APPSC Group-I Prelims 1987
145 questions from the 1987 papers, each with the official answer and an explanation.
A question repeated across years is listed once, under one of the years it appeared.
- Q81Population, settlement and human geography
Which of the following series is correct regarding the population density of states in India?
- aKerala, West Bengal, Bihar, Orissa
- bKerala, Uttar Pradesh, Bihar and West Bengal
- cKerala, West Bengal, Bihar, Tamil Nadu
- dKerala, Bihar, Uttar Pradesh, Tamil NaduAnswer
Official answer shown. The explanation is under review.
- Q82Population, settlement and human geography
Which is the state in India with the highest percentage of rural population?
- aUttar PradeshAnswer
- bAndhra Pradesh
- cPunjab
- dHaryana
Explanation
Option A is correct because among the given options, Uttar Pradesh has the highest rural population share at 77.73 percent according to Census 2011. Uttar Pradesh: 77.73% rural population Haryana: 65.12% rural population Andhra Pradesh (undivided): 66.51% rural population Punjab: 62.52% rural population Option B: Andhra Pradesh has a rural population percentage of around 66.51%, which is lower than Uttar Pradesh. Option C: Punjab has a rural population share of 62.52%, reflecting a higher urbanization rate than Uttar Pradesh. Option D: Haryana has a rural population share of 65.12%, which is well below that of Uttar Pradesh.
- Q83India state by state: capitals, districts and where places are
The place where Sardar Khan Mosque is located
- aMadras
- bKadapaAnswer
- cPattarghand
- dLondon
Explanation
Option B is correct because the historical Sardar Khan Mosque is located in the old town area of Kadapa in Andhra Pradesh, built during the regional Nawabi era. Option A: Madras is home to monuments like the Thousand Lights Mosque and Wallajah Mosque, not the Sardar Khan Mosque. Option C: Pattarghand is an irrelevant location name with no connection to this regional historic monument. Option D: London is the capital of the United Kingdom and entirely unconnected to Islamic architecture of the Deccan.
- Q84Climate change: policy and response
Scientists believe that the ozone layer in the atmosphere is being destroyed by this.
- aSO₂
- bCO₂
- cPeroxyacetyl nitrates
- dChlorofluorocarbonsAnswer
Explanation
Option D is correct because chlorofluorocarbons (CFCs) are stable synthetic compounds that diffuse into the stratosphere, where ultraviolet radiation breaks them apart to release reactive chlorine radicals that destroy ozone molecules. Option A: SO₂ (sulfur dioxide) is an acid rain precursor and tropospheric pollutant, not the primary substance causing stratospheric ozone destruction. Option B: CO₂ (carbon dioxide) acts as a primary greenhouse gas responsible for climate change, not a catalyst for stratospheric ozone layer depletion. Option C: Peroxyacetyl nitrates are components of photochemical smog restricted to the lower troposphere.
- Q85Climate change: policy and response
Those that absorb or filter the ultraviolet light radiation coming from the sun, preventing it from harming the Earth's surface, are
- aGreen plants
- bClouds
- cOzone layer in the atmosphereAnswer
- dCarbon dioxide and nitrogen in the atmosphere
Explanation
Option C is correct because the ozone layer in the stratosphere absorbs high-energy ultraviolet radiation emitted by the Sun, preventing it from reaching the surface where it could cause skin cancers, cataracts, and genetic damage to living organisms. Option A: Green plants absorb visible light wavelengths for photosynthesis rather than functioning as an atmospheric shield against solar ultraviolet radiation. Option B: Clouds scatter and reflect shortwave and longwave radiation across the spectrum, but do not provide selective absorption of harmful ultraviolet bands. Option D: Carbon dioxide and nitrogen in the atmosphere absorb infrared and vacuum ultraviolet radiation respectively, leaving the harmful UV-B band unabsorbed.
- Q86Waste management
Agricultural waste materials like sugarcane bagasse, groundnut shells, pulps, and sawdust are easily decomposed and are being used as a substitute for wood in house construction. Specifically, for which of the following are they useful?
