SHORT TRICK -Adding Ingredient to Increase Concentration

Duration: 7 min

This video lesson is available to enrolled students.

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Module outline

  1. About the Course: About the Course
  2. Paper-1 & 2 | Basic Numeracy: Ratio and Proportion (Ratios), Divisibility Rules, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Percentage, Average, Mensuration and Geometry, Age Problems, Arithmetic, Statistics, Probability, Profit and Loss, Simple Interest and Compound Interest, Partnership, Speed Mathematics and Basic Mathematics, Algebra, Powers and Exponents (Surds and Indices), Time and Work, Pipe and Cistern, RSSB Specific Videos - Basic Numeracy
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  4. Paper-1 & 2 | General Mental Ability: Mental Ability, RSSB Specific Videos - Mental Ability
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  10. Paper - 2 | Digital Logic Systems: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits
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  12. Paper-2 | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, Relational Calculus, File Organization & Indexing, Transaction Management, Concurrency Control
  13. Paper-2 | Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  14. Paper-2 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  15. Paper 2 | Oops, C++, Java: Language Design, OOPS with C++, Java, .Net Programming, Java Fundamentals
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  17. Paper 2 | Emerging Trends and AI: Emerging Tech Trends, Artificial Intelligence
  18. Paper-2 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Advanced Algorithms
  19. Paper 2 | Data Communication and Network Security: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security, Ethical Hacking
  20. Paper-2 I Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
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  22. Paper-2 | Web Development: JavaScript-Basics, HTML Basics, CSS, XML
  23. Pedagogy: Child Development, Concept of Pedagogy, Psychology, Theories, Inclusive Education, Experiential Pedagogy, Curriculum Framework & Reforms, National Education Policy (NEP) 2020
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AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video, presented by Yash Jain, is a tutorial on solving mixture and alligation problems. The lecture begins with an introduction to the topic, followed by a detailed explanation of a formula for calculating the quantity of an ingredient to be added to increase concentration. The instructor demonstrates this formula with two worked examples: first, calculating how much milk to add to an 80-litre mixture to increase its concentration from 70% to 95%, and second, determining how much lime juice to add to 4 litres of lemon water to increase its concentration from 15% to 20%. The video uses a digital whiteboard for step-by-step calculations, clearly showing the application of the formula: (Quantity of mixture) x (New concentration - Old concentration) / (100 - New concentration). The video concludes with a 'Thanks for Watching' screen.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with an animated title card for 'MIXTURES & ALLIGATIONS' by Yash Jain, a Knowledge Gate Educator. The instructor, Yash Jain, appears in a small window and introduces the topic. The main screen displays a slide titled 'Adding an Ingredient to Increase Concentration', setting the stage for the lesson. The instructor begins to explain the concept of increasing the concentration of a component in a mixture by adding more of that component.

  2. 2:00 – 5:00 02:00-05:00

    The instructor presents the first problem: '80 litres of a mixture of milk and water contains 70% milk. How much milk should be added to the mixture so that the percentage of milk becomes 95%?'. He then introduces the formula for the quantity to be added: (Quantity of mixture) x (New concentration - Old concentration) / (100 - New concentration). He writes this formula on the digital whiteboard and substitutes the values from the problem: 80 x (95 - 70) / (100 - 95), which simplifies to 80 x 25 / 5. He calculates the result as 400 litres, explaining that 400 litres of milk must be added.

  3. 5:00 – 6:44 05:00-06:44

    The instructor moves to the second example: '4 litres of lemon water contains 15% lime juice. How much lime juice should be added to increase the concentration to 20%?'. He applies the same formula: 4 x (20 - 15) / (100 - 20). He writes the calculation as 4 x 5 / 80, which simplifies to 20 / 80, resulting in 0.25 litres. The video concludes with a 'THANKS FOR WATCHING' screen.

The video provides a clear, step-by-step tutorial on solving mixture problems where the goal is to increase the concentration of a component. It establishes a universal formula, (Q x (N - O)) / (100 - N), where Q is the quantity of the mixture, N is the new concentration, and O is the old concentration. The instructor effectively demonstrates the application of this formula with two distinct, real-world examples, reinforcing the method through calculation. The progression from a general concept to specific, worked problems ensures a comprehensive understanding of the topic.

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