CGPSC ACF/FRO study materials
CGPSC ACF/FRO study resources

CGPSC ACF/FRO cheat sheet

CGPSC ACF/FRO · Keep the key ideas within reach.

Quick reference

General Studies (History, Geography, Polity, Economy, Science & Technology, Current Affairs – Chhattisgarh & India)

  • Chhattisgarh was carved out of Madhya Pradesh on 1 November 2000 under the Madhya Pradesh Reorganisation Act, 2000; it is India's 26th state with Raipur as its capital and 33 districts (as of 2023).

  • Key Chhattisgarh history: Kalachuri dynasty ruled from Ratanpur; the Bastar state was founded in the 14th century by Annam Deo; the Bhonsle dynasty of Nagpur controlled much of the region until 1854.

  • Chhattisgarh geography: major rivers are Mahanadi (originates in Sihawa, Dhamtari), Indravati, Shivnath, Hasdeo, and Arpa; the state has three agro-climatic zones – Chhattisgarh Plains, Bastar Plateau, and Northern Hills.

  • Indian polity: Fundamental Rights (Part III, Articles 12–35); Directive Principles (Part IV, Articles 36–51); Fundamental Duties (Article 51A, added by 42nd Amendment 1976).

  • Economy: Chhattisgarh is a leading producer of coal, iron ore, and steel; the state's GSDP is driven by mining, power, and agriculture (rice is the main crop).

  • Science & technology: India's Mars Orbiter Mission (Mangalyaan) launched 5 November 2013; Chandrayaan-3 landed near the lunar south pole on 23 August 2023.

  • Current affairs (Chhattisgarh): the state government's 'Krishak Jeevan Jyoti' scheme and 'Rajiv Gandhi Kisan Nyay Yojana' provide direct income support to farmers; the 'Narva, Garva, Ghurva, Bari' initiative focuses on water, livestock, and nutrition.

  • Current affairs (India): India assumed G20 presidency in 2022–2023; the 2023 G20 New Delhi summit adopted the African Union as a permanent member.

Quick reference

Forestry, Silviculture and Forest Management

  • Silvicultural systems: clear felling, shelterwood, seed tree, selection, and coppice; choice depends on species light requirements, regeneration strategy, and management objectives.

  • Champion and Seth (1968) classified Indian forests into 16 major forest types; Chhattisgarh mainly has tropical dry deciduous, tropical moist deciduous, and tropical thorn forests.

  • Site quality is determined by height-age relationships of dominant trees; site index curves are species-specific.

  • Forest inventory: sample plots (0.1 ha for trees, 1 m² for regeneration) are laid out using stratified random sampling; growing stock is expressed in m³/ha.

  • Rotation is the period between establishment and final felling; it can be physical, silvicultural, financial, or maximum volume rotation.

  • Thinning types: low thinning (from below), crown thinning (from above), selection thinning, and mechanical thinning; thinning improves stand health and growth.

  • Joint Forest Management (JFM) was formalised by the Government of India circular of 1 June 1990; it involves village communities in protection and management in return for a share of produce.

  • Forest cover assessment in India is done biennially by the Forest Survey of India (FSI); the India State of Forest Report (ISFR) 2021 reported forest and tree cover at 24.62% of geographical area.

Quick reference

Wildlife Management

  • Wildlife (Protection) Act, 1972: Schedules I and II give highest protection; Schedule III and IV for other protected species; Schedule V for vermin (now largely omitted); Schedule VI regulates trade in specified plants.

  • National parks are declared under Section 35 of the WPA; sanctuaries under Section 18; conservation reserves and community reserves under Sections 36A and 36C.

  • Project Tiger launched in 1973; Project Elephant in 1992; critical tiger habitats are notified under Section 38V of the WPA.

  • Chhattisgarh has three national parks: Indravati (Bijapur), Kanger Valley (Bastar), and Guru Ghasidas (Sanjay) (Sarguja); Indravati is part of a Project Tiger reserve.

  • Wildlife census techniques: line transect for density, camera traps for individually identifiable species, pugmark and scat surveys for carnivores, and point counts for birds.

  • Human-wildlife conflict mitigation includes physical barriers, early warning systems, compensation schemes, and habitat corridor management.

  • In-situ conservation: protected areas, biosphere reserves, and sacred groves; ex-situ: zoos, botanical gardens, seed banks, and cryopreservation.

Quick reference

Biodiversity and Conservation

  • Biodiversity hotspots in India: the Western Ghats and the Eastern Himalayas (also the Indo-Burma and Sundaland regions include Indian territory).

  • IUCN Red List categories: Extinct (EX), Extinct in the Wild (EW), Critically Endangered (CR), Endangered (EN), Vulnerable (VU), Near Threatened (NT), Least Concern (LC), Data Deficient (DD), Not Evaluated (NE).

