Question 1

Find the odd kitchen action (heat cooking vs preparation): Choose the option that is not a heat-based cooking method.

Accepted Answer

Introduction / Context: Culinary processes can be divided into heat-based cooking methods and non-thermal preparation steps. Identifying the non-thermal action provides a crisp criterion for odd-one-out classification. Given Data / Assumptions: Bake: dry-heat cooking, usually in an oven. Fry: cooking in hot fat or oil. Roast: dry-heat cooking, often in an oven or over fire. Peel: preparation step removing outer skin; no heat applied. Concept / Approach: Group by thermal involvement. Bake, fry, and roast are thermal cooking methods; peel is a preparatory technique without heat. Step-by-Step Solution: 1) Mark heat methods: Bake, Fry, Roast.2) Identify non-thermal prep: Peel.3) Peel is the odd item. Verification / Alternative check: Kitchen workflow: peeling typically precedes cooking and does not alter food by heat. Why Other Options Are Wrong: They are all methods that raise food temperature to cook. Common Pitfalls: Do not confuse roasting nuts where skins split due to heat with the act of peeling itself. Final Answer: Peel

Question 2

Find the odd sport (outdoor field team sport vs indoor cue sport): Select the option that is not typically played as an outdoor field team ball sport.

Accepted Answer

Introduction / Context: Sports can be classified by venue, equipment, and team format. Outdoor field team ball sports contrast clearly with indoor cue sports. This environmental and equipment distinction yields an objective odd-one-out. Given Data / Assumptions: Cricket: outdoor field team sport with bat and ball. Baseball: outdoor field team sport with bat and ball. Football: outdoor field team ball sport on grass or turf. Billiards: indoor cue sport on a felt-covered table using cues and balls. Concept / Approach: Group by typical venue and apparatus. Three are outdoor team sports on large fields; one is an indoor precision cue sport. Step-by-Step Solution: 1) Mark outdoor field team ball sports: Cricket, Baseball, Football.2) Identify the indoor cue sport: Billiards.3) Billiards is the odd item. Verification / Alternative check: Team size and scoring structure differ fundamentally; billiards is typically individual or doubles on a table, not a field. Why Other Options Are Wrong: They share outdoor fields, larger teams, and running play. Common Pitfalls: Do not confuse indoor arenas for football variants with the standard codes meant here. Final Answer: Billiards

Question 3

Find the odd word (orthography pattern): Choose the option that does not start with the Ge- or Gi- sound and letter pattern.

Accepted Answer

Introduction / Context: Lexical classification may use orthographic onset patterns. Three options begin with the same letter sequence and closely related phonetic onset, while one begins with a different letter and sound, making it an objective odd-one-out based on spelling and pronunciation. Given Data / Assumptions: Genius: starts with Ge-. Geyser: starts with Ge-. Gesture: starts with Ge-. Revenge: starts with Re-, not Ge-. Concept / Approach: Group by initial orthographic cluster. Items sharing Ge- are grouped; the item with a different onset cluster is separated. Step-by-Step Solution: 1) Identify common onset: Genius, Geyser, Gesture → Ge-.2) Identify the outlier onset: Revenge → Re-.3) Therefore, Revenge is the odd item. Verification / Alternative check: Phonetic onset also differs: the three share a hard or soft G with e following; Revenge begins with an R consonant cluster. Why Other Options Are Wrong: They share the same initial letter sequence, satisfying the pattern criterion. Common Pitfalls: Do not switch to semantics; the question tests spelling pattern, not meaning. Final Answer: Revenge

Question 4

Find the odd word (church items vs unrelated term): Pick the option that does not commonly denote a church furnishing or group.

