes)