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Welcome to Study Time Pakistan! We provide comprehensive lectures for Class IX, X (Science), XI & XII (per-engineering, per-medical, computer science) students based on the sindh board curriculum. Learn Physics, Chemistry, Maths, and Biology from expert teachers and prepare for board exams with confidence.

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E-Sheet Roll No Fill Procedure 9th & 1st Year Exams | E-Marking Guide | Student Tips 2026

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Shared 56 years ago

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Math Class 11 | Complex Numbers | Exercise 1.1 Question.5

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Shared 56 years ago

159 views

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Geometrical Optics | Unit 13 Mirrors | Concave & Convex Mirror Explained

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121 views

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1st Year Physics Numerical | Calculation of Wave Number of Photon

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Longitudinal vs Transverse Waves | Class 10 Physics Explained

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41K views

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Class 11 Chemistry | Pressure in Gas Molecules Explained Simply

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38K views

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Class 11 Math | Unit Matrix vs Scalar Matrix | Easy Explanation

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10K views

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Class 11 Chemistry | What Is Absolute Temperature? | Kelvin Scale Explained

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301 views

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Avogadro’s Law Explained | Class 11 Chemistry | Gas Laws

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39 views

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Class 11 Maths | Upper vs Lower Triangular Matrix Explained

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35 views

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Class 11 Chemistry | Pressure of Gas Explained in Simple Words

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Difference Between Plane & Spherical Mirror | Class 10 Physics Short

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239 views

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Electron Shells in Bohr’s Model | Class 9 Chemistry Short Explanation

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95 views

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Class 9 Chemistry | Electron Energy Levels in Bohr’s Atomic Model Explained

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111 views

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Class 11 Physics | What is Angle of Repose? | Chapter 3 Dynamics

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69 views

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Potassium Dichromate Properties | Quick Revision for Class 12

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30 views

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Symmetric & Skew Symmetric Matrix | Quick Short for Class 11 Maths

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24 views

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Electromagnetic Spectrum Numerical 5 | Physics Class 10 Chapter 3 Important Problems

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29 views

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Difference Between Heat Capacity & Specific Heat Capacity | Class 12 Physics

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174 views

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Electromagnetic Spectrum Important Numerical 2026 | Physics Class 10 Chapter 3

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49 views

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Class 11 Chemistry | SI Units of Pressure Explained in 40 Seconds

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29 views

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Row Matrix vs Column Matrix | Class 11 Maths | Types of Matrices Explained

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35 views

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Limitations of Neil Bohr’s Atomic Model | Class 9 Chemistry

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115 views

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Class 11 Maths | What is a Diagonal Matrix? | Easy Explanation

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61 views

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Bohr’s Atomic Model Postulates | Simplify Class 9 Chemistry Short

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69 views

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Class 12 Chemistry | Important Properties of Chromium Explained

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Class 10 Physics | Electromagnetic Spectrum Important Numerical Explained

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37 views

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Upper Triangular Matrix | Easy Method to Find Unknowns | Maths Class 11

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44 views

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Types of Molar Heat Capacity | Class 12 Physics Chapter 16

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Shared 56 years ago

99 views

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1st Law of Thermodynamics Class 12 Physics | PV Graph of Isochoric Process Explained

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7.7K views

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What is Molar Heat Capacity? | Class 12 Chapter 16 Physics Short

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Shared 56 years ago

62 views

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Chapter 3 Important Numerical | Class 9 Physics Quick Solution

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61 views

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Class 12 Physics | Heat Capacity Explained in 84 Seconds

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115 views

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Class 11 Chemistry | What is Negligible Volume of Gas? | Ideal Gas Concept

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186 views

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Class 9 Physics | Important Numerical from Chapter 3 Explained

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12K views

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Types of Gas Molecules | Class 11 Chemistry | Monoatomic, Diatomic & Polyatomic Gases Explained

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215 views

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Class 12 Physics | Efficiency Formula Explained | Second Law of Thermodynamics

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129 views

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Atomic Structure Basics | Finding Electrons, Protons & Neutrons | Class 9 Chemistry

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Shared 56 years ago

179 views

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How a Heat Engine Works? | 2nd Law of Thermodynamics | Class 12 Physics

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147 views

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Isotopes of Hydrogen Class 9 Chemistry | Protium, Deuterium & Tritium Explained

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134 views

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Class 12 Physics | Heat Engine Explained | Second Law of Thermodynamics

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175 views

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Class 9 Chemistry | What Are Isotopes? Easy & Clear Explanation

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126 views

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How to Solve F = ma Numerical | Find Acceleration Class 9 Physics

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159 views

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Elastic Collision Explained | Class 11 Physics | Dynamics Chapter

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73 views

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Class 11 Maths | Find Value in Symmetric Square Matrix | Quick Trick

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40 views

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Isochoric Process Explained | Class 12 Physics | First Law of Thermodynamics

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326 views

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PV Graph of Isobaric Process | First Law of Thermodynamics | Class 12 Physics

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Shared 56 years ago

139 views

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PV Graph of Adiabatic Process | First Law of Thermodynamics | Class 12 Physics

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75 views