Is it true that humans only use 10% of their brain, a commonly repeated claim

False, this is a myth; brain imaging shows most of the brain is active over a day

Is it true that a penny dropped from a tall building, like the Empire State Building, could kill a person on the ground below

False, this is a myth; a penny's shape and light weight prevent it from reaching lethal velocity

Is it true that goldfish have a memory span of only a few seconds

False, this is a myth; goldfish can actually remember things for months

Is it true that bulls become angry and charge specifically because they are provoked by the color red

False, this is a myth; bulls are actually colorblind to red and react to movement rather than color

Is it true that a "photographic memory," the ability to perfectly recall visual images in complete detail, has been scientifically verified to exist in adults

False, scientifically rigorous, verified cases of true adult photographic memory are essentially nonexistent, despite popular belief

Common Scientific Misconceptions MCQs 2026

66 questions with detailed answers · 0 from past papers · 7 quiz batches available

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Page 1 of 1 Questions 1–10 of 66

Q1 medium

Is it true that humans only use 10% of their brain, a commonly repeated claim
1. A True, this is scientifically accurate
2. B False, this is a myth; brain imaging shows most of the brain is active over a day
3. C True, but only during sleep
4. D True, but only in children
💡 Explanation:
The "10% of the brain" claim is a myth; brain imaging studies show that most regions of the brain are active over the course of a day.
Q2 medium

Is it true that a penny dropped from a tall building, like the Empire State Building, could kill a person on the ground below
1. A False, this is a myth; a penny's shape and light weight prevent it from reaching lethal velocity
2. B True, this is scientifically accurate
3. C True, but only if dropped from buildings taller than 500 meters
4. D True, but only in windless conditions
💡 Explanation:
This is a myth; a penny's light weight and irregular tumbling motion prevent it from reaching a velocity that would be lethal.
Q3 medium

Is it true that goldfish have a memory span of only a few seconds
1. A False, this is a myth; goldfish can actually remember things for months
2. B True, this is scientifically accurate
3. C True, but only for goldfish over one year old
4. D True, but only in captivity, not in the wild
💡 Explanation:
This is a myth; research has shown goldfish can actually remember things for several months, not just a few seconds.
Q4 medium

Is it true that bulls become angry and charge specifically because they are provoked by the color red
1. A False, this is a myth; bulls are actually colorblind to red and react to movement rather than color
2. B True, this is well-established scientifically
3. C True, but only for certain bull breeds
4. D True, but only during specific mating seasons
💡 Explanation:
This is a myth; bulls are colorblind to red (dichromatic vision) and react to the movement of the cape rather than its color.
Q5 hard

Is it true that a "photographic memory," the ability to perfectly recall visual images in complete detail, has been scientifically verified to exist in adults
1. A False, scientifically rigorous, verified cases of true adult photographic memory are essentially nonexistent, despite popular belief
2. B True, this is scientifically well-documented and common
3. C True, but only in a small percentage of the population
4. D True, but only for individuals with certain genetic conditions
💡 Explanation:
Despite popular belief, scientifically rigorous, verified cases of true adult "photographic memory" are essentially nonexistent.
Q6 medium

Is it true that we only use the left side of our brain for logic and the right side exclusively for creativity, a popular but oversimplified claim
1. A False, this "left-brain/right-brain" dichotomy is a significant oversimplification; both hemispheres work together for most cognitive tasks
2. B True, this is scientifically well-established and accurate
3. C True, but only for right-handed individuals
4. D True, but only during specific cognitive tasks
💡 Explanation:
This "left-brain/right-brain" claim significantly oversimplifies brain function; both hemispheres actually work together for most cognitive tasks.
Q7 medium

Is it true that a "blood moon" (total lunar eclipse) poses any direct physical danger or harmful radiation to observers on Earth
1. A False, this is a myth; a lunar eclipse poses no direct physical danger to observers
2. B True, this is scientifically accurate
3. C True, but only for observers at high altitudes
4. D True, but only for prolonged direct viewing without protection
💡 Explanation:
This is a myth; observing a lunar eclipse ("blood moon") poses no direct physical danger, unlike looking directly at a solar eclipse.
Q8 medium

Is it true that you lose most of your body heat through your head specifically, more than other body parts of similar size
1. A False, this is a myth stemming from outdated research; heat loss is roughly proportional to any exposed skin surface area
2. B True, this is well-established scientifically
3. C True, but only in extremely cold temperatures
4. D True, but only for infants, not adults
💡 Explanation:
This is a myth stemming from flawed research; heat loss occurs roughly proportional to any exposed skin surface area, not disproportionately through the head.
Q9 medium

Is it true that shaving hair causes it to grow back thicker or faster
1. A False, this is a myth; shaving does not affect hair thickness, color, or growth rate
2. B True, this is scientifically accurate
3. C True, but only for facial hair specifically
4. D True, but only in younger individuals
💡 Explanation:
This is a myth; shaving cuts hair at the surface and does not affect its actual thickness, color, or growth rate.
Q10 medium

Is it true that we experience a "sugar rush" of hyperactivity from eating sugary foods
1. A False, controlled scientific studies have not consistently supported a direct causal sugar-hyperactivity link
2. B True, this is well-established scientifically
3. C True, but only in children under age 5
4. D True, but only when combined with caffeine
💡 Explanation:
Despite popular belief, controlled scientific studies have not consistently supported a direct causal link between sugar consumption and hyperactivity.
Q11 medium

Is it true that cracking your knuckles causes arthritis
1. A False, scientific studies have not found a link between knuckle cracking and arthritis
2. B True, this is well-established scientifically
3. C True, but only if done more than 10 times daily
4. D True, but only after age 40
💡 Explanation:
Scientific studies have not found a causal link between knuckle cracking and the development of arthritis.
Q12 medium

Is it true that the Great Wall of China is visible from space with the naked eye
1. A False, this is a commonly repeated myth; it is not visible without aid from low Earth orbit
2. B True, this is scientifically accurate
3. C True, but only during clear weather conditions
4. D True, but only from certain angles
💡 Explanation:
Despite being a popular claim, the Great Wall of China is not visible to the naked eye from space, according to astronauts.
Q13 medium

Is it true that different areas of the tongue are responsible for detecting different specific tastes (the "tongue map" concept)
1. A False, this is a debunked myth; all taste buds can generally detect all basic tastes
2. B True, this is scientifically accurate
3. C True, but only for sweet and bitter tastes
4. D True, but only in young children
💡 Explanation:
The "tongue map" showing distinct taste zones is a debunked myth; taste buds across the tongue can generally detect all basic tastes.
Q14 medium

Is it true that lightning never strikes the same place twice
1. A False, this is a myth; lightning can and does strike the same location multiple times
2. B True, this is scientifically accurate
3. C True, but only for locations below sea level
4. D True, but only in desert climates
💡 Explanation:
This is a myth; lightning frequently strikes the same location multiple times, particularly tall structures like skyscrapers.
Q15 medium

Is it true that you should wait at least an hour after eating before swimming, to avoid dangerous cramping
1. A False, this is a myth; there is no strong scientific evidence supporting this specific waiting requirement
2. B True, this is well-established medical advice
3. C True, but only for swimming in cold water
4. D True, but only for children under age 12
💡 Explanation:
This is largely a myth; there is no strong scientific evidence supporting a mandatory waiting period after eating before swimming.
Q16 medium

Is it true that hair and fingernails continue to grow after death
1. A False, this is a myth; the appearance of growth is due to skin dehydration and retraction, not actual growth
2. B True, this is scientifically accurate
3. C True, but only for a few hours after death
4. D True, but only in certain temperature conditions
💡 Explanation:
This is a myth; the appearance of continued growth after death is actually due to skin dehydration and retraction, not genuine hair/nail growth.
Q17 easy

Is it true that humans and dinosaurs coexisted at some point in history
1. A False, this is scientifically inaccurate; dinosaurs went extinct approximately 66 million years before humans evolved
2. B True, based on the fossil record
3. C True, but only for a brief overlapping period
4. D True, but only in certain geographic regions
💡 Explanation:
This is scientifically inaccurate; non-avian dinosaurs went extinct approximately 66 million years before modern humans evolved.
Q18 medium

Is it true that evolution means humans "descended from monkeys" in a direct, simple lineage sense
1. A False, this oversimplifies the concept; humans and modern monkeys share a common ancestor rather than humans descending directly from modern monkeys
2. B True, this accurately describes evolutionary theory
3. C True, but only according to outdated evolutionary theory
4. D True, but only for certain human populations
💡 Explanation:
This oversimplifies evolutionary theory; humans and modern monkeys/apes share a common ancestor, rather than humans descending directly from modern monkeys.
Q19 medium

Is it true that the Coriolis effect determines which direction water drains in a sink or toilet, differing between hemispheres
1. A False, this is a myth for small-scale drains; the Coriolis effect is far too weak to influence drain direction at this small scale
2. B True, this is scientifically accurate for all drains
3. C True, but only for drains larger than one meter in diameter
4. D True, but only near the equator
💡 Explanation:
This is a myth for small-scale drains; the Coriolis effect is far too weak to meaningfully influence drainage direction in sinks or toilets.
Q20 medium

Is it true that touching a baby bird will cause its mother to reject and abandon it due to human scent
1. A False, this is largely a myth; most birds have a poor sense of smell and will not reject young based on human scent alone
2. B True, this is well-established biological fact for all bird species
3. C True, but only for certain specific bird species
4. D True, but only if touched for more than a few seconds
💡 Explanation:
This is largely a myth; most birds have a relatively poor sense of smell and generally will not reject young simply due to human scent.
Q21 medium

Is it true that the tongue has distinct, separate taste zones so precisely mapped that sweet can only be tasted at the tip
1. A False, this specific claim is part of the debunked "tongue map" myth
2. B True, this is scientifically precise and accurate
3. C True, but only for certain food textures
4. D True, but only in older adults
💡 Explanation:
This specific claim is part of the debunked "tongue map" myth; taste buds across the tongue can generally detect all basic tastes, not in such rigidly separated zones.
Q22 hard

Is it true that carrots specifically and significantly improve night vision beyond normal levels, a popular claim with wartime origins
1. A False, this is largely a myth exaggerated for propaganda purposes; carrots support general eye health via Vitamin A but do not grant enhanced night vision
2. B True, this is scientifically well-established
3. C True, but only for individuals with pre-existing Vitamin A deficiency
4. D True, but only when eaten in very large quantities daily
💡 Explanation:
While largely exaggerated for WWII propaganda purposes, carrots do support general eye health via Vitamin A, and deficiency-related vision issues can improve with adequate intake, though this doesn't grant enhanced-beyond-normal night vision.
Q23 medium

Is it true that different regions of the brain are used exclusively for single functions, with no overlap or shared processing between areas
1. A False, brain function is more complex and interconnected than this oversimplified view suggests
2. B True, this is scientifically precise and accurate
3. C True, but only for basic motor functions
4. D True, but only in early childhood brain development
💡 Explanation:
This oversimplifies brain function; different brain regions actually work together in complex, interconnected ways rather than functioning in complete isolation.
Q24 hard

Is it true that Napoleon Bonaparte was unusually short compared to men of his era, a commonly repeated historical claim
1. A False, this is a myth stemming from measurement unit confusion; Napoleon was actually of average height for his time
2. B True, this is a well-documented historical fact
3. C True, but only compared to modern height standards, not his contemporaries
4. D True, but only according to British historical records specifically
💡 Explanation:
This is a myth stemming from confusion between French and English measurement units; Napoleon was actually of roughly average height for his era.
Q25 medium

Is it true that swallowed chewing gum stays in your digestive system for seven years
1. A False, this is a myth; swallowed gum passes through the digestive system in a similar timeframe to other indigestible material
2. B True, this is scientifically accurate
3. C True, but only for sugar-free gum
4. D True, but only in children
💡 Explanation:
This is a myth; while gum is not digested, it passes through the digestive system in a normal timeframe, similar to other indigestible material.
Q26 hard

Is it true that the myth of "spontaneous human combustion," where a person suddenly bursts into flames without external ignition, is scientifically supported
1. A False, no scientifically verified cases of true spontaneous human combustion exist; documented cases have alternative explanations
2. B True, this is a rare but scientifically documented phenomenon
3. C True, but only under specific atmospheric conditions
4. D True, but only for individuals with certain metabolic conditions
💡 Explanation:
No scientifically verified cases of true spontaneous human combustion exist; purported cases generally have alternative, scientifically explicable causes.
Q27 medium

Is it true that humans have five senses total, a commonly taught but oversimplified claim
1. A False, this oversimplifies human sensory perception; scientists generally recognize additional senses beyond the traditional five
2. B True, this is scientifically complete and accurate
3. C True, but only according to ancient philosophical classifications
4. D True, but only for the primary senses used in daily conscious perception
💡 Explanation:
This oversimplifies sensory perception; scientists recognize additional senses beyond the traditional five, such as balance (vestibular sense) and body position awareness (proprioception).
Q28 medium

Is it true that going outside with wet hair in cold weather will directly cause you to catch a cold
1. A False, colds are caused by viruses, not cold temperature or wet hair exposure directly
2. B True, this is scientifically well-established
3. C True, but only if hair remains wet for over an hour
4. D True, but only in temperatures below freezing
💡 Explanation:
This is a myth; the common cold is caused by viruses, not directly by cold temperatures or wet hair, though cold weather may indirectly affect immune function in some contexts.
Q29 easy

Is it true that antibiotics are effective against viral infections, such as the common cold or flu
1. A False, antibiotics specifically target bacteria and are ineffective against viral infections
2. B True, this is scientifically accurate
3. C True, but only for severe viral infections
4. D True, but only when combined with other medications
💡 Explanation:
This is false; antibiotics specifically target bacteria and are ineffective against viral infections like the common cold or flu.
Q30 medium

Is it true that glass is technically a slow-flowing liquid, explaining why old windows are supposedly thicker at the bottom
1. A False, this is a myth; glass is an amorphous solid, and old window thickness variation is due to manufacturing methods, not flow
2. B True, this is scientifically accurate
3. C True, but only for glass older than 200 years
4. D True, but only in warm climates
💡 Explanation:
This is a myth; glass is an amorphous solid, and thickness variations in old windows result from historical manufacturing methods, not gradual flow.
Q31 easy

Is it true that vaccines cause autism, a claim based on a now-discredited and retracted study
1. A False, extensive scientific research has found no link between vaccines and autism
2. B True, this is scientifically well-established
3. C True, but only for certain specific vaccines
4. D True, but only when multiple vaccines are given simultaneously
💡 Explanation:
This claim is false; extensive scientific research has consistently found no link between vaccines and autism, and the original study was retracted due to fraud.
Q32 medium

Is it true that Einstein failed mathematics as a student, a commonly repeated claim about his early academic performance
1. A False, this is a myth; historical records show Einstein excelled in mathematics from a young age
2. B True, this is a well-documented historical fact
3. C True, but only during one specific school term
4. D True, but only before he immigrated to a new country
💡 Explanation:
This is a myth; historical records actually show that Einstein excelled in mathematics from a young age, contrary to the popular claim.
Q33 medium

Is it true that the "5-second rule" makes food safe to eat if picked up quickly enough after falling on the floor
1. A False, bacteria can transfer to food almost instantly upon contact with a contaminated surface
2. B True, this is scientifically accurate
3. C True, but only for dry foods
4. D True, but only on clean floors
💡 Explanation:
This is a myth; scientific studies show bacteria can transfer to food almost instantly upon contact with a contaminated surface, regardless of contact duration.
Q34 medium

Is it true that reading in dim light will permanently damage your eyesight
1. A False, dim light reading may cause temporary eye strain but does not cause permanent damage
2. B True, this is scientifically well-established
3. C True, but only for children
4. D True, but only when reading for more than 5 hours continuously
💡 Explanation:
This is a myth; reading in dim light may cause temporary eye strain but does not cause permanent damage to eyesight.
Q35 medium

Is it true that humans have completely mapped and understand the full function of 100% of their DNA, with no remaining mystery
1. A False, while the human genome has been sequenced, the function of significant portions, sometimes called "junk DNA," is still being actively researched and understood
2. B True, this is scientifically complete and accurate
3. C True, but only as of the most recent decade of research
4. D True, but only regarding protein-coding genes specifically
💡 Explanation:
While the human genome has been sequenced, the function of significant portions of DNA is still being actively researched, and full functional understanding remains incomplete.
Q36 hard

Is it true that adding salt to water significantly lowers its boiling point, making pasta cook faster
1. A False, salt actually slightly raises the boiling point of water, though the effect on cooking time is minimal at typical cooking concentrations
2. B True, this is scientifically accurate
3. C True, but only for large quantities of salt exceeding typical cooking use
4. D True, but only at high altitudes
💡 Explanation:
This is a common misconception; salt actually slightly raises the boiling point of water rather than lowering it, though the practical effect at typical cooking concentrations is minimal.
Q37 medium

Is it true that the concept of "left brain" people being more logical and "right brain" people being more creative has been strongly validated by neuroimaging studies
1. A False, neuroimaging studies have not found strong support for this personality-type dichotomy based on brain hemisphere dominance
2. B True, this is strongly validated by modern neuroimaging
3. C True, but only for right-handed individuals specifically
4. D True, but only for creative professionals specifically
💡 Explanation:
Neuroimaging studies have not found strong support for this popular personality-type dichotomy based on claimed brain hemisphere dominance.
Q38 medium

Is it true that consuming turkey specifically makes people unusually sleepy due to its tryptophan content, more so than other protein sources
1. A False, this is largely a myth; turkey contains similar tryptophan levels to many other meats, and post-meal sleepiness is more related to large meal size/carbohydrates
2. B True, this is scientifically well-established
3. C True, but only for wild turkey, not farm-raised
4. D True, but only when eaten without other food
💡 Explanation:
This is largely a myth; turkey's tryptophan content is similar to many other meats, and post-meal sleepiness is more related to overall meal size and carbohydrate content.
Q39 hard

Is it true that the color black absorbs all heat and light, technically making pure black objects always hotter in sunlight than any other color
1. A Generally true in principle for absorption, though "always hotter than any other color" oversimplifies real-world factors like material and surface properties
2. B Completely false with no scientific basis whatsoever
3. C True, but only for objects smaller than one meter
4. D True, but only in tropical climates
💡 Explanation:
While black objects generally absorb more visible light/heat than lighter colors, the blanket claim of "always hotter than any other color" oversimplifies real-world factors like material composition and other properties.
Q40 easy

Is it true that all bacteria are harmful to human health
1. A False, many bacteria are beneficial or neutral, including those essential for digestion and immune function
2. B True, all bacteria cause disease
3. C True, but only bacteria found outside the body are harmful
4. D True, but only bacteria visible without a microscope are harmful
💡 Explanation:
This is false; many bacteria are actually beneficial or neutral, including those essential for human digestion and immune function.
Q41 medium

Is it true that humans and modern apes evolved directly from each other in a simple, linear progression
1. A False, humans and modern apes share a common ancestor but did not evolve directly from one another
2. B True, this is scientifically accurate
3. C True, but only according to older evolutionary models
4. D True, but only for certain great ape species
💡 Explanation:
This is false; humans and modern apes share a common ancestor rather than one evolving directly from the other.
Q42 medium

Is it true that the "Mozart Effect" claim, suggesting listening to Mozart significantly and permanently boosts a baby's intelligence, is strongly supported by rigorous scientific evidence
1. A False, subsequent rigorous studies have largely failed to replicate strong, lasting intelligence effects from this specific claim
2. B True, this is scientifically well-established
3. C True, but only for classical music by Mozart specifically, not other composers
4. D True, but only during a specific developmental window in infancy
💡 Explanation:
Subsequent rigorous studies have largely failed to replicate strong, lasting intelligence-boosting effects from this popularized claim.
Q43 medium

Is it true that natural substances and remedies are always inherently safer than synthetic or manufactured alternatives
1. A False, "natural" does not inherently equate to "safe"; many natural substances can be toxic or harmful
2. B True, this is a reliable general rule
3. C True, but only for substances derived from plants specifically
4. D True, but only when used in small quantities
💡 Explanation:
This is a misconception; being "natural" does not inherently mean something is safe, as many natural substances can be toxic or harmful.
Q44 medium

Is it true that the full moon causes an increase in erratic human behavior or crime rates, a persistent popular belief
1. A False, numerous scientific studies have found no consistent, statistically significant link between full moons and behavioral changes
2. B True, this is scientifically well-established
3. C True, but only in specific demographic groups
4. D True, but only in urban areas
💡 Explanation:
Despite persistent popular belief, numerous scientific studies have found no consistent, statistically significant link between full moons and behavioral changes.
Q45 medium

Is it true that we are constantly, continuously losing and replacing all the cells in our body on a fixed seven-year cycle, resulting in a completely new body
1. A False, this oversimplifies cell turnover; different cell types have vastly different replacement rates, and this specific fixed cycle claim is inaccurate
2. B True, this is scientifically precise and accurate
3. C True, but only for skin cells specifically
4. D True, but only according to older biological understanding, now revised to a different fixed number
💡 Explanation:
This oversimplifies cell turnover; different cell types have vastly different replacement rates, and the specific "seven-year" claim is not scientifically accurate.
Q46 medium

Is it true that touching or handling a toad will cause warts to develop on human skin
1. A False, warts are caused by human papillomavirus (HPV), not by contact with toads or frogs
2. B True, this is scientifically well-established
3. C True, but only for certain toad species
4. D True, but only if the toad's skin is broken during contact
💡 Explanation:
This is a myth; warts are caused by human papillomavirus (HPV), completely unrelated to contact with toads or frogs.
Q47 easy

True or False: Lightning never strikes the same place twice
1. A True
2. B False
3. C Only true for tall buildings
4. D Only true in flat terrain
💡 Explanation:
This is a myth. Lightning frequently strikes the same location repeatedly, especially tall structures like skyscrapers and towers.
Q48 medium

True or False: Bulls become enraged specifically by the color red
1. A True
2. B False
3. C Only true for certain bull breeds
4. D Only true during mating season
💡 Explanation:
This is a myth. Bulls are colorblind to red; they react to the movement of the cape being waved, not its color.
Q49 medium

True or False: Goldfish have a memory span of only a few seconds
1. A True
2. B False
3. C Only true for goldfish over one year old
4. D Only true in small tanks
💡 Explanation:
This is a myth. Studies show goldfish can remember information for months, not just seconds.
Q50 medium

True or False: Humans only use 10% of their brains, with the remaining 90% being unused
1. A True
2. B False
3. C Only true for certain individuals
4. D Only true during sleep
💡 Explanation:
This is a common myth. Brain imaging shows that humans use virtually all parts of their brain, just not all areas simultaneously at every moment.
Q51 medium

True or False: Shaving hair causes it to grow back thicker or faster
1. A True
2. B False
3. C Only true for certain hair types
4. D Only true on the scalp specifically
💡 Explanation:
This is a myth. Shaving does not affect hair thickness, color, or growth rate; the appearance of thickness is due to the blunt-cut tip.
Q52 medium

True or False: Vitamin C prevents the common cold
1. A True
2. B False
3. C Only prevents cold if taken before symptoms begin
4. D Only effective in very high doses
💡 Explanation:
Research generally shows Vitamin C does not prevent colds, though it may modestly reduce the duration of symptoms in some studies.
Q53 medium

True or False: Sugar consumption directly causes hyperactivity in children
1. A True
2. B False
3. C Only true for very large quantities of sugar
4. D Only true for children under age 5
💡 Explanation:
Multiple controlled studies have found no consistent scientific evidence directly linking sugar consumption to hyperactivity in children.
Q54 medium

True or False: You should wait at least an hour after eating before swimming, or you risk severe cramps
1. A True
2. B False
3. C Only true after eating very large meals
4. D Only true in cold water specifically
💡 Explanation:
This is largely a myth. While digestion diverts some blood flow, the risk of severe cramps preventing safe swimming shortly after eating is generally overstated.
Q55 medium

True or False: Cracking your knuckles causes arthritis
1. A True
2. B False
3. C Only true if done excessively over many years
4. D Only true for certain joint types
💡 Explanation:
This is a myth. Scientific studies have not found a definitive link between knuckle cracking and the development of arthritis.
Q56 medium

True or False: Different areas of the tongue are exclusively responsible for detecting different specific tastes (the "tongue map" concept)
1. A True
2. B False
3. C Only true for sweet and bitter tastes specifically
4. D Only true in young children
💡 Explanation:
This is a myth. All taste buds across the tongue can generally detect all basic tastes, contrary to the outdated "tongue map" concept.
Q57 easy

True or False: Humans and dinosaurs coexisted at the same time on Earth
1. A True
2. B False
3. C Only certain small dinosaur species coexisted with early humans
4. D Only true for the very last dinosaur species before extinction
💡 Explanation:
This is false. Non-avian dinosaurs went extinct approximately 66 million years ago, while modern humans emerged only around 300,000 years ago.
Q58 medium

True or False: The Great Wall of China is visible from space with the naked eye
1. A True
2. B False
3. C Only visible from low Earth orbit specifically
4. D Only visible at certain times of year
💡 Explanation:
This is a myth. The Great Wall is not distinctly visible to the naked eye from space; this claim has been debunked by astronauts.
Q59 medium

True or False: Antibiotics are effective treatments for viral infections, such as the common cold or flu
1. A True
2. B False
3. C Only effective for severe viral infections specifically
4. D Only effective when combined with other medications
💡 Explanation:
This is false and an important medical misconception. Antibiotics target bacteria and are ineffective against viral infections like colds and flu.
Q60 hard

True or False: Glass is technically a slow-moving liquid, which is why old windowpanes are sometimes thicker at the bottom
1. A True
2. B False
3. C Only true for glass older than 500 years
4. D Only true for glass kept at high temperatures
💡 Explanation:
This is a myth. Glass is an amorphous solid, not a slow-flowing liquid; older windowpane thickness variations result from historical manufacturing methods, not gradual flow.
Q61 medium

True or False: Humans have exactly five senses (sight, hearing, smell, taste, touch), with no additional recognized senses
1. A True
2. B False
3. C Only true for the senses studied before the 20th century
4. D Only true for infants, before other senses develop
💡 Explanation:
This is an oversimplification. Scientists recognize additional senses beyond the traditional five, such as balance (vestibular sense) and body position awareness (proprioception).
Q62 medium

True or False: Adding sugar to water lowers its boiling point, allowing it to boil faster
1. A True
2. B False
3. C Only true for very small amounts of sugar
4. D Only true at high altitudes
💡 Explanation:
This is false. Adding sugar (or any solute) to water actually raises its boiling point slightly, rather than lowering it.
Q63 hard

True or False: The Coriolis effect determines which direction water drains in a toilet or sink (clockwise vs counterclockwise) based on hemisphere
1. A True
2. B False
3. C Only true for very large bodies of water specifically
4. D Only true exactly at the equator
💡 Explanation:
This is a myth for small basins like sinks and toilets; the Coriolis effect is far too weak at that scale, and drain direction is determined by basin shape and other factors.
Q64 medium

True or False: A penny dropped from a very tall building, like the Empire State Building, could kill a person on the ground below
1. A True
2. B False
3. C Only true if dropped from an even taller structure
4. D Only true in windless conditions
💡 Explanation:
This is a myth. Due to air resistance and the penny's shape, its terminal velocity is not high enough to be lethal upon impact.
Q65 medium

True or False: Chameleons primarily change color specifically to camouflage with their surroundings
1. A True
2. B False
3. C Only true for certain chameleon species
4. D Only true when threatened by predators specifically
💡 Explanation:
This is a common misconception. Chameleons primarily change color for communication and temperature regulation, not primarily for camouflage.
Q66 medium

True or False: Touching a baby bird will cause its mother to abandon it due to detecting human scent
1. A True
2. B False
3. C Only true for certain bird species specifically
4. D Only true if touched for an extended period
💡 Explanation:
This is a myth. Most birds have a poor sense of smell and will not abandon their young due to human touch; however, minimizing handling is still generally recommended.

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Common Scientific Misconceptions MCQs 2026

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