  • Convention on Biological Diversity (CBD) opened for signature at the 1992 Rio Earth Summit; the Cartagena Protocol (2000) covers biosafety and the Nagoya Protocol (2010) covers access and benefit sharing.

  • Biological Diversity Act, 2002: establishes the National Biodiversity Authority (NBA), State Biodiversity Boards (SBBs), and Biodiversity Management Committees (BMCs).

  • Aichi Biodiversity Targets (2011–2020) were succeeded by the Kunming-Montreal Global Biodiversity Framework (2022), which aims to protect 30% of land and sea by 2030.

  • Keystone species have disproportionate influence on ecosystem function; flagship species are used to mobilise conservation support; indicator species reflect environmental conditions.

  • In Chhattisgarh, the sal (Shorea robusta) forests of Bastar and Sarguja are biodiversity-rich; the state has important populations of wild buffalo (Bubalus arnee) in Indravati.

Quick reference

Environmental Science

  • Air Quality Index (AQI) in India has six categories: Good (0–50), Satisfactory (51–100), Moderate (101–200), Poor (201–300), Very Poor (301–400), Severe (401–500).

  • Major air pollutants: PM10, PM2.5, NOx, SO2, CO, ozone, and lead; PM2.5 is more hazardous because it penetrates deep into the lungs.

  • Water quality parameters: BOD (biochemical oxygen demand), COD (chemical oxygen demand), DO (dissolved oxygen); high BOD indicates organic pollution.

  • Eutrophication is nutrient enrichment (nitrogen and phosphorus) causing algal blooms and oxygen depletion.

  • Environmental Impact Assessment (EIA) in India is governed by the EIA Notification, 2006 (as amended); projects are categorised as A (central) or B (state).

  • Pollution control: the Water (Prevention and Control of Pollution) Act, 1974, and the Air (Prevention and Control of Pollution) Act, 1981, established CPCB and SPCBs.

  • Solid waste management rules (2016) mandate segregation at source; plastic waste management rules (2016) ban certain single-use plastics from 1 July 2022.

Quick reference

Ecology and Climate Change

  • Ecosystem components: producers, consumers, decomposers, and abiotic factors; energy flows unidirectionally and is lost as heat at each trophic level (10% rule).

  • Biogeochemical cycles: carbon, nitrogen, phosphorus, and water cycles; the nitrogen cycle involves fixation, nitrification, assimilation, ammonification, and denitrification.

  • Ecological succession: primary succession starts on bare substrate; secondary succession follows disturbance; climax community is the stable end stage.

  • Climate change: greenhouse gases include CO2, CH4, N2O, and fluorinated gases; global warming potential (GWP) of CH4 is about 28–34 times that of CO2 over 100 years.

  • International climate governance: UNFCCC (1992), Kyoto Protocol (1997), Paris Agreement (2015) with Nationally Determined Contributions (NDCs).

  • India's climate commitments: achieve net-zero emissions by 2070; reduce emissions intensity of GDP by 45% from 2005 levels by 2030; achieve 50% cumulative electric power installed capacity from non-fossil fuel sources by 2030.

  • Adaptation vs mitigation: adaptation reduces vulnerability to climate impacts; mitigation reduces greenhouse gas emissions or enhances sinks.

  • Chhattisgarh climate: tropical monsoon climate with hot summers, high rainfall (June–September), and mild winters; the state is vulnerable to drought and flood.

Quick reference

Agriculture, Horticulture and Soil Science

  • Major crops of Chhattisgarh: rice (dominant), maize, wheat, gram, soybean, groundnut, and sugarcane; the state is known as the 'rice bowl of India'.

  • Cropping seasons: Kharif (June–October), Rabi (November–March), and Zaid (April–June).

  • Soil types in Chhattisgarh: red and yellow soils (major), laterite, black cotton soil (in some parts), and alluvial soils along river valleys.

  • Soil texture triangle classifies soils by sand, silt, and clay percentages; loam soils are best for most crops.

  • Soil pH affects nutrient availability; most crops prefer pH 6.0–7.5; liming raises pH of acidic soils.

  • Horticulture in Chhattisgarh: mango, guava, banana, papaya, and vegetables; the state has potential for cashew and medicinal plants.

  • Irrigation methods: surface, sprinkler, and drip; drip irrigation saves water and is promoted under the Pradhan Mantri Krishi Sinchayee Yojana (PMKSY).

  • Integrated Nutrient Management (INM) combines organic manure, chemical fertilisers, and biofertilisers to maintain soil health.

Quick reference

Surveying, Engineering and Forest Utilization

  • Chain surveying: used for small, relatively flat areas; principle of chain triangulation; instruments include chain, tape, ranging rods, and cross-staff.

