Combustion and Flame | Class 8 Science Chapter 4 | Combustion and Flame full chapter
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- čas přidán 31. 08. 2022
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Topics covered in this video -
✔️ Combustion and Flame full chapter
✔️ Combustion and Flames Full Chapter Class 8 Science | NCERT Science Class 8 Chapter 4
✔️ Combustion and Flame L1 | NCERT Class 8 Science Chapter 4 | Young Wonders
✔️ combustion and flame class 8
✔️ Class 8 Combustion and Flame
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Kon kon exam ke ek din phle pdh rha he 😂😂
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Studying 2 hour before exam
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Mai toh majburi me summer vacation me padh rha hu
Sir tomorrow is my exam but I don't know nothing then I see your videos and now I prepared.
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me lol 😅
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18:20 Option 'b' is correct
Fire extinguisher
Thank you sir for explaining tomorrow is my exam
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Same here
Legenf 11:58 😊
Same 😅
Exam is near
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Sir. You is our God because your teaching is like amrut very easy word and only useful topics. We got nice Marks in SST and science . Thank u sir.very much
Thankyou sir for your explanation tomorrow is my exam
My exam is tomorrow
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b option as an electric flame contains electricity through which we will get shock if we poar water in it so,
hence answer b is the correct option.
7 cores
Sate
Cores
B
(b) sir because if we use water to stop the fire then it will be produce electric current so, we have to use fire extinguisher in this type of situations
we will choose option (b) fire extinguisher we can't use water because it is good conductor of electricity
If you did have pure graphite to burn, a simple flame wouldn't be hot enough to combust it. You need to sustain temperatures of around 1000 − 2000 ∘ C in order for pure carbon to burn.
Mannu sir message padhte he kya
Ha kisi kisi ke
0:00 phir kiske liye hai ye video?
19:27 19:27
Point hai😂😂😂😂😂
to stop electric fire we use fire extinguisher because it have CO2 which stop supply of Oxygen and the burning of fuel is stopped
1:45
Sir how to find calorific value
Thanks bro for helping
10:04
Option b kiuki agar hun elasticity me water ka use karenge to humko current b lag sakta h ❤
Main exam ke 2 ghante pehle dekh raha hu
School me
Thanks sir nice video ☺️📸
CO2 इस रिक्वायर्ड फॉर द इलेक्ट्रिक fire और पेंसिल को जलाने के लिए 600 तो 80° का सेल्सियस का उपयोग होग
Sir if fire is not caught in oxygen so when a rocket crash on planets so they will caught fire ?
In space there is no air to help create a fired.So explosion looked different than on earth Without obsession a fire cannot exist but But an explosion.
Can happen if there is an oxidizer available
(B) FIRE EXTINGUISHER
how to stop electrical fire =fire extinguisher
Thanks bhaiya. tommoro is my exam ❤ thanks for the best explanation
B option because water produce electric current we use fire extinguishers
Bhai pencil kha sai lii
Sir you are explain very well 😊😊
I Love you
When there is an electrical fire or oil fire we can use fire extinguisher or we can say co2
(b) 😊😊
19:23
Fire extinguisher because water is a good conductor of electricity
Nice ice
18:27 Co2 fire extinguisher
18:20 b fire extinguisher
Class mai toh kuchh semjh ni aaya pr yha aa geya 😊😊thnx sirrrrrr ji😊😊
18:15 We would use a Fire Extinguisher because water is a good conductor of electricity...Therefore if we use water chances are that we can get electric shock.😊😊
Water is not a good conductor of electricity..it's a bad conductor!
Thank you so much sir for this session Dil se shukriya 🙏🏻🙏🏻
How to stop electric fire option a water option b extinguisher fire correct answer is extinguisher fire
18:32
B fire extinguisher
Fire extinguisher sir also sand and blanket bhi
I will use fire extinguisher to put off the fire...
So I can say (b) option is correct instead of option (a)water...
I wil also .......
I will ran away
Correct
Thanks you mannu bhaiya
Fire Extinguisher becouse
Water is not used to control fire involving electrical equipment because it may conduct electricity and harm those trying to douse the fire b) is correct 😊
option B ,If we use water so we will get a great shock which is very harmful.
Option B is correct,
because if we use water to stop the fire then it will be produce electric current so, we have to use fire extinguisher in this type of situations
Bhaiya ap chapter ko itna short kese bana dete ho trick baton na please
18:45 option b
With the help of carbon dioxide we can put off electrical, oil fire
Sir sand also can be used
No sand doesn't catch fire...
No
Yey
Pencil ignition temperature is 400 Celsius because pencil lead to mixture of clay and graphite
🎉❤
18:27
B
Thank you so much sir tomorrow is my exam good explation
All the best
thankyou sir your style of study is amazing tomorrow is my science exam and my concepts are clear
thankyou
Extinguisher is the best option 18:41
18:20 option b is correct
option (b) fire extinguisher because water is a good conductor of electricity
B option is correct because when we try to stop the electrical fire by water it can give us a dangerous shock 🤯
Option B Fire extinguisher because water is a good conductor of electricity
7:25 7:28 7:30 7:31 7:37 7:37 7:38 7:38 7:38 7:38 7:38 7:39 7:39 7:40 7:40 7:40 7:40 7:40 7:41 7:41 7:41 7:41 7:42 7:42 7:42 7:43 7:43 7:43 7:43 7:44 7:44 7:44 7:44 7:44 😂
Is ignition temperatures is same for everything
no. all things have different ignition temperature ..for example the ignition temperature of wood is 250*-300* C, charcoal igniton temperature is 340* c
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15:07 bohot zada pasand hai sir ko
B option fire extinguisher
Because water is not suitable for electrical wire...
b option is correct because it contain co2 which forms a layer above the combustion and cut off the oxygen which is termed as smothering and it led to the stop of fire
B option
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Who is you math master
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Option no B is correct of Question Fire extinguisher
Sar thank you for teaching tomorrow is my exam you are the best teacher in the world
Fire instrumentation be❤❤🎉🎉 thank you sir for the explanation
Tomorrow is my exam 😢😢
5:06 600-800 degrees Celsius
18:15 *option B* Fire extinguisher
Option B is correct because water is Dengerous for electricity
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B option Fire extinguisher
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Same bro
4:44 the burning temperature of pencil is 600degree to 800 degree
18:52
B) 🧯 fire extinguisher
To stop the fire of electrical is fire extinguisher
18:44 18:44 18:44 18:44
Pencil ka Jalne ka temperature -38. 83
Fire extinguisher 18:28
Bhai q ka ans h b) fire extinguisher kuki water se hame shok lag sakta h because he is a electric ⚡
And 600-800°C pencil to catch the fire
Op b because the water is produce electricity and this is a electrical object
Bhaiya tomorrow is my final exam and I'm going to finish 8 ch in one dayyy....💀
Btw your explanation is soo... good 👍
us bro us
0:47 Systumm
😂😂
Arre 😂
Q. How to stop electrical fire ans :- extinguisher (b) .
Option (b) sir ✔️
Another Question for sir 🙏
Why milk is not use as a fire extinguisher?
Fire Extinguisher (B) Option
Answer is option (b)
You will explain very well sir
To put off electrical fire we have to use fire extinguisher
18:17 b
B) Fire Extinguisher
we should never use water to extinguish fire because water is made up of oxygen which will not extinguish the fire but may increase it(H2O) H stands for hydrogen and O stands for Oxygen
Sir love you sir
Thank for making this great video
B option
usually around 600-800 degrees Celsius (1,112-1,472 degrees Fahrenheit)🧐🤔