General Science
About 6 min · General Awareness · English
Time worked out from the lesson's 408 words at 150 words a minute, plus a minute for each question.
This section tests fundamental concepts from Physics, Chemistry, and Biology at the Class 10 level. The questions are designed to assess your understanding of basic scientific principles, everyday applications, and factual knowledge rather than complex problem-solving.
Key ideas
- Physics focuses on basic laws and phenomena: Newton's laws of motion, work-energy-power relationships, basic electricity concepts (current, voltage, resistance), properties of light (reflection, refraction, dispersion), and everyday applications like why objects float, how levers work, and electromagnetic induction principles.
- Chemistry emphasizes substance properties and reactions: Understand the periodic table organization (groups, periods, metals/non-metals), acid-base concepts including pH scale and neutralization, types of chemical reactions (combination, decomposition, displacement), and common substances like salts, metals, and organic compounds.
- Biology centers on human body systems and life processes: The digestive, circulatory, respiratory, excretory, and nervous systems; basic cell structure and function; photosynthesis and respiration; vitamins and deficiency diseases; blood groups and immunity; and common diseases with their causes.
- Measurement and units: SI units for fundamental quantities (meter, kilogram, second, ampere, kelvin), derived units (newton, joule, watt, pascal), and unit conversions form the foundation for numerical understanding.
- Scientific discoveries and inventions are testable facts: Who discovered/invented what, Nobel Prize winners in science, major scientific milestones, and the scientists associated with fundamental laws and theories.
Watch out for
- Confusing speed and velocity: Speed is scalar (magnitude only); velocity is vector (includes direction). "50 km/h north" is velocity; "50 km/h" is speed.
- Mixing up acid-base indicators: Litmus, phenolphthalein, and methyl orange show different color changes. Remember: blue litmus turns red in acid; phenolphthalein is colorless in acid but pink in base; methyl orange is red in acid, yellow in base.
- Misidentifying disease types: Bacterial (tuberculosis, cholera), viral (polio, AIDS, COVID-19), protozoan (malaria), fungal (ringworm) diseases are distinct. Antibiotics work only on bacterial infections, not viral ones.
Quick reference
- Newton's Three Laws: Inertia; F=ma; Every action has equal opposite reaction
- pH memory: 0–6 acid, 7 neutral, 8–14 base; stomach pH ~2, blood pH ~7.4
- Vaccination: Introduces weakened pathogen to build immunity without causing disease
- Photosynthesis location: Occurs in chloroplasts; chlorophyll is the green pigment
- Human organ systems: 11 major systems including digestive, circulatory, respiratory, nervous
Check yourself: 3 questions
1. Which of the following is the basic unit of life?
2. When a copper vessel is exposed to moist air for a long time, a green coating is formed on its surface. This green substance is:
3. The human heart has how many chambers?
This lesson is cut from the topic's note, not rewritten. Fact-checked on 17 Oct 2026: an AI-assisted check of this note against cited sources; the errors it found were corrected that day. Some errors may remain. The questions are from Shishya's validated question bank.
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