In this video, we will look at the mechanism behind Reimer-Tiemann reaction where phenol is converted to ortho-hydroxy benzaldehyde (also called salicylaldehyde).

Practice this concept - https://www.khanacademy.org/sc....ience/organic-chemis

Master the concept of “Reimer-Tiemann Reaction” through practice exercises and videos - https://www.khanacademy.org/sc....ience/organic-chemis

Check out more videos and exercises on “Electrophilic aromatic substitution” - https://www.khanacademy.org/sc....ience/organic-chemis

To get you fully ready for your exam and help you fall in love with “Organic Chemistry”, find the complete bank of exercises and videos for “Organic Chemistry Essentials” here - https://www.khanacademy.org/sc....ience/organic-chemis

Khan Academy is a free learning platform for Class 1-12 students with videos, exercises, and tests for maths, science, and more subjects. Our content is aligned to CBSE syllabus and available in Hindi, English, and many more regional languages.


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Created by
Jitin Nair

In this video you will learn about basic method of division using vedic math which is done by specific method called Nikhilam! This video of divison is among three parts of nikhilam method we have. This is the first part.

Khan Academy is a free learning platform for Class 1-12 students with videos, exercises, and tests for maths, science, and more subjects. Our content is aligned to CBSE syllabus and available in Hindi, English, and many more regional languages.


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Created by
Devashish Phadnis

In this video, we look into the type of insulin that has become a breakthrough in managing diabetes mellitus. We explore how genetically engineered insulin or human insulin is made and how it is so much better than its previous ancestors.

Timestamps:
00:00 - Introduction
01:28 - Animal-sourced insulin
03:53 - How is human insulin made?
06:56 - How was human insulin upgraded?

Practice this concept: https://www.khanacademy.org/sc....ience/in-in-class-12

Check out more videos and exercises on Biotechnology and its Applications: https://www.khanacademy.org/sc....ience/in-in-class-12

To get you fully ready for your exam and help you fall in love with biology, find the complete bank of exercises and videos for Class 12 Biology here: https://www.khanacademy.org/sc....ience/in-in-class-12

Khan Academy is a free learning platform for Class 1-12 students with videos, exercises, and tests for maths, science, and more subjects. Our content is aligned to CBSE syllabus and available in Hindi, English, and many more regional languages.


Experience the joy of easy, seamless, accessible learning anywhere, anytime with Khan Academy!


Subscribe to our YouTube channel - https://www.youtube.com/c/khanacademy

As a 501(c)(3) nonprofit organization, we would love your help!
Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc

Created by Sulagna Das

Caleb Bishop from the Australian National University (anu.edu.au) provides the evidence to support the theory of when prokaryotes evolved into eukaryotes. This as part of a series of educational videos on mass extinctions and expansions.

This clip has been created by the Research School of Earth Sciences (rses.anu.edu.au). These resources are part of a comprehensive program, curriculum matched to the unit 'Introduction to Earth systems'.

This video touches on the following curriculum descriptors:
The diversification and proliferation of living organisms over time (for example, increases in marine animals in the Cambrian), and the catastrophic collapse of ecosystems (for example, the mass extinction event at the end of the Cretaceous) can be inferred from the fossil record (ACSES029)

For practice questions after each video, register an account to access our free senior science courses at https://courses.meristem.anu.edu.au. Teachers can access free lesson plans and in-class activities by joining our teacher community via http://meristem.anu.edu.au/ind....ex.php/new-to-merist

This video is part of meriSTEM Australian senior science educational resources (CC BY-NC-SA 4.0). Email the team (contact.meristem@anu.edu.au) for further information, course access and curriculum links.

This video is part of meriSTEM Australian senior science educational resources (CC BY-NC-SA 4.0). Email the team (contact.meristem@anu.edu.au) for further information, course access and curriculum links.

This video is part of meriSTEM Australian senior science educational resources (CC BY-NC-SA 4.0). Email the team (contact.meristem@anu.edu.au) for further information, course access and curriculum links.

When changing current in one coil induces an EMF in the other, the phenomenon is called mutual induction. The strength of the EMF induced depends on the mutual inductance of the pair of coils. The S.I. unit of mutual inductance is Henry, the same as that of self-inductance.

Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!

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Created by Mahesh Shenoy

"Determining oxidation numbers in magnesium oxide and magnesium hydroxide.

Watch the next lesson: https://www.khanacademy.org/science/chemistry/oxidation-reduction/redox-oxidation-reduction/v/unusual-oxygen-oxidation-states?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry

Missed the previous lesson? https://www.khanacademy.org/science/chemistry/oxidation-reduction/redox-oxidation-reduction/v/oxidation-state-trends-in-periodic-table?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry

Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful.

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.

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The fossil record is one of the best sources of evidence to support evolutionary theory. In this video, That Bio Doc describes how fossils are made, what they tell us about life, and how the fossil record supports the theory of evolution.

In this video, That Bio Doc walks you through the process of DNA replication. DNA replication is a highly conserved and complex mechanism that occurs in all living cells. TBD breaks down this process and discusses the different enzymes and activities needs to replicate an organism's genome. TBD also discusses the differences between prokaryotic and eukaryotic DNA replication.

Music:
Cheery Monday by Kevin MacLeod

Link: https://incompetech.filmmusic.....io/song/3495-cheery-
License: http://creativecommons.org/licenses/by/4.0/

In this video, That Bio Doc introduces you to the sweet world carbohydrates! Come see how sugars combine in different ways to make life as we know possible.

Music:
Cheery Monday by Kevin MacLeod

Link: https://incompetech.filmmusic.....io/song/3495-cheery-
License: http://creativecommons.org/licenses/by/4.0/

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This video is part of meriSTEM Australian senior science educational resources (CC BY-NC-SA 4.0). Email the team (contact.meristem@anu.edu.au) for further information, course access and curriculum links.

This video is part of meriSTEM Australian senior science educational resources (CC BY-NC-SA 4.0). Email the team (contact.meristem@anu.edu.au) for further information, course access and curriculum links.

This video is part of meriSTEM Australian senior science educational resources (CC BY-NC-SA 4.0). Email the team (contact.meristem@anu.edu.au) for further information, course access and curriculum links.

This video is part of meriSTEM Australian senior science educational resources (CC BY-NC-SA 4.0). Email the team (contact.meristem@anu.edu.au) for further information, course access and curriculum links.

This video is part of meriSTEM Australian senior science educational resources (CC BY-NC-SA 4.0). Email the team (contact.meristem@anu.edu.au) for further information, course access and curriculum links.