Sir-Rai - Invidious

Sir-Rai

Welcome to a concept-based learning channel for Science, Chemistry, Physics, and English. This channel is designed for students who want clear understanding, practical knowledge, and exam-focused preparation. Topics are explained step by step from basic to advanced level, with focus on concepts instead of rote learning.
Our content supports preparation for MDCAT, JEE, NEET, board exams, competitive exams, and other national & international tests. Each lesson includes practical examples, numericals, MCQs, past paper discussion, and smart exam tips to help students achieve better results.
You will learn Physics with strong fundamentals, Chemistry (Physical, Organic & Inorganic) in simple language, and English grammar, vocabulary, speaking, and writing skills. This channel is ideal for Matric, FSC, O/A Levels, college students, and exam aspirants.
If you want concept clarity, practical learning, and exam success, this channel is for you.
Subscribe now and start smart learning today.

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2:49

Charles' Law Tricks & Concepts | Moolchand Sir Rai Learno hub Class 9 & 11

Sir-Rai

Shared 1 week ago

12 views

15:10

Basics of Physical Chemistry | Atoms, Subatomic Particles & Mole Concept || By Sir Rai

Sir-Rai

Shared 1 month ago

49 views

13:06

CHEMICAL BONDING|| Covalent Bond|| Complete Concepts || Tricks and PYQ||NEET||JEE 2026

Sir-Rai

Shared 1 month ago

31 views

15:43

CHEMICAL BONDING IN one Shot || Complete Concepts || Tricks and PYQ||NEET||JEE 2026

Sir-Rai

Shared 2 months ago

185 views

8:37

SIGNIFICANT FIGURES || CLASS Chapter 02|| Units and measurements || JEE MAINS ||NEET

Sir-Rai

Shared 2 months ago

56 views

6:04

Advanced Rules of Balancing Chemical Equations || Master Method for Class 9–12

Sir-Rai

Shared 2 months ago

41 views

10:49

How to Balance Chemical Equations Fast || Easy Method for Class 9, 10, 11 & 12 (Step by Step)

Sir-Rai

Shared 2 months ago

23 views

7:49

What is Ionization? 🤯 Complete Concepts + Examples | Physics/Chemistry

Sir-Rai

Shared 2 months ago

53 views

12:45

Naming Alkyne-IUPAC Nomenclature & Common Names// Unsaturated Hydrocarbon

Sir-Rai

Shared 2 months ago

32 views

3:57

Why Ice Floats & Lakes Freeze from the Top – Amazing Chemistry Explained.

Sir-Rai

Shared 2 months ago

28 views

14:33

Naming Alkenes || IUPAC Nomenclature Practice, substituents||EZ System|| Cycloalkene, chemistry

Sir-Rai

Shared 2 months ago

25 views

15:00

Alkene nomenclature & iupac naming | chemistry class xii video #02

Sir-Rai

Shared 3 months ago

20 views

14:06

Alkene Rules & IUPAC Naming | Class XII Chemistry

Sir-Rai

Shared 3 months ago

23 views

13:20

Isomers of Alkane || n-Alkane, Iso, Neo Explained || Chemistry Class 12 Super Shot.

Sir-Rai

Shared 3 months ago

30 views

15:09

Nomenclature of Alkane | Complete Rules, Family & Classification Explained

Sir-Rai

Shared 3 months ago

24 views

6:50

What is Alkane? Complete Classification Explained | Class 12 Chemistry One Shot.

Sir-Rai

Shared 3 months ago

44 views

7:40

Nomenclature of Alkene | Super Method One Shot Class | Video #01 | Easy Chemistry Trick.

Sir-Rai

Shared 3 months ago

35 views

3:40

Difference Between N-Alkane, Iso-Alkane & Neo-Alkane | Organic Chemistry.

Sir-Rai

Shared 4 months ago

32 views

3:11

IUPAC Naming of Closed-Chain Hydrocarbons | Class 12 Chemistry | One Shot Trick.

Sir-Rai

Shared 4 months ago

21 views

7:41

IUPAC Nomenclature of Alkanes – Step-by-Step Rules | Class 12 Chemistry | Part .03

Sir-Rai

Shared 4 months ago

24 views

15:17

IUPAC Naming of Alkanes 🔥 Complete Rules & Tricks || Class 11–12 Chemistry || One Shot.

Sir-Rai

Shared 4 months ago

23 views

9:43

IUPAC Rules for Naming Alkanes || Nomenclature of Alkanes || Class 11 Chemistry.

Sir-Rai

Shared 4 months ago

30 views

9:08

Hybridization of IF₇ Explained || sp³d³ Hybridization, Geometry, Shape & Bonding || Class 12.

Sir-Rai

Shared 4 months ago

29 views

9:03

Hybridization of SF₆ Explained || sp³d² Hybridization & Octahedral Geometry || Class 12 Chemistry.

Sir-Rai

Shared 4 months ago

42 views

5:46

PCl₅ Hybridization in 5 Minutes || sp³d Hybridization & Trigonal Bipyramidal Shape.

Sir-Rai

Shared 5 months ago

22 views

7:24

Why BF₃ is sp² Hybridized? || Geometry, Shape & Bond Angle || NEET||JEE.

Sir-Rai

Shared 5 months ago

61 views

5:20

Geometry of Water (H₂O) and Ammonia (NH₃) Explained | VSEPR Theory, Bond Angle, Lone Pair Effect.

Sir-Rai

Shared 5 months ago

34 views

10:50

How SP3 Hybridization Forms Tetrahedral Geometry || CH4 Structure.