  • Compass surveying: prismatic compass measures bearings; local attraction is detected by comparing fore and back bearings.

  • Levelling: dumpy level, staff, and tripod; reduced level (RL) calculation by height of instrument (HI) or rise and fall method.

  • Contour lines join points of equal elevation; closer contours indicate steeper slopes.

  • Forest engineering: road alignment, culverts, and bridges in forest areas must consider drainage, soil stability, and environmental impact.

  • Timber utilisation: sawing, seasoning, preservation, and grading; important timber species in Chhattisgarh include sal, teak, and bamboo.

  • Non-timber forest products (NTFPs): tendu leaves, mahua, sal seed, honey, and medicinal plants; tendu leaf collection is a major livelihood in Chhattisgarh.

Quick reference

Forest Law, Policy and Administration

  • Indian Forest Act, 1927: classifies forests as reserved, protected, and village forests; empowers state governments to declare reserved forests.

  • Forest Conservation Act, 1980 (now Van (Sanrakshan Evam Samvardhan) Adhiniyam, 1980 as amended in 2023): restricts diversion of forest land for non-forest purposes without central approval.

  • Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act, 2006: recognises individual and community forest rights; Gram Sabha is the authority for initiating claims.

  • Wildlife (Protection) Act, 1972: provides for national parks, sanctuaries, and conservation reserves; the National Board for Wildlife is chaired by the Prime Minister.

  • National Forest Policy, 1988: target of 33% forest and tree cover for the country (60% in hills, 20% in plains).

  • Forest administration in Chhattisgarh: headed by the Principal Chief Conservator of Forests (PCCF); the state has forest divisions and ranges.

  • Compensatory Afforestation Fund Act, 2016: manages CAMPA funds for afforestation and conservation.

Quick reference

Botany and Zoology (Plant and Animal Sciences)

  • Plant taxonomy: binomial nomenclature by Carolus Linnaeus; taxonomic hierarchy – Kingdom, Phylum/Division, Class, Order, Family, Genus, Species.

  • Photosynthesis: light reactions in thylakoid membranes produce ATP and NADPH; Calvin cycle fixes CO2; C4 plants have Kranz anatomy and higher efficiency in hot climates.

  • Plant hormones: auxins (cell elongation), gibberellins (stem elongation), cytokinins (cell division), abscisic acid (stress/dormancy), ethylene (ripening).

  • Animal classification: vertebrates – Pisces, Amphibia, Reptilia, Aves, Mammalia; mammals have mammary glands and hair.

  • Animal behaviour: innate vs learned behaviour; imprinting, conditioning, and social behaviour in primates and elephants.

  • Biodiversity of Chhattisgarh: sal forests, bamboo, teak; fauna includes tiger, leopard, wild buffalo, sloth bear, and hill myna (state bird).

  • Plant anatomy: xylem transports water and minerals; phloem transports sugars; stomata regulate gas exchange and transpiration.

Quick reference

General Aptitude, Reasoning and Mental Ability

  • Percentage change: new value = original × (1 ± rate/100); successive percentage changes are not additive.

  • Ratio and proportion: if a:b = c:d, then ad = bc; compound ratio of a:b and c:d is ac:bd.

  • Average = sum of observations / number of observations; weighted average = Σ(w_i x_i)/Σw_i.

  • Time and work: if A can do a job in x days and B in y days, together they take xy/(x+y) days.

  • Number series: check differences, ratios, squares, cubes, and alternating patterns; for alphabet series, note positions (A=1, Z=26).

  • Blood relations: draw a family tree; use symbols for male (□), female (○), and relationships (- for siblings, | for parent-child).

  • Coding-decoding: identify shift patterns (e.g., +1, +2), letter reversals, or substitution rules.

  • Direction sense: use a compass diagram; net displacement is the straight-line distance from start to end.

Quick reference

Hindi and English Language

  • Hindi grammar: संज्ञा (noun), सर्वनाम (pronoun), विशेषण (adjective), क्रिया (verb), क्रियाविशेषण (adverb); लिंग (gender), वचन (number), कारक (case).

  • Hindi sentence structure: subject-object-verb (SOV); English is subject-verb-object (SVO).

  • Common Hindi idioms: 'अंधे की लाठी' (support of the helpless), 'नौ दो ग्यारह होना' (to run away), 'आँख का तारा' (very dear).

  • English grammar: parts of speech; tenses (present, past, future); active and passive voice; direct and indirect speech.

  • English vocabulary: synonyms, antonyms, one-word substitutions, idioms and phrases, and phrasal verbs.

  • Comprehension: identify main idea, supporting details, inference, and tone; eliminate options that are too broad or too narrow.

  • Translation: translate meaning, not words; pay attention to cultural context and idiomatic expressions.