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The Lab and Cosmos Knowledge Test

Take “The Lab and Cosmos Knowledge Test,” a focused 20-question trivia challenge with clear outcomes created specifically for this article.

20 questionsMedium8–10 min

Science20 questions · one page

QuizMora Editorial TeamPublished August 11, 2026 · Updated August 11, 2026

Work through 20 mobile-friendly questions created only for The Lab and Cosmos Knowledge Test. Submit once to see the complete outcome without answers or result clues being revealed early.

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20 QuestionsScience Quiz

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Question 1 of 20ScienceWhat do you call a space traveller from Russia or the Soviet Union?

AAeronaut BCosmonaut CAstronaut DTaikonaut

Question 2 of 20ScienceHow many chromosomes does a healthy human body cell contain?

A48 B44 C46 D23

Question 3 of 20ScienceWhat does the chemical formula CO2 stand for?

ACarbon oxide BCarbon monoxide CCarbonic acid DCarbon dioxide

Question 4 of 20ScienceWhat pH value does pure water have?

A14 B7 C0 D5

Question 5 of 20ScienceWhat does dehydration mean?

AA lack of water in the body BA lack of oxygen CElevated blood sugar DAn excess of water in the body

Question 6 of 20ScienceWhat is the name of the default theme that is installed with Windows XP?

ALuna BBliss CWhistler DNeptune

Question 7 of 20ScienceApproximately how many days does it take for the Earth to orbit the Sun once?

A180 days B700 days C30 days D365 days

Question 8 of 20ScienceApproximately what percentage of the total mass of the solar system is accounted for by the Sun?

AAbout 75 percent BAbout 90 percent CAbout 99 percent DAbout 85 percent

Question 9 of 20ScienceWhat is magma called once it erupts from a volcano?

AAsh BLava CPumice DTuff

Question 10 of 20ScienceWhat is the main CPU is the Sega Mega Drive / Sega Genesis?

AIntel 8088 BYamaha YM2612 CZilog Z80 DMotorola 68000

Question 11 of 20ScienceHow many cubic decimeters are equal to one liter?

A1 cubic decimeter B100 cubic decimeters C1000 cubic decimeters D10 cubic decimeters

Question 12 of 20ScienceWhich animal was the first living creature sent into Earth orbit?

AA mouse BFruit flies CThe dog Laika DA chimpanzee

Question 13 of 20ScienceWhat is claustrophobia?

AFear of spiders BFear of heights CFear of flying DFear of confined spaces

Question 14 of 20ScienceWhat kind of light is used in a tanning bed?

AInfrared light BLaser light CUV light (ultraviolet radiation) DX-rays

Question 15 of 20ScienceWhich operating system was released first?

ALinux BMac OS COS/2 DWindows

Question 16 of 20ScienceWhat is removed during an appendectomy?

AThe appendix (vermiform appendix) BThe entire large intestine CThe gallbladder DThe duodenum

Question 17 of 20ScienceWhat shape does sin(x) or cos(x) make on a graph?

AA Parabola BZig-Zags CA Straight Line DWaves

Question 18 of 20ScienceIn the traditional unit used to measure a horse's height at the shoulder, how many inches make up one 'hand'?

A6 inches B4 inches C5 inches D3 inches

Question 19 of 20ScienceOn which date does astronomical spring usually begin in the Northern Hemisphere?

A20 March B21 June C1 March D21 February

Question 20 of 20ScienceWhat is the chemical name for table salt?

ACalcium carbonate (CaCO₃) BSodium bicarbonate (NaHCO₃) CSodium chloride (NaCl) DPotassium chloride (KCl)

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