- aBeams
- bPillars
- cDoorsAnswer
- dDoor frames
Explanation
Option C is correct because agro-waste materials such as bagasse, groundnut shells, and sawdust are compressed with resins into particleboards, medium-density fibreboards, and flush door shutters, making them an established wood substitute for non-load-bearing components like door panels and doors. Option A: Beams are primary load-bearing horizontal structural members requiring high tensile and flexural strength, which decomposed agro-waste composite boards cannot safely provide. Option B: Pillars are primary vertical load-bearing columns that support the weight of the entire superstructure, requiring reinforced concrete, steel, or stone rather than bio-waste boards. Option D: Door frames require high structural rigidity and screw-holding capacity to hang and anchor heavy shutters securely to masonry, for which solid timber, steel, or concrete are typically preferred over basic agro-residue composite panels.
- Q87Science, technology and society
The field in which Ramanujan made fundamental contributions.
- aDifferential Calculus
- bQuantum Mechanics
- cTheory of NumbersAnswer
- dTopology
Explanation
Option C is correct because Srinivasa Ramanujan made seminal, highly original contributions to number theory, notably in the partition function, mock theta functions, modular forms, and Ramanujan primes. Option A: was developed independently by Isaac Newton and Gottfried Wilhelm Leibniz and was not the primary domain of Ramanujan's research. Option B: is a branch of theoretical physics dealing with subatomic phenomena, which Ramanujan did not work on. Option D: is a branch of geometry concerned with properties preserved under continuous deformations, founded largely by European mathematicians like Henri Poincare.
- Q88Defence technology
Manufacturing of Silkworm missiles
- aIn Brazil
- bIn ChinaAnswer
- cIn Israel
- dIn Sweden
Explanation
Option B is correct because the Silkworm is the NATO reporting name for the Chinese Shang You (SY) and Hai Ying (HY) series of anti-ship cruise missiles manufactured in China. Option A: Brazil produces the Mansup and AV-TM 300, not the Silkworm. Option C: Israel produces missiles like Gabriel, not Silkworm. Option D: Sweden produces missiles such as the RBS-15 series, not Silkworm.
- Q89Information and communication technology
What is CrayXMP-14 the name of?
- aA nuclear power plant designed in the United States of America
- bA fighter jet designed in the United States of America
- cA supercomputer designed in the United States of AmericaAnswer
- dAn American satellite
Explanation
Option C is correct because the Cray X-MP/14 was a model of the Cray X-MP series, a family of vector supercomputers designed and manufactured by the American firm Cray Research in the 1980s. Option A: A nuclear power plant designed in the United States of America is incorrect because Cray is a renowned supercomputing manufacturer, not a nuclear power reactor design. Option B: A fighter jet designed in the United States of America confuses supercomputer model designations with military aircraft naming schemes. Option D: An American satellite is incorrect as Cray systems are terrestrial mainframe and supercomputing platforms.
- Q90SCHOOL BIOLOGY: life sciences as the papers actually ask them
The three essential elements for plants supplied through fertilizers.
- aZinc, Potassium, Phosphorus
- bPotassium, Nitrogen, PhosphorusAnswer
- cNitrogen, Carbon, Potassium
- dPotassium, Phosphorus, Carbon
Explanation
Option B is correct because nitrogen, phosphorus, and potassium (NPK) are the three primary mineral macronutrients that plants require in large amounts and are commonly supplied through chemical fertilizers. Option A: Zinc is an essential micronutrient needed only in trace amounts rather than a primary fertilizer element. Option C: Carbon is absorbed by plants directly from atmospheric carbon dioxide, not supplied through fertilizers. Option D: Carbon is a non-mineral element derived from air and water rather than fertilizer applications.
- Q91SCHOOL BIOLOGY: life sciences as the papers actually ask them
Which crops should be grown to increase nitrogen in the soil?
- aPaddy
- bBeansAnswer
- cWheat
- dCotton
Explanation
Option B is correct because beans are leguminous plants that form root nodules housing nitrogen-fixing Rhizobium bacteria, which enrich soil nitrogen. Option A: Paddy is a cereal crop that absorbs and exhausts nitrogen from the soil rather than fixing it through root nodules. Option C: Wheat is a graminaceous crop that consumes available soil nitrogen without biological nitrogen-fixing nodule systems. Option D: Cotton is a cash crop with high nutrient demand that depletes soil nitrogen reserves.
- Q92SCHOOL BIOLOGY: life sciences as the papers actually ask them
Hereditary and acquired variation is called by this name
- aMutationAnswer
- bHybridizations
- cPermanent variations
- dRacial hybridizations
Explanation
Option A is correct because mutations introduce discontinuous and inheritable alterations in genetic material that produce hereditary variations distinguishing individuals within a species. Option B: Hybridizations refer to the breeding process between genetically distinct parents to produce offspring, not a term for variations. Option C: Permanent variations is an informal descriptive phrase rather than the standard biological term for genetic alterations. Option D: Racial hybridizations refer to interbreeding between distinct racial groups rather than the biological mechanism of variation.
- Q93SCHOOL BIOLOGY: life sciences as the papers actually ask them
Gene means
- aDNAAnswer
- bAmino acid in protein
- cThe linkage group
- dA part of RNA
Explanation
Option A is correct because a gene is a distinct, functional segment of DNA that contains the instructions to produce a specific functional product, typically a protein. Option B: Amino acids are the monomer units that form proteins, not the genetic units themselves. Option C: A linkage group refers to a set of genes located on the same chromosome that tend to be inherited together. Option D: In cellular organisms, genes are structural segments of DNA, though they transcribe messenger RNA to direct protein synthesis.
- Q94SCHOOL BIOLOGY: life sciences as the papers actually ask them
Which organism has colorless blood?
- aCockroachAnswer
- bEarthworm
- cAnt
- dHoneybees
Explanation
Option A is correct because the cockroach possesses an open circulatory system with hemolymph that lacks respiratory pigments like hemoglobin, making its blood colorless. Option B: Earthworm is incorrect because its blood contains hemoglobin dissolved directly in the plasma, giving it a red color. Option C: Ant is incorrect because standard zoological classification distinguishes the cockroach as the classical example of colorless hemolymph lacking respiratory pigments. Option D: Honeybees is incorrect because their hemolymph contains various pigments and proteins giving it a yellowish or pale amber tint rather than the classical colorless blood of the cockroach.
- Q95HUMAN BODY, NUTRITION AND DISEASE
The metal present in hemoglobin.
- aMagnesium
- bIronAnswer
- cCobalt
- dManganese
Explanation
Option B is correct because iron in the ferrous state is the central metal ion of the heme groups in hemoglobin, enabling it to bind and transport oxygen through the bloodstream. Option A: Magnesium is the central metal constituent of chlorophyll rather than hemoglobin. Option C: Cobalt forms the core metal component of vitamin B12 (cobalamin). Option D: Manganese serves as an enzyme cofactor in various metabolic pathways, not as a structural part of hemoglobin.
- Q96HUMAN BODY, NUTRITION AND DISEASE
The disease caused by Thiamine-A vitamin deficiency
- aAnemia
- bBeriberiAnswer
- cScurvy or Sanja
- dPellagra
Explanation
Option B is correct because beriberi is the clinical condition caused by a chronic deficiency of thiamine (vitamin B1), leading to cardiovascular and nervous system complications. Option A: Anemia is caused primarily by a deficiency of iron, folate, or vitamin B12, not thiamine. Option C: Scurvy is caused by a deficiency of vitamin C (ascorbic acid). Option D: Pellagra is caused by a deficiency of niacin (vitamin B3).
- Q97HUMAN BODY, NUTRITION AND DISEASE
Which of the following vitamins is necessary to prevent the risk resulting from anemia?
- aB₁
- bB₂
- cB₃Answer
- dB₄
Official answer shown. The explanation is under review.
- Q98HUMAN BODY, NUTRITION AND DISEASE
Which contains the highest amount of protein?
- aCotton
- bSoybeanAnswer
- cRice
- dWheat
Explanation
Option B is correct because soybean is a legume that contains approximately 36 to 40 grams of protein per 100 grams, which is significantly higher than cereal grains and fiber crops. Cotton: non-food fiber crop with negligible direct dietary protein compared to edible food sources Soybean: approximately 36 to 40 percent protein Wheat: approximately 11 to 13 percent protein Rice: approximately 6 to 8 percent protein Option A: Cotton is an industrial fiber crop whose raw form is not an edible dietary protein source. Option C: Rice consists primarily of carbohydrates and contains only about 6 to 8 percent protein. Option D: Wheat contains about 11 to 13 percent protein, which is far lower than the protein content of soybean.
- Q99HUMAN BODY, NUTRITION AND DISEASE
Fat-soluble vitamins
- aA, B, C, D
- bD, E, K
- cA, D, E, KAnswer
- dA, B, E, K
Explanation
Option C is correct because vitamins A, D, E, and K dissolve in dietary lipids, are absorbed via micelles in the small intestine, and are stored in the liver and fatty tissues. Fat-soluble vitamins: A, D, E, K Water-soluble vitamins: B complex and C Option A: includes Vitamin B and Vitamin C, which are water-soluble vitamins. Option B: fails to include Vitamin A, which is also a fat-soluble vitamin. Option D: includes Vitamin B, which dissolves in water and cannot be stored like fat-soluble vitamins.
- Q100HUMAN BODY, NUTRITION AND DISEASE
This is a sex-linked disease
- aXerophthalmia
- bMarfan syndrome
- cHemophiliaAnswer
- dAIDS
Explanation
Option C is correct because hemophilia is a well-known X-linked recessive genetic disorder characterized by an impairment in the body's ability to produce specific blood clotting factors. Option A: Xerophthalmia is a progressive nutritional deficiency disease caused by a severe lack of vitamin A. Option B: Marfan syndrome is an autosomal dominant connective tissue disorder caused by mutations in the FBN1 gene on chromosome 15, not a sex-linked condition. Option D: AIDS is an acquired infectious immunodeficiency disease caused by human immunodeficiency virus (HIV), not a genetic or sex-linked disorder.
- Q101HUMAN BODY, NUTRITION AND DISEASE
The cause of the disease Athlete's foot is
- aBacteria
- bFungiAnswer
- cVirus
- dAlgae
Explanation
Option B is correct because athlete foot, medically termed tinea pedis, is a contagious cutaneous infection caused by dermatophytic fungi such as Trichophyton. Option A: Bacteria can cause secondary infections in cracked skin, but they are not the primary causative agent of athlete foot. Option C: Virus does not cause athlete foot; viral skin conditions include warts and herpes simplex. Option D: Algae are photosynthetic organisms that rarely cause human infection and do not cause tinea pedis.
- Q102HUMAN BODY, NUTRITION AND DISEASE
That which passes through the HIJ virus
- aOilAnswer
- bMovable gas
- cUnderground gas
- dNone of these
Explanation coming soon.
- Q103SCHOOL CHEMISTRY
The chemical substance commonly found in rat poison.
- aPotassium cyanide
- bSodium nitrate
- cAmmonia
- dZinc phosphideAnswer
Explanation
Option D is correct because zinc phosphide is a common rodenticide that reacts with stomach acids in rodents to release lethal phosphine gas into the bloodstream. Option A: Potassium cyanide is a fast-acting poison but is too hazardous to humans for standard commercial rat bait formulations. Option B: Sodium nitrate is an agricultural fertilizer and meat preservative with no rodenticidal action. Option C: Ammonia is a gaseous household cleaner and industrial chemical, not a rodent poison.
- Q104SCHOOL CHEMISTRY
The poisonous gas used in the production of carbonate pesticides.
- aChlorine
- bHydrogen fluoride
- cHydrogen sulfide
- dMethyl isocyanateAnswer
Explanation
Option D is correct because methyl isocyanate is an extremely toxic intermediate gas used in the synthesis of carbamate-based insecticides such as carbaryl. Option A: Chlorine is an elemental halogen used for bleaching and disinfection, not specifically in manufacturing carbamate pesticides. Option B: Hydrogen fluoride is mainly utilized in the etching of glass and in the synthesis of fluorocarbons. Option C: Hydrogen sulfide is a toxic byproduct of decaying organic matter and petroleum refining, not a reagent for carbamate production.
- Q105SCHOOL CHEMISTRY
The main component of Biogas.
- aMethaneAnswer
- bEthane
- cButane
- dAcetylene
Explanation
Option A is correct because biogas is produced by the anaerobic digestion of organic matter, where methane forms the primary combustible constituent, typically comprising 50 to 75 percent of the gas mixture. Option B: Ethane is a minor component found in natural gas rather than the chief product of anaerobic biogas generation. Option C: Butane is the principal component of liquefied petroleum gas, not biogas. Option D: Acetylene is an industrial fuel gas synthesized chemically, not produced by biological waste breakdown.
- Q106SCHOOL CHEMISTRY
Which of the following polymers is used as a coating for electrical wires in homes?
- aBakelite
- bPolyvinyl chlorideAnswer
- cPolyethylene
- dPolypropylene
Explanation
Option B is correct because polyvinyl chloride (PVC) is a tough, flame-retardant polymer with high electrical resistivity, making it the standard insulating and protective coating material for domestic electrical wiring. Option A: Bakelite is a hard, brittle thermosetting polymer used mainly for electrical switches and plug tops, not flexible wire coatings. Option C: Polyethylene is used predominantly in plastic bags, bottles, and films rather than standard household indoor wire insulation. Option D: Polypropylene is mainly used in packaging, textiles, and automotive parts.
- Q107SCHOOL PHYSICS
The scientist who proposed the principles of flotation
- aPascal
- bRaman
- cArchimedesAnswer
- dNewton
Explanation
Option C is correct because Archimedes formulated the principle of buoyancy and the law of flotation, which states that a floating object displaces a weight of liquid equal to its own weight. Option A: Pascal formulated the law governing the transmission of fluid pressure in enclosed fluids, not flotation. Option B: Raman discovered the inelastic scattering of photons in matter, not the laws of floating bodies. Option D: Newton formulated the laws of motion and universal gravitation, not the laws of flotation.
- Q108SCHOOL PHYSICS
The famous 'Raman Effect' is related to this
- aElectromagnetic
- bGravitation
- cAstronomy or Stellar Science
- dScattering of lightAnswer
Explanation
Option D is correct because the Raman Effect is the inelastic scattering of light photons by matter, leading to a shift in the wavelength of the scattered light. Option A: While light is electromagnetic in nature, the Raman Effect refers specifically to inelastic scattering rather than general electromagnetic phenomena. Option B: Gravitation governs mass attraction and plays no role in Raman scattering. Option C: Stellar science deals with the study of celestial bodies rather than molecular photon scattering.
- Q109SCHOOL PHYSICS
The electromagnetic radiation with the highest energy that can penetrate matter.
- aInfra-red
- bMicrowaves
- cVisible light
- dX-radiationAnswer
Explanation
Option D is correct because X-radiation has the shortest wavelength and highest frequency among the listed options, giving its photons the highest energy and deepest penetration through matter. Option A: Infra-red radiation has longer wavelengths and far lower photon energy, meaning it is readily absorbed as heat at surface layers. Option B: Microwaves have very low photon energy and cannot penetrate dense materials like high-energy ionizing radiation does. Option C: Visible light has lower frequency and energy than X-rays, causing it to be absorbed or reflected by opaque matter.
- Q110SCHOOL PHYSICS
Identify the incorrect statement among the following.
- aLight travels faster than sound.
- bQuartz is better than glass in transmitting light.
- cUltraviolet light is more energetic than X-rays.Answer
- dThe visible light spectrum contains red and violet colors.
Explanation
Option C is correct because the statement is incorrect; X-rays have a much shorter wavelength and higher frequency than ultraviolet light, giving X-rays significantly higher photon energy. Option A: This statement is factually correct because light travels at about 300,000 km/s, whereas sound travels at only about 343 m/s in air. Option B: This statement is factually correct because fused quartz has higher optical transmission and absorbs less light than common silicate glass. Option D: This statement is factually correct because the visible spectrum spans from violet at roughly 400 nm to red at roughly 700 nm.
- Q111SCHOOL PHYSICS
Among the following, the element that is not radioactive.
- aPoloniumAnswer
- bRadium
- cThorium
- dUranium
Explanation coming soon.
- Q112Logical reasoning and analytical ability
All men are animals, no women are men, therefore
- aNo women are animals
- bNo men are womenAnswer
- cSome women are animals
- dSome women may be men
Explanation
Option B is correct because the premise 'no women are men' directly converts to 'no men are women' by simple conversion of an E-type proposition. Option A: This commits an illicit major since the term 'animals' is undistributed in the premise but distributed in this negative conclusion. Option C: There is no necessary overlap established between women and animals; women could be entirely separate from animals. Option D: This directly contradicts the explicit premise that 'no women are men'.
- Q113Logical reasoning and analytical ability
All employees are graduates, some employees are women?
- aAll women are graduates
- bNo women are graduates
- cSome women are graduatesAnswer
- dGraduate women are employees
Explanation
Option C is correct because the women who are employees must also be graduates, since every employee is a graduate. Option A: We only know about women who are employees; there may be other women who are not graduates. Option B: This contradicts the premise, as the subset of women who are employees are definitely graduates. Option D: The premises state that some employees are women, but not all graduate women are necessarily employees.
- Q114Series, analogy and odd man out
____ to 8795, 6645 to ____, 4385 to ____
- a8800, 6650, 4390Answer
- b8900, 600, 4300
- c8685, 6565, 4285
- d8995, 6945, 4755
Explanation coming soon.
- Q115Series, analogy and odd man out
Among the 5 words given below, one is not related to the other four. Which is that word? Courageous, Honest, Happy, Wicked, Deceitful
- aHonest
- bHappyAnswer
- cWicked
- dDeceitful
Explanation
Option B is correct because Happy denotes a transient emotional state or mood, whereas the other four words denote enduring moral or character traits. Option A: Honest describes a moral character trait rather than a temporary emotional state. Option C: Wicked describes an inherent ethical quality or character flaw rather than an emotion. Option D: Deceitful denotes an aspect of moral character and conduct rather than a feeling.
- Q116Series, analogy and odd man out
Among the 5 words given below, which word is related to the other four? Love, Dislike, Appreciation, Help, Hatred
- aHatred
- bDislike
- cAppreciation
- dHelpAnswer
Explanation
Option D is correct because Help is an action or behavior, whereas Love, Dislike, Appreciation, and Hatred are all emotions or feelings, and helping is typically an expression or consequence related to these feelings. Option A: Hatred is purely an emotional feeling, fitting the common group of internal emotional states. Option B: Dislike is an emotion or sentiment, belonging to the category of internal feelings. Option C: Appreciation is an emotional attitude or feeling, rather than an overt physical action.
- Q117Series, analogy and odd man out
Among the following, which is different from the other four?
- aN
- bEAnswer
- cA
- dF
Explanation
Option B is correct because the letter E is constructed using 4 straight line segments, whereas N, A, and F are each constructed using exactly 3 straight line segments. N is formed using 3 straight lines A is formed using 3 straight lines F is formed using 3 straight lines E is formed using 4 straight lines Option A: N requires exactly 3 straight lines to draw. Option C: A requires exactly 3 straight lines to draw. Option D: F requires exactly 3 straight lines to draw.
- Q118Series, analogy and odd man out
As ______ is related to top, so roots are related to ______.
- aPeak ; bottom
- bRoof ; bottom
- cPeak ; foundationAnswer
- dRoof ; foot
Official answer shown. The explanation is under review.
- Q119Series, analogy and odd man out
The relationship of 8 to ____, and the relationship of 16 to ____ is the same.
- a64, 256Answer
- b40, 96
- c128, 144
- d56, 128
Explanation
Option A is correct because each number is paired with its square, establishing the same mathematical relationship in both pairs. 8 squared = 64 16 squared = 256 Option B: 40 is 8 multiplied by 5, whereas 96 is 16 multiplied by 6, which lacks a uniform multiplier or relationship. Option C: 128 is 8 multiplied by 16, whereas 144 is 16 multiplied by 9, showing unequal proportions. Option D: 56 is 8 multiplied by 7, whereas 128 is 16 multiplied by 8, yielding inconsistent ratios.
- Q120Series, analogy and odd man out
For man ____, for bird ____, for boy ____
- afarsightedness, bad smell, instinct
- bleg, wing, tail
- cland, sky, waterAnswer
- dcloth, feather, fluff
Official answer shown. The explanation is under review.
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