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BLOWING MIND

13 Dec 2021, 13:42

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Things you've ever heard of.
Facts you have never seen before
Best facts from around
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Things you've ever heard of. Facts you have never seen before Best facts from around 🔊𝗣𝗼𝘄𝗲𝗿𝗲𝗱 𝗕𝘆:- @NinjaNetworkop📢📢 🔊𝗣𝗼𝘄𝗲𝗿𝗲𝗱 𝗕𝘆:- @TheHazardNetwork 📢 Join and share Official bot -: @Hsjsbeuebdue_bot Part of @Worldofknowledgeop1

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BLOWING MIND

13 Dec 2021, 13:07

#fact

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BLOWING MIND

13 Dec 2021, 13:07

#fact

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BLOWING MIND

13 Dec 2021, 09:54

Miss Universe of 2021... Harnaaz Sandhu...👑👑👑👑👑

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BLOWING MIND

13 Dec 2021, 09:30

(1733-1804), the English philosopher and experimental chemist, is best known for his contribution to the chemistry of gases. He discovered 10 new gases including oxygen, sulphur dioxide and carbon monoxide.

#KnowYourScientist

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BLOWING MIND

13 Dec 2021, 09:00

Forward from: Cloudsthetics 🌧📚

synthetic fibres and plastic notes.pdf

244.2Kb

Handwritten Notes
For Class : 8th
Topic : Synthetic Fibres And Plastics
Written By : Admin
For more : @cloudsthetics_12
If you want notes on any topic
Msg on @studystudyyy

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BLOWING MIND

13 Dec 2021, 04:44

The French chemist Antoine Lavoisier conducted his famous 12-day expiriment in 1775. He heated some mercury in a retort. The mouth of the retort was inserted in an inverted bell jar placed in a trough filled with mercury. The heating was continued for 12 days.
He observed the formation of a red layer of mercury (II) oxide on the surface of mercury. He also observed that the level of mercury in the bell jar rose by one-fifth of the total volume of the bell jar. He found that the remaining gas in the bell jar could not support combustion.

#discoveryofoxygen

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BLOWING MIND

13 Dec 2021, 04:31

In 1774, Joseph Priestley, an English chemist, discovered oxygen by heating mercury (II) oxide using the infrared rays of the sun.

#discoveryofoxygen

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BLOWING MIND

13 Dec 2021, 04:25

In 1772, Carl Wilhelm Scheele, a Swedish chemist, obtained oxygen by heating potassium nitrate (KNO3) and mercury (II) oxide (HgO). He called the gas 'fire air' since it was found to support combustion.

#discoveryofoxygen

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