Hardest substance in the human body is?
Correct answer: C. Enamel
- A. Bone
- B. Nail
- C. Enamel
- D. N.O.T
Explanation
Tooth enamel is the body's hardest substance because its mineral content is higher than that of bone or nails. Nails are made mainly of keratin and are much softer.
Written and checked by Zahid Hussain, editorLast updated
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Inventions and Discoveries
Inventions and Discoveries covers the people, dates, principles and practical uses behind developments such as the wheel, printing press, telephone, electricity, radio, computer, internet, vaccines and space technology. It distinguishes an invention, which creates a device or process, from a discovery, which identifies something already present in nature.
Practise Inventions and Discoveries
286 free Inventions and Discoveries MCQs from General Knowledge, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask General Knowledge questions like this
General Knowledge is on 106 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
BCAT General Knowledge25 MCQsAJKPSC General Knowledge20 MCQsAssistant BS-16 Test General Knowledge20 MCQsATS General Knowledge20 MCQsBPSC General Knowledge20 MCQsCTS General Knowledge20 MCQsECP General Knowledge20 MCQsETEA Recruitment Tests General Knowledge20 MCQsFIA General Knowledge20 MCQsFPSC General Knowledge20 MCQsGBPSC General Knowledge20 MCQsIB General Knowledge20 MCQsIntelligence Officer General Knowledge20 MCQsKPPSC General Knowledge20 MCQsMES General Knowledge20 MCQsNAB General Knowledge20 MCQsNAT General Knowledge20 MCQsNational Highways and Motorway Police Test General Knowledge20 MCQsNTS General Knowledge20 MCQsOTS General Knowledge20 MCQsPAF General Knowledge20 MCQsPakistan Army Commissioned Officer Test General Knowledge20 MCQsPakistan Navy Test General Knowledge20 MCQsPakistan Railways Recruitment Test General Knowledge20 MCQsPCS General Knowledge20 MCQsPIA General Knowledge20 MCQsPMA Long Course Test General Knowledge20 MCQsPPSC General Knowledge20 MCQsPTS General Knowledge20 MCQsPunjab Police ASI Test General Knowledge20 MCQsPunjab Police Sub Inspector Test General Knowledge20 MCQsSNGPL General Knowledge20 MCQsSPSC General Knowledge20 MCQsSTS General Knowledge20 MCQsSub Registrar Test General Knowledge20 MCQsTehsildar and Naib Tehsildar Test General Knowledge20 MCQsUTS General Knowledge20 MCQsWAPDA General Knowledge20 MCQsComputer Operator Test General Knowledge15 MCQsCSS General Knowledge15 MCQsDEO General Knowledge15 MCQsFBR General Knowledge15 MCQsHeadmaster and Headmistress Test General Knowledge15 MCQsISSB General Knowledge15 MCQsJunior Clerk Test General Knowledge15 MCQsLAT General Knowledge15 MCQsLecturer Recruitment Test General Knowledge15 MCQsPatwari Test General Knowledge15 MCQsPMD General Knowledge15 MCQsANF General Knowledge10 MCQsASF General Knowledge10 MCQsCSS MPT General Knowledge10 MCQsCTD General Knowledge10 MCQsElite Police Force Test General Knowledge10 MCQsNADRA General Knowledge10 MCQsPAF Airman General Knowledge10 MCQsPakistan Army Soldier Test General Knowledge10 MCQsPakistan Rangers Test General Knowledge10 MCQsPERA Force Test General Knowledge10 MCQsPunjab Police Constable Test General Knowledge10 MCQsRescue 1122 Test General Knowledge10 MCQsAgriculture Officer Test General Knowledge5 MCQsAssistant Director Engineering General Knowledge5 MCQsAssistant Engineer Chemical Test General Knowledge5 MCQsAssistant Engineer Civil Test General Knowledge5 MCQsAssistant Engineer Electrical Test General Knowledge5 MCQsAssistant Engineer Mechanical Test General Knowledge5 MCQsDental Surgeon Test General Knowledge5 MCQsForest Ranger Test General Knowledge5 MCQsGovernment Software Engineer Test General Knowledge5 MCQsHead Nurse General Knowledge5 MCQsLecturer Biology Test General Knowledge5 MCQsLecturer Chemistry Test General Knowledge5 MCQsLecturer Commerce Test General Knowledge5 MCQsLecturer Computer Science Test General Knowledge5 MCQsLecturer Economics Test General Knowledge5 MCQsLecturer Education Test General Knowledge5 MCQsLecturer English Test General Knowledge5 MCQsLecturer International Relations Test General Knowledge5 MCQsLecturer Islamiat Test General Knowledge5 MCQsLecturer Mathematics Test General Knowledge5 MCQsLecturer Pakistan Studies Test General Knowledge5 MCQsLecturer Physical Education Test General Knowledge5 MCQsLecturer Physics Test General Knowledge5 MCQsLecturer Political Science Test General Knowledge5 MCQsLecturer Psychology Test General Knowledge5 MCQsLecturer Sociology Test General Knowledge5 MCQsLecturer Statistics Test General Knowledge5 MCQsLecturer Urdu Test General Knowledge5 MCQsLHV Test General Knowledge5 MCQsMO General Knowledge5 MCQsPost RN BSN General Knowledge5 MCQsStaff Nurse General Knowledge5 MCQsSub Engineer Civil Test General Knowledge5 MCQsSub Engineer Electrical Test General Knowledge5 MCQsSub Engineer Mechanical Test General Knowledge5 MCQsSubject Specialist Biology Test General Knowledge5 MCQsSubject Specialist Chemistry Test General Knowledge5 MCQsSubject Specialist Computer Science Test General Knowledge5 MCQsSubject Specialist English Test General Knowledge5 MCQsSubject Specialist Islamiat Test General Knowledge5 MCQsSubject Specialist Mathematics Test General Knowledge5 MCQsSubject Specialist Physics Test General Knowledge5 MCQsSubject Specialist Urdu Test General Knowledge5 MCQsTehsil Sports Officer General Knowledge5 MCQsVeterinary Officer General Knowledge5 MCQs