Sir-Rai

Shared 5 months ago

57 views

22:43

Why CO₂ is Linear? || SP Hybridization with Examples || BeCl₂ & C₂H₂

Sir-Rai

Shared 5 months ago

33 views

17:25

Hybridization Trick & Concepts || sp, sp², sp³, sp³d, sp³d², sp³d³ || Part-2.

Sir-Rai

Shared 5 months ago

43 views

26:43

Hybridization Part-I || What is Hybridization? Types, Rules & Examples | Chemistry Basics

Sir-Rai

Shared 5 months ago

18 views

21:55

Past Simple Tense in English || Use, Formula & Daily Life Examples.

Sir-Rai

Shared 5 months ago

60 views

4:08

Introduction to Past Tense | Past Tense Basics with Examples | English Grammar Lesson.

Sir-Rai

Shared 5 months ago

51 views

38:51

Present Perfect Tense with Proper use of Since & For || English Grammar Lesson.

Sir-Rai

Shared 5 months ago

48 views

18:35

Metallic Bond || Electron Sea Theory | Explained | Electron Gas Theory |Chemistry Concept Simplified

Sir-Rai

Shared 5 months ago

89 views

29:07

Present Perfect Tense || Have Has + V3 || Easy Explanation.

Sir-Rai

Shared 5 months ago

70 views

23:49

Coordinate Covalent Bond (Dative Bond) Explained || Definition, Examples & Mechanism || Chemistry.

Sir-Rai

Shared 5 months ago

39 views

34:18

Present Continuous Tense || Definition, Rules, Examples || Urdu + English || Spoken English.

Sir-Rai

Shared 5 months ago

113 views

28:14

Hydrogen Bond Explained || Definition, Types, Examples & Importance | Chemistry for JEE, NEET, MDCAT

Sir-Rai

Shared 5 months ago

65 views

40:01

Present Simple Tense || Definition, Rules, Structure & Examples || Grammar for FSC / CSS / FPSC

Sir-Rai

Shared 5 months ago

48 views

11:31

Learn Tenses in English Grammar With Examples || Present Tenses, Past Tenses and Future Tenses.

Sir-Rai

Shared 5 months ago

67 views

30:53

11Chap:04 ||Hydrogen Bond || Definition, Types, Examples & Importance || T JEE /NEET/MDCAT

Sir-Rai

Shared 5 months ago

42 views

16:24

Formal Charge Explained in Easy Way | Chemistry Trick for Exams | Structure & Examples.

Sir-Rai

Shared 5 months ago

74 views

8:00

Valence Bond Theory (VBT) | Complete Class Presentation | Sigma & Pi Bond Explained | Chemistry

Sir-Rai

Shared 6 months ago

95 views

12:42

Hydrogen Bonding 🔥 Complete & Powerful Concept | Secondary Bond | Types, Examples & Importance.

Sir-Rai

Shared 6 months ago

52 views

26:28

MOT Chemistry 🔥 Molecular Orbital Theory with Easy Examples || Sigma & Pi

Sir-Rai

Shared 6 months ago

85 views

35:30

11 Chap 4|| Chemical Bonding 05|| Valence Bond Theory VBT|| Difference Between Sigma and Pi Bond.

Sir-Rai

Shared 6 months ago

94 views

26:07

Sigma & Pi Bonding Explained | Atomic Orbital Overlap | Sigma vs Pi Bond Difference | Chemistry.

Sir-Rai

Shared 6 months ago

66 views

22:40

Master Ionic Bond Today! | Lewis Dot Structure Simple Technique for Class 9–12.

Sir-Rai

Shared 6 months ago

42 views

9:58

Covalent Bond & Lewis Structures Explained | Build Any Molecule or Ion Easily!

Sir-Rai

Shared 6 months ago

33 views

11:31

Covalent Bond & Its Types | Easy Explanation with Examples | Chemistry Lecture for All Exams 🔥

Sir-Rai

Shared 6 months ago

45 views

10:19

Types of Chemical Bonds | Ionic, Covalent, Metallic Bonding | Most Simple & Viral Chemistry Lecture.

Sir-Rai

Shared 6 months ago

78 views

13:52

“Ionization Energy Trick for Exams | 1st, 2nd, 3rd Ionization Enthalpy | Chemistry Short Class”

Sir-Rai

Shared 6 months ago

54 views

15:47

Bond Energy Explained in 5 Minutes — The Secret Power Inside Every Chemical Bond!

Sir-Rai

Shared 7 months ago

29 views

7:15

Electronegativity SUPER Trick! Students Are Shocked After Learning This 🔥 | Chemistry Easy Method”

Sir-Rai

Shared 7 months ago

63 views

14:35

Why Electron Affinity Changes? The TRUTH No Teacher Ever Told You!

Sir-Rai

Shared 7 months ago

64 views

10:45

Atomic Radius vs Ionic Radius 🔥 Super Easy Trick | Full Concept Clear in Minutes.

Sir-Rai

Shared 7 months ago

44 views

7:36

What Is an Atom? Full Concept in Easiest Way | Discovery of Electron, Proton & Neutron

Sir-Rai

Shared 7 months ago

43 views

4:28

Master All English Tenses in 10 Minutes | Speak English Like a Pro 🔥📚

Sir-Rai

Shared 7 months ago

75 views

14:51

Quantum Numbers Explained in 5 Minutes 🔥 | Energy Levels, Sublevels, Orbitals & Shells Made Easy ⚡”

Sir-Rai

Shared 7 months ago

50 views