Lesson 4.5: General Science

Introduction:
General Science is an important section in SSC exams. It includes Physics, Chemistry, and Biology basics, along with scientific facts relevant for competitive exams.

1. Physics Basics

• Motion & Force: Newton’s Laws, Gravity, Friction

• Work, Energy & Power: Work = Force × Distance, Kinetic & Potential Energy

• Light & Sound: Reflection, Refraction, Speed of Light, Human Ear, Sound waves

• Electricity & Magnetism: Ohm’s Law, Circuits, Magnets, Electromagnetism

2. Chemistry Basics

• Matter: Elements, Compounds, Mixtures

• Acids, Bases & Salts: pH, Common acids & bases

• Chemical Reactions: Combustion, Oxidation, Neutralization

• Periodic Table: Groups, Periods, Metals & Non-metals

3. Biology Basics

• Human Body: Digestive, Respiratory, Circulatory, Nervous systems

• Plant Biology: Photosynthesis, Plant Parts, Reproduction

• Genetics: DNA, Heredity, Basic Mendel’s Laws

• Diseases & Immunity: Common diseases, Vaccination

4. SSC Tips

• Focus on fundamental principles rather than deep theory.

• Learn important formulas and units in Physics & Chemistry.

• Memorize human body facts, biological processes, and common diseases.

5. Practice Questions

1. State Newton’s second law of motion.

2. Name two acids and two bases commonly used.

3. Which gas is essential for photosynthesis?

4. What is the function of red blood cells?

5. What is Ohm’s Law?