Accepted Answer

Introduction / Context: Semantic fields provide clean grouping. Three words denote items or groups associated with a church setting, while one denotes a personal quality unrelated to church furnishings or roles. Correcting a likely misspelling, Altar (not Alter) is the intended sacred table in a church. Given Data / Assumptions: Pew: bench seating in a church. Altar: sacred table or structure in a church. Choir: organized group of singers in a church service context. Mettle: a person's resilience or spirit; not a church furnishing or group. Concept / Approach: Group tokens by domain relevance to church architecture and liturgy. Three belong to the ecclesiastical domain; one is general abstract vocabulary. Step-by-Step Solution: 1) Mark church-related terms: Pew, Altar, Choir.2) Mark unrelated abstract noun: Mettle.3) Mettle is the odd item. Verification / Alternative check: Attempt to use each in a sentence about church interiors; mettle does not fit as an object or role within the building. Why Other Options Are Wrong: They are standard components or groups in church services or interiors. Common Pitfalls: Do not confuse Alter with Altar; the corrected church term is Altar. Final Answer: Mettle

Question 5

Find the odd term (zodiac sign vs geographic line): Select the option that is not a sign of the zodiac.

Accepted Answer

Introduction / Context: Many vocabulary classification tasks separate astronomical or astrological terms from geographic terms. Zodiac names refer to constellations used in astrology, whereas the Equator is an Earth reference line in geography. The category mismatch provides a clear odd-one-out. Given Data / Assumptions: Scorpio: zodiac sign based on the Scorpius constellation. Cancer: zodiac sign. Capricorn: zodiac sign. Equator: an imaginary line around Earth equidistant from the poles; not a constellation or zodiac sign. Concept / Approach: Group by domain: zodiac signs versus geographic references. Three are astrological; one is geographic. Step-by-Step Solution: 1) Mark zodiac signs: Scorpio, Cancer, Capricorn.2) Identify the geographic term: Equator.3) Equator is the odd item. Verification / Alternative check: Check usage: zodiac signs appear in horoscopes and star charts; the Equator appears in maps and Earth science. Why Other Options Are Wrong: They all belong to the same astrological set. Common Pitfalls: Do not confuse the Tropic of Cancer and Tropic of Capricorn (geographic lines) with the zodiac signs; here, the word Equator is the only pure geographic line listed. Final Answer: Equator

Question 6

Find the odd musical instrument (keyboard vs string family): Pick the option that is not a string instrument.

Accepted Answer

Introduction / Context: Instrument families are typically grouped by the primary sound source. Violin, Guitar, and Sitar are string instruments where vibrating strings produce sound directly, while a Piano is a keyboard instrument with hammered strings and a distinct classification by playing interface and ensemble role. Given Data / Assumptions: Violin: bowed string instrument. Guitar: plucked string instrument. Sitar: plucked string instrument from Indian classical music. Piano: keyboard instrument where hammers strike strings; commonly classified under keyboards in orchestration contexts. Concept / Approach: Although piano contains strings, its primary interface and family in most curricula is the keyboard family, contrasted with hand-played chordophones. Thus it separates cleanly from three hand-played string instruments. Step-by-Step Solution: 1) Tag hand-played strings: Violin, Guitar, Sitar.2) Tag keyboard instrument: Piano.3) Piano is the odd item. Verification / Alternative check: Consider performance practice: piano uses keys and hammers, unlike the direct finger contact with strings in the other three. Why Other Options Are Wrong: They are all directly actuated string instruments without a keyboard interface. Common Pitfalls: Do not confuse internal construction with family classification; the playing interface matters for grouping. Final Answer: Piano

Question 7

Find the odd domestic animal (pet vs livestock): Choose the option that is primarily kept as a companion animal rather than for milk or meat.

Accepted Answer

Introduction / Context: Another stable separator in basic zoological reasoning is human use or role. Livestock are raised for agricultural products such as milk or meat, whereas pets are kept for companionship, security, or herding but not primarily as food production animals. Given Data / Assumptions: Cow: livestock, primarily milk and meat in many regions. Goat: livestock for milk and meat. Camel: livestock and draught animal; milk and transport in arid regions. Dog: primarily a companion, working, or guard animal; not standard livestock for dairy or meat in most contexts. Concept / Approach: Group by agricultural production role. Three options are livestock species commonly raised for milk or meat; dog is primarily companion or working animal. Step-by-Step Solution: 1) Mark livestock: Cow, Goat, Camel.2) Mark companion/working animal: Dog.3) Dog is the odd item. Verification / Alternative check: Check typical farm outputs: milk and meat arise from cow, goat, and camel husbandry; dogs do not provide such outputs in standard agriculture. Why Other Options Are Wrong: They share the livestock production role. Common Pitfalls: Guard or herding roles of dogs do not convert them into livestock; role category is distinct. Final Answer: Dog

Question 8

Find the odd socio-cultural category (tribes vs religion): Select the option that is not an Indian tribal/ethnic group but a major organized religion/community.

Accepted Answer

Introduction / Context: Odd-one-out tasks in general knowledge frequently rely on a single, stable attribute that partitions items into incompatible categories. Here, three entries are well-known indigenous tribal communities of India, usually grouped under the umbrella of Scheduled Tribes or recognized ethnic groups. One entry, however, denotes a large, organized religion/community with its own doctrine, clergy, places of worship, and pan-regional membership. This categorical mismatch cleanly identifies the outlier. Given Data / Assumptions: Bhils: a major tribal community primarily in western/central India (e.g., Rajasthan, Gujarat, Madhya Pradesh). Todas: a pastoral tribal community of the Nilgiri Hills in Tamil Nadu. Nagas: a collective term for several tribal groups in Northeast India (notably Nagaland and adjoining regions). Sikhs: adherents of Sikhism, a monotheistic religion founded in the Punjab region, with global presence and formal religious institutions. Concept / Approach: Classify each option by socio-cultural type. Tribal groups are indigenous, endogamous communities with distinctive languages, customary law, and localized territories. A religion/community like Sikhism transcends tribe/ethnicity, has scripture (Guru Granth Sahib), codified practices, and institutional structures (gurdwaras) spanning regions and nations. The presence of a religion among tribal identifiers yields a 3-vs-1 split. Step-by-Step Solution: 1) Tag Bhils, Todas, Nagas → tribal communities.2) Tag Sikhs → followers of a religion (Sikhism), not a tribe.3) The only non-tribal category is “Sikhs,” hence the odd one out. Verification / Alternative check: Cross-check institutional markers: tribes are classified under ethnographic and constitutional categories; Sikhism is cataloged under religions, with doctrines, rites, and clergy. The domains do not overlap. Why Other Options Are Wrong: Bhils, Todas, and Nagas all denote indigenous tribal identities, aligning with each other and not with an organized religion label. Common Pitfalls: Do not conflate “community” with “tribe.” Many communities exist, but the criterion here is tribal identity vs religion. Final Answer: Sikhs

Question 9

Find the odd sports term (sport vs equipment): Choose the option that names equipment rather than the sport itself.

Accepted Answer

Introduction / Context: Sports vocabulary routinely distinguishes between the name of a sport and the equipment used to play it. In classification items, mixing these two levels (activity vs object) creates a clear odd-one-out. Three options are names of sports; one is a piece of equipment used in a different sport (badminton). Given Data / Assumptions: Cricket: a sport played with bat, ball, and wickets. Hockey: a sport (field/ice variants) played with stick and ball/puck. Tennis: a sport played with racquet and ball on a court. Shuttlecock: cone-shaped projectile used in badminton; it is equipment, not a sport. (Spelled “shuttlecock” as a single word.) Concept / Approach: Group items by semantic type: sport (activity) versus equipment (object). Only one entry denotes equipment; the others denote the sporting discipline itself. This categorical difference is stable and unambiguous. Step-by-Step Solution: 1) Mark sports: Cricket, Hockey, Tennis.2) Mark equipment: Shuttlecock.3) Therefore, “Shuttle Cock” is the odd item. Verification / Alternative check: Attempt to pair each with a verb: one “plays” cricket/hockey/tennis, but one “uses” a shuttlecock to play badminton—confirming the level mismatch. Why Other Options Are Wrong: They all denote full sports rather than an object used within a sport. Common Pitfalls: Do not confuse related sports (badminton vs tennis); focus on the category difference—sport name vs equipment. Final Answer: Shuttle Cock

Question 10

Find the odd household item (liquid container vs support dish): Select the option that is not a vessel designed to hold and pour liquids.

Accepted Answer

Introduction / Context: Everyday utensils can be grouped by primary function. Containers are designed to hold liquids for drinking, storage, or pouring, whereas support dishes are flat pieces meant to hold or catch drips, not to contain fluids. Mixing these functions creates a straightforward odd-one-out scenario. Given Data / Assumptions: Jug: container with a handle/spout for liquids. Pitcher: container for storing/serving liquids. Tumbler: drinking glass designed to hold liquids. Saucer: small, shallow dish used under a cup; not intended as a primary liquid container. Concept / Approach: Classify by purpose: containing vs supporting. Jug, pitcher, and tumbler are vessels to hold liquids directly; saucer supports a cup and catches spills but is not used as a standalone liquid container. Step-by-Step Solution: 1) Mark liquid containers: Jug, Pitcher, Tumbler.2) Mark support dish: Saucer.3) Saucer is the odd item. Verification / Alternative check: Consider anatomy: containers have volume and vertical walls sufficient for liquids; saucers are shallow and functional as supports. Why Other Options Are Wrong: They share the container function and are commonly used to hold and serve liquids. Common Pitfalls: Do not let material (glass/ceramic) distract from functional classification. Final Answer: Saucer

Question 11

Find the odd transport term (vehicle vs goods): Pick the option that denotes merchandise (what is carried) rather than a vehicle (what carries it).

Accepted Answer

Introduction / Context: Transport terminology divides neatly into carriers (vehicles) and what they carry (goods). A list that mixes these levels enables a clean classification: three items are vehicles; one is the load being transported. Identifying the semantic level mismatch reveals the odd item rapidly. Given Data / Assumptions: Van: vehicle for transporting people or goods. Truck: motor vehicle for carrying heavy goods. Trolley (spelled “trolley”): wheeled vehicle/platform for carrying loads. Cargo: goods/freight transported by vehicle/ship/aircraft; not a vehicle. Concept / Approach: Group by role in the transport system. Van, truck, and trolley are means of conveyance; cargo is the commodity being conveyed. The category difference is fundamental and unambiguous. Step-by-Step Solution: 1) Mark vehicles: Van, Truck, Trolley.2) Mark goods: Cargo.3) The only non-vehicle is Cargo → odd one out. Verification / Alternative check: Use sentence frames: “drive/operate a van/truck/trolley” vs “ship/transport cargo.” Different verbs reflect the category difference. Why Other Options Are Wrong: They are all conveyances/platforms and share a functional class. Common Pitfalls: Ignore spelling variants; the core semantic roles are what matter. Final Answer: Cargo

Question 12

Find the odd animal (beast of burden vs common pet): Select the option that is not typically used as a draught/pack animal.

Accepted Answer

Introduction / Context: Human–animal roles provide a robust basis for classification. Many domesticated species are historically used for transport, ploughing, and hauling (draught/pack animals). Others are chiefly kept as pets/companions and are not employed for traction. This role difference isolates the outlier clearly. Given Data / Assumptions: Camel: pack/draught animal, especially in arid regions. Horse: classic riding and draught animal. Ox: castrated adult male cattle used widely as draught power. Cat: household pet; not used for traction or load-carrying. Concept / Approach: Group items by primary traditional human use: draught/pack capability vs companionship. The first three are work animals; the cat is primarily a companion/pest-control animal, not suited or used for pulling or carrying loads. Step-by-Step Solution: 1) Identify draught/pack animals: Camel, Horse, Ox.2) Identify companion pet: Cat.3) Cat is the only non-draught/non-pack animal → odd one out. Verification / Alternative check: Historical records and husbandry practices universally document horses, camels, and oxen as traction. No such tradition exists for cats. Why Other Options Are Wrong: They share the “working animal for traction/transport” role. Common Pitfalls: Do not confuse occasional pest control by cats with draught/pack functionality; these are different roles. Final Answer: Cat

Question 13

Find the odd social behavior (crime vs attitude): Pick the option that is not a criminal offense but a social trait/attitude.

Accepted Answer

Introduction / Context: Legal vs social-behavioral categories offer a crisp separator. Crimes are prohibited acts punishable under law, whereas attitudes are dispositions or behaviors that may be undesirable but are not, by themselves, criminal offenses. Mixing these yields an unmistakable odd-one-out. Given Data / Assumptions: Blackmail: criminal coercion to obtain money/favors by threats. Smuggling: criminal transport of goods/persons contrary to law. Forgery: criminal falsification of documents/instruments for deceit. Snobbery: a haughty/elitist attitude; socially disliked, but not a crime per se. Concept / Approach: Classify each term by its legal status. Three are codified offenses with elements and penalties; one is an attitude without statutory criminality absent additional acts. Step-by-Step Solution: 1) Mark criminal offenses: Blackmail, Smuggling, Forgery.2) Mark social attitude: Snobbery.3) Therefore, Snobbery is the odd item. Verification / Alternative check: Check legal codes or common definitions: the first three entail unlawful actions; snobbery is descriptive of demeanor. Why Other Options Are Wrong: They all denote prosecutable acts rather than mere dispositions. Common Pitfalls: Do not equate moral judgment with legal status; illegality requires defined acts. Final Answer: Snobbery

Question 14

Find the odd shape/object (spherical vs ring): Choose the option that is not spherical/globular but a circular band.

Accepted Answer

Introduction / Context: Shape and topology provide reliable classification criteria. Spherical (or near-spherical) objects have roughly equal dimensions in all directions and enclose volume with no edges. A bangle, however, is a ring-shaped band (topologically a torus-like loop) rather than a sphere. This geometric difference yields a clear odd-one-out. Given Data / Assumptions: Earth: approximately spherical (oblate spheroid) celestial body. Moon: approximately spherical natural satellite. Football: in common (association football) usage, a near-sphere ball; used on the field of play. Bangle: a rigid circular band with a central hole; not a sphere. Concept / Approach: Group by 3D shape class: sphere vs ring. Three items are spherical/near-spherical solids; one is a hollow circular band. The difference is categorical: a sphere has no hole and encloses volume uniformly; a ring has a central aperture and different geometry. Step-by-Step Solution: 1) Tag spherical items: Earth, Moon, (soccer) Football.2) Tag ring-shaped item: Bangle.3) The only non-spherical object is Bangle → odd one out. Verification / Alternative check: Consider physical handling: balls roll as spheres; bangles slip over wrists due to the hole—distinct behaviors from spheres. Why Other Options Are Wrong: They share the same gross spherical geometry in everyday understanding. Common Pitfalls: Do not confuse “American football” (prolate spheroid) with association football; standard reasoning items intend the spherical soccer ball. Final Answer: Bangle

Question 15

Find the odd book component (whole vs parts): Select the option that denotes the complete entity rather than a constituent part or section.

Accepted Answer

Introduction / Context: Hierarchy/part-whole reasoning is a staple in verbal classification. A book is the complete artifact, while pages, chapters, and an index are components or sections that belong to the structure of a book. Mixing whole with parts creates an unambiguous odd-one-out based on granularity. Given Data / Assumptions: Book: the entire compiled work. Pages: the individual leaves/sheets on which content is printed. Chapters: major divisions/sections within the book. Index: back-of-book alphabetical locator for topics/pages. Concept / Approach: Apply part-whole classification. Three entries refer to components contained by a book; one entry refers to the container/whole that contains those components. The granularity mismatch (whole vs parts) identifies the outlier. Step-by-Step Solution: 1) Mark components: Pages, Chapters, Index.2) Mark whole: Book.3) Therefore, Book is the only non-component → odd one out. Verification / Alternative check: Think of assembly: one compiles chapters and pages (and prepares an index) to produce a book; the direction of composition confirms the hierarchy. Why Other Options Are Wrong: They each denote a constituent element that exists only as part of a book (or similar compiled work). Common Pitfalls: Do not be distracted by where the index appears (front/back); location does not change its status as a component. Final Answer: Book

Question 16

Classification – Odd one out (natural vs man-made water features): Identify the item that does not belong with the others: Stream, Spring, Dam, River.

Accepted Answer

Introduction / Context: Odd-one-out questions test your ability to discover a unifying property shared by most options and then isolate the single member that violates it. Here we are given four water-related terms—three refer to naturally occurring features, while one is a human-made structure. Given Data / Assumptions: Stream: a small, naturally flowing body of water. Spring: a natural point where groundwater flows to the surface. River: a large, naturally flowing channel of water that moves toward a sea, lake, or another river. Dam: a man-made barrier built across a watercourse to store, divert, or control water. Concept / Approach: First, group items by origin. If three are naturally occurring hydrological features and one is an engineered structure, the engineered item is the outlier. This categorical (natural vs man-made) distinction is crisp and leaves no ambiguity. Step-by-Step Solution: Classify each option by origin.Stream → natural.Spring → natural.River → natural.Dam → artificial (human-built). Verification / Alternative check: Consider purpose/function: streams, springs, and rivers transport or emerge as water flows in nature; a dam exists to regulate or store that flow, typically creating a reservoir—again highlighting the man-made exception. Why Other Options Are Wrong: Stream, Spring, and River are all natural water bodies/features and therefore consistent with each other. Common Pitfalls: Confusing spring (natural outlet of groundwater) with a mechanical coil; in hydrology, a spring is natural and not constructed. Final Answer: Dam

Question 17

Classification – Odd one out (gender of animal terms): Which term is unlike the others: Mare, Stag, Lioness, Bitch?

Accepted Answer

Introduction / Context: This verbal classification item relies on the grammatical gender of animal terms. Three of the options are explicitly female terms; one is explicitly male. Identifying the gender encoded in common zoological vocabulary isolates the outlier unambiguously. Given Data / Assumptions: Mare: adult female horse. Stag: adult male deer. Lioness: adult female lion. Bitch: adult female dog. Concept / Approach: Map each word to its sex-specific meaning. If three denote female animals and one denotes a male animal, the male term stands out as the odd one. Step-by-Step Solution: Mare → female.Lioness → female.Bitch → female.Stag → male. Verification / Alternative check: Check for any polysemy that could confuse the mapping (e.g., slang). In standard zoological English, the above definitions are consistent and widely accepted, giving a unique 3-to-1 split. Why Other Options Are Wrong: Mare, Lioness, and Bitch are all female-specific terms and therefore belong to the same category. Common Pitfalls: Assuming “bitch” is unacceptable as a technical term; within zoology, it is standard for a female dog, which is the intended sense here. Final Answer: Stag

Question 18

Classification – Odd one out (rainbow / spectral colors): Which color does not belong with the spectral (VIBGYOR) set: Green, Indigo, Pink, Violet?

Accepted Answer

Introduction / Context: Many classification questions use the standard rainbow (spectral) colors remembered by the mnemonic VIBGYOR: Violet, Indigo, Blue, Green, Yellow, Orange, Red. Any color outside that set becomes a clean odd one out when mixed with true spectral members. Given Data / Assumptions: Spectral set includes Violet, Indigo, Blue, Green, Yellow, Orange, Red. Pink is a non-spectral, composite/perceptual color rather than a distinct wavelength band. Concept / Approach: Test membership in the canonical VIBGYOR set. Items within VIBGYOR are natural rainbow bands; items outside are not. The single non-member is the outlier. Step-by-Step Solution: Green → spectral member.Indigo → spectral member.Violet → spectral member.Pink → not a spectral band; perceived from combinations (e.g., desaturated reds with white). Verification / Alternative check: Even if “indigo” is sometimes debated in modern pedagogy, both Green and Violet are undisputed spectral colors, and Pink is clearly non-spectral. This maintains a unique outlier. Why Other Options Are Wrong: Green, Indigo, and Violet are recognized rainbow colors. Common Pitfalls: Confusing favorite or common paint colors with spectral physics. “Pink” is not a pure wavelength band. Final Answer: Pink

Question 19

Classification – Odd one out (money inflow vs outflow/negative): Pick the term that does not align with outflow/negative direction: Debit, Deposit, Deduction, Withdrawal.

Accepted Answer

Introduction / Context: Banking and bookkeeping vocabulary often encodes direction of funds. In personal banking context, “deposit” indicates money moving into an account, while terms like “withdrawal,” “debit,” and many “deductions” reflect outflow or a negative effect on balance. This directional contrast yields a crisp odd-one-out. Given Data / Assumptions: Deposit: money credited to an account (inflow). Withdrawal: money taken out (outflow). Debit: in everyday bank statements for customers, debits reduce balance. Deduction: reduction (e.g., fees/taxes), typically decreasing the amount received or the balance. Concept / Approach: Normalize the direction relative to a typical retail banking account holder. Identify the single inflow term among three outflow/negative terms. Step-by-Step Solution: Deposit → increases balance (inflow).Withdrawal → decreases balance (outflow).Debit → decreases balance (outflow from customer’s perspective).Deduction → decreases payable/receivable, effectively negative relative to the holder. Verification / Alternative check: In double-entry accounting, “debit” can mean different things depending on the account type, but in retail bank statements, debit entries commonly reduce the visible balance, preserving the intended 3-to-1 split. Why Other Options Are Wrong: Withdrawal, Debit, and Deduction all represent negative or outflow effects. Common Pitfalls: Overcomplicating with double-entry system classifications; focus on typical bank-account holder viewpoint for clarity. Final Answer: Deposit

Question 20

Classification – Odd one out (planet with known life): Which planet is unlike the others: Jupiter, Uranus, Mercury, Earth?

Accepted Answer

Introduction / Context: Astronomy classification questions often rely on broad, uncontested properties. The most decisive distinction here is the presence of known life. Among the listed planets, only Earth is confirmed to harbor life, making it a unique outlier compared to gas/ice giants and airless inner worlds. Given Data / Assumptions: Earth: only planet confirmed to support life as we know it. Jupiter: gas giant; hostile atmospheric conditions, no known life. Uranus: ice giant; extreme conditions, no known life. Mercury: rocky, near-Sun; extreme temperature swings, no known life. Concept / Approach: Pick a categorical attribute that creates a single-member class. “Known life” is definitive and produces a one-of-a-kind outlier. Step-by-Step Solution: Check life status: Earth → known life; others → none known.Alternative groupings (composition, distance) do not yield a single unique member among these four. Verification / Alternative check: One could try “terrestrial vs giant,” but Earth and Mercury would both be terrestrial, failing uniqueness. The “life present” criterion is uniquely decisive. Why Other Options Are Wrong: Jupiter, Uranus, Mercury: no confirmed life; they do not share Earth’s biosignature status. Common Pitfalls: Choosing composition or orbital position, which does not isolate a single option here. Final Answer: Earth

Classification Questions