Science and Technology notes for Lok Sewa: everyday physics, chemistry and biology, human health and diseases, environment and climate change, energy, space and new technology. These questions appear in General Knowledge papers at every level. Notes keep each idea short and clear, with the facts that are asked most often, and end with practice questions.
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Nayab Subba Paper I unit 1.9.1: meaning and components of an ecosystem, its types, food chain and food web, the 10 percent law of energy flow, and the water, carbon, nitrogen, oxygen and phosphorus cycles.
Nayab Subba Paper I units 1.8.2–1.8.3: Darwin and Lamarck on evolution, Mendel and heredity, DNA and chromosomes, biotechnology and its uses, and alternative energy in Nepal.
Nayab Subba Paper I unit 1.8.4: how soap and detergent work, types of plastic, natural and synthetic fibres, glass, chemical and organic fertilisers, and pesticides, with their uses and harms.
Cell discovery and organelles, plant vs animal cell, photosynthesis, plant hormones, five kingdoms and plant groups for Lok Sewa General Science, with a 20-question quiz.
Kharidar Paper I unit 4.3: ecology, biodiversity, sustainable development (SDGs), climate change agreements, environment management, urbanisation, settlement and migration.
Kharidar Paper I unit 4.2: nutrients, vitamins, deficiency diseases, communicable and non-communicable diseases, vectors, immunisation and public health facts.
Kharidar Paper I unit 4.1: major scientific inventions and discoveries that changed human life, plus recent scientific activities, with a quiz.
Questions on the Sun, planets, the Moon, eclipses and space missions appear regularly in the general science part of Lok Sewa papers, and Nepal’s own satellite is a favourite current-affairs question. This note explains the solar system step by step, compares the eight planets in a table, explains phases and eclipses, and lists the space missions and firsts that examiners ask about most.
Electricity runs our homes, offices and hydropower projects, so Lok Sewa science questions often ask about current, Ohm’s law, circuits, electric power, fuses, magnets and the units used to measure them. This note explains each idea in simple words with formulas, tables and examples, and lists the scientists and instruments that are asked again and again.
Easy exam notes on matter, mixtures, atomic structure, acids, bases, salts and pH, indicators, metals and non-metals, common chemical names and formulas, rusting and important gases, with a full quiz at